sci.electronics.repair@googlegroups.com

Google Groups

"dusty" <dusty@dot.com>: Aug 28 11:26AM -0500 32 inch Insignia flat screen TV.   My big feet tripped over the antenna cable, ripping out the input where the cable screws on.   I took off the back hoping it would be a simple solder job, no luck. The little circuit board is broken.   How much trouble would it be to fix?   Appx, how much would it cost to fix?   How long would it take to fix?     I attached a link to some pictures.   https://www.dropbox.com/sh/610z20tqny4wocy/AABqKX-ycqKAAsRqYXoykuVEa?dl=0   Thanks for any information.

hapticz@sbcglobal.net: Aug 28 04:51AM -0700 On Saturday, March 23, 2013 at 10:16:06 AM UTC-4, mike wrote:   > A schematic or pinout info would save me reverse engineering the > thing.   > Thanks, mike   i have pinout of the output plug (no internal schemo), will soon post it.....

pearsoneducator@gmail.com: Aug 27 08:55PM -0700 New test banks and solutions manuals for latest books. Full packages available at a discounted price of of $60. Get Full solution manuals, test banks and PPT's for a text book just for $60. Amazing deal. Will help you prepare for the course with an added advantage. Please contact to buy the packages: allsolutionmanuals11@gmail.com. 2016 Corporations, Partnerships, Estates & Trusts, 29E IRM 2016 Corporations, Partnerships, Estates & Trusts, 29E ISM 2016 Corporations, Partnerships, Estates & Trusts, 29E PPT 2016 Corporations, Partnerships, Estates & Trusts, 29E TB 2016 Individuals, 29 ISM 2016 Individuals, 29E IRM 2016 Individuals, 29E PPT 2016 Individuals, 29E TB Administrative Law Hall 6E IM with Test bank Business Analytics, 2E Evans ISM Business Analytics, 2E Evans Tb Business Communication Essentials, 7E ISM Bovee Business Communication Essentials, 7E TB Bovee Business Communication Polishing Your Professional Presence, 3E Shwom ISM Business Communication Polishing Your Professional Presence, 3E Shwom TB Business Communication Today, 13E ISM Bovee Business Communication Today, 13E TB Bovee Business Law Legal Environment, Online Commerce, Business Ethics, and International Issues,, 9E Cheeseman ISM Business Law Legal Environment, Online Commerce, Business Ethics, and International Issues,, 9E Cheeseman TB College Accounting A Practical Approach, 13E SM Slater College Accounting A Practical Approach, 13E Slater TB Contemporary Business Law, 8E Cheeseman ISM Contemporary Business Law, 8E Cheeseman TB Detecting accounting fraud Analysis and ethics ISM Jackson Environmental Law, 8E Kubasek IM Excellence in Business Communication, 11E ISM Bovee Thill Excellence in Business Communication, 11E Tb Bovee Thill Financial Accounting, 10E Harrison ISM Financial Accounting, 10E test bank Harrison Financial Accounting, 3E Kemp TB Financial Accounting, 3E kemp ISM Forensic Accounting Rufus ISM Forensic Accounting Rufus TB Horngren's Accounting, 11E E Solution manual Horngren's Accounting, 11E Test bank Horngren's Financial & Managerial Accounting, 5E ISM Horngren's Financial & Managerial Accounting, 5E test bank Intermediate accounting Gordon IM Intermediate accounting Gordon ISM Intro to Law 5E Hames IM with Test bank Introduction to Management Accounting, 16E ISM Introduction to Management Accounting, 16E test bank Introduction to Management Science, 12E PPT Taylor Introduction to Management Science, 12E TB Taylor Introduction to Operations and Supply Chain Management, 4E Bozarth ISM Introduction to Operations and Supply Chain Management, 4E Bozarth PPT Introduction to Operations and Supply Chain Management, 4E Bozarth TB Legal Environment of Business Online Commerce, Ethics, and Global Issues, 8E Cheeseman ISM Legal Environment of Business Online Commerce, Ethics, and Global Issues, 8E Cheeseman TB Management Communication, 5E IM ORourke Management Communication, 5E ORourke TB Managerial Accounting Decision Making and Motivating Performance Datar TB Managerial Accounting Decision Making and Motivating Performance ISM Datar Rajan Managerial Accounting, 4E Braun ISM Managerial Accounting, 4E TB Braun Managing Supply Chain and Operations Foster ISM Managing Supply Chain and Operations Foster PPT Managing Supply Chain and Operations Foster TB Personal Finance Turning Money into Wealth, 7E Keown ISM Personal Finance Turning Money into Wealth, 7E Keown PPT Personal Finance Turning Money into Wealth, 7E Keown TB Personal Finance, 5E Madura ISM Personal Finance, 5E Madura PPT Personal Finance, 5E Madura Tb Prentice Hall's Federal Taxation 2016 Comprehensive, 29 E IRM Prentice Hall's Federal Taxation 2016 Comprehensive, 29 E ISM Prentice Hall's Federal Taxation 2016 Comprehensive, 29 E Instructors PPT Prentice Hall's Federal Taxation 2016 Comprehensive, 29 E TB Project Management Achieving Competitive Advantage, 4E Pinto ISM Project Management Achieving Competitive Advantage, 4E Pinto PPT Project Management Achieving Competitive Advantage, 4E Pinto Tb Quality Management for Organizational Excellence Introduction to Total Quality, 8E Goetsch ISM Quality Management for Organizational Excellence Introduction to Total Quality, 8E Goetsch ppt Solutions Manual (Download only) for Taxes & Business Strategy, 5E Scholes.pdf Supply Chain Management Strategy, Planning, and Operation, 6E Chopra ISM Supply Chain Management Strategy, Planning, and Operation, 6E Chopra PPT Supply Chain Management Strategy, Planning, and Operation, 6E Chopra Tb The Legal Environment of Business, 7E Kubasek TB The Legal Environment of Business, 7E Kubasek ISM The Paralegal Professional Goldman IRM 4E Understanding Financial Statements, 11E Fraser ISM Understanding Financial Statements, 11E Fraser Test bank

Jeff Liebermann <jeffl@cruzio.com>: Aug 27 01:29PM -0700 On Wed, 26 Aug 2015 02:50:55 -0400, micky <NONONOmisc07@bigfoot.com> wrote:   >To use one splitter as a combiner, for two antennas, >and the other splitter as a splitter, to feed the signal to a DVDR and >to a digital-to-analog set-top box that feeds a VCR.   You have a possible problem. When you take two antennas and combine them with a splitter/combiner, you run the risk of creating a situation where the two signals cancel. For example, if you have two antennas, and both pickup the same station, with roughly the same signal level, and roughly 180 degrees out of phase, the signals will cancel in the combiner. Worse, you will probably have different group delays (phase shifts) between the two antennas at different frequencies and even on different parts of the 6 MHz wide signal. The result is a "hole" in the frequency respons (gain) of the combined antennas. What that looks like on a TV is a tolerably strong signal, but with a truely rotten picture. With digital TV, it can also be the equivalent of the old "ghosts" problem, where you have two signals arriving at different times, resulting in 2 pictures. However, with digital TV, it just results in a poor quality picture.   Combiner schemes work if: 1. The two antennas can't "see" each other and cover different TV stations. 2. The two antennas are for different frequency bands, such as VHF and UHF. You'll need a diplexer to do that, not a combiner. <https://www.google.com/search?q=vhf+uhf+tv+diplexer&tbm=isch> 3. The two antennas are identical and are pointed in the same direction. That will give you 3dB more gain, but you'll either a phasing harness, or two amplifiers and resistive combiner to make it work.   I suggest you get rid of the two antenna scheme and combiner for now and see if one antenna works better. Also, you can make it work with an RF switch between antennas, which admitttedly isn't convenient.   I'll address the rest later. Customer bearing checkbook just arrived...   -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558

micky <NONONOmisc07@bigfoot.com>: Aug 27 06:01PM -0400 In sci.electronics.repair, on Thu, 27 Aug 2015 13:29:15 -0700, Jeff   >Combiner schemes work if: >1. The two antennas can't "see" each other and cover different TV >stations.   That's the way they are now.   They now each cover one tuner (the DVDR or the set-top-box/vcr), which, via an A-B switch, feed the same set of televisions.   ><https://www.google.com/search?q=vhf+uhf+tv+diplexer&tbm=isch> >3. The two antennas are identical and are pointed in the same >direction. That will give you 3dB more gain, but you'll either a   3db is about 2x as strong? Yes, Wikip says power ratio is about 2, amplitude ratio is about the square root of 2. I asked Solid Signal if splitting the signal to go to the VCR and DVDR would cut the strength in half and he said, No, only 3db. Then he wanted to know where I live so he could give me distance and heading to the stations, and then recommend a second antenna. He didn't pronounce attenuator right, either. Oh, well.   >work.   >I suggest you get rid of the two antenna scheme and combiner for now >and see if one antenna works better. Also, you can make it work with   I have one antenna for each device now.   I see the problem and since I was smart enough to think of the DC voltage problem, I should have thought of what you just said.   Interestingly, the guy at Solid Signal was one who recommended two antennas and he didn't say a word about it either. And he certainly didn't push identical antennas or facing them the same direction.   Thanks for warning me.   >an RF switch between antennas, which admitttedly isn't convenient.   >I'll address the rest later. Customer bearing checkbook just >arrived...   Yes, more important.

"Ralph Mowery" <rmowery28146@earthlink.net>: Aug 27 06:10PM -0400 "micky" <NONONOmisc07@bigfoot.com> wrote in message news:e01vta9d7vrf9obab2eumk34uksr6gf0go@4ax.com... > live so he could give me distance and heading to the stations, and then > recommend a second antenna. He didn't pronounce attenuator right, > either. Oh, well.   Yes, 3 db is 2x larger or smaller depending on the direction of change. It is a log scale so 3 db =2x, 6 db =4x and 10 db=10x.   That is rounding off a tenth or two.   Unless the signals are right on the border point, 3 db or even 6 db won't make much difference. Especially for the digital signals as they are mostly good or bad and not fuzzy like the older analog TV signals.

cf005@FreeNet.Carleton.CA (M.A. Stewart): Aug 27 09:18PM >> > drive car, with a manual transmission... he would have been >> > 'left foot braking' at times! 100% guaranteed!     >> Only if he never mastered heel-and-toe...     Brockie had 'heel-and-toe' mastered when he was a nine-year old. The first front-wheel drive car he drove FAST, he had 'left foot braking' mastered in about nine minutes. Hell, when he got out the car he was probably speaking fluent Finnish, without a trace of an Oz accent.       -- "Brockie's my hero" The Holden hoons credo.

Tony Hwang <dragon40@shaw.ca>: Aug 27 11:20AM -0600 Jeff Liebermann wrote: > attack. I use my address.   > <http://www.renderlab.net/projects/WPA-tables/> > <https://wigle.net/stats#ssidstats>   Regardless, it is crackable if one intends to. I don't even bother hiding my SSID. Nothing important in my home network. My lawyer, bank, accountant keeping important stuffs.

Jeff Liebermann <jeffl@cruzio.com>: Aug 27 10:56AM -0700 On Thu, 27 Aug 2015 11:20:05 -0600, Tony Hwang <dragon40@shaw.ca> wrote:   >I don't even bother hiding my SSID. Nothing >important in my home network. My lawyer, bank, >accountant keeping important stuffs.   This is one reason why I hate security discussions. If you really think there's nothing important on your home computah, then I suggest you test this. Install a program that does a recursive text search on all your files. For Windoze, I use Agent Ransack: <https://www.mythicsoft.com/agentransack> Plug in your social security number, checking account numbers, and credit card numbers, and see what it finds. The idea is to obtain enough info to perform an identity theft. I was rather surprised to find both on my machine. While WPA2 cracking is usually just to gain access to a faster or more convenient internet connection, it's not beneath the dignity of most casual hackers to make some money on the side.     -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558

Sam E <why.should.this@be.email.invalid>: Aug 27 01:24PM -0500 On 08/26/2015 06:31 PM, Tony Hwang wrote:   > Fancy SSID has no impact on security.   It could affect how attractive your network is to a potential intruder.   So, indirectly, it is affecting security since it makes the difference on whether or not someone tries to get in.   -- "I am attempting to construct a mnemonic memory circuit using stone knives and bearskins."

Sam E <why.should.this@be.email.invalid>: Aug 27 01:26PM -0500 On 08/27/2015 12:29 AM, Jeff Liebermann wrote: > attack. I use my address.   > <http://www.renderlab.net/projects/WPA-tables/> > <https://wigle.net/stats#ssidstats>   Don't name your WiFi network "monkey".   -- "I am attempting to construct a mnemonic memory circuit using stone knives and bearskins."

Jeff Liebermann <jeffl@cruzio.com>: Aug 27 01:14PM -0700 On Thu, 27 Aug 2015 13:26:40 -0500, Sam E   >Don't name your WiFi network "monkey".   The SSID can be 1 to 32 characters. One of my customers set his SSID to "*". I forgot exactly what it broke, but I do recall spending a week failing to fix what I thought were unrelated problem. When I changed the SSID to something reasonable, all the weirdness went away. This was quite a while ago so presumably it's now fixed.   Another fun SSID is "ANY". I don't recall what it was suppose to do, but it was thrown into some long forgotten manufacturers firmware to allow any device to connect, probably for repeaters and range extenders. Try it and see what breaks.   Also try "Free Public WiFi" which is really a Microsoft XP bug. <http://www.npr.org/2010/10/09/130451369/the-zombie-network-beware-free-public-wifi>     -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558

You received this digest because you're subscribed to updates for this group. You can change your settings on the group membership page. To unsubscribe from this group and stop receiving emails from it send an email to sci.electronics.repair+unsubscribe@googlegroups.com.

sci.electronics.repair@googlegroups.com

Google Groups

ceg <curt.guldenschuh@gmail.com>: Aug 26 05:28PM On Wed, 26 Aug 2015 07:08:58 -0700, Jeff Liebermann wrote:   > They don't. The HOME-XXXX format, where XXXX might be the last 4 digits > of the MAC address, is the default SSID for Comcast "gateway" > style wireless routers.   Ah. That makes a *lot* of sense (I hate when that happens!). :)   This is a "comcast neighborhood", where all the college kids live. We can assume most of them weren't born with a router next to the silver spoon in the cradle, so, they probably got their modem/router combo's from Comcast. And Comcast probably defaulted on the naming conventions.   That makes too much sense! Thanks for 'splaining.

ceg <curt.guldenschuh@gmail.com>: Aug 26 05:32PM On Wed, 26 Aug 2015 10:29:39 -0500, Mark Lloyd wrote:   > I used to see a lot of "Linksys" SSIDs without wireless security. Once I > considered connecting and changing it to something like "I'm so > insecure!" or "I need my WPA!",   Because of butterfly tables, you want your ESSID to be unique, I think.   The details are beyond me (I think Jeff Liebermann turned me on to this concept), but the net is that you don't want your ESSID to be something that is in the hash tables of 30 million other ESSIDs.

Tony Hwang <dragon40@shaw.ca>: Aug 26 05:31PM -0600 Jeff Liebermann wrote: > <https://wigle.net/stats#mainstats> > 3.74% of about 210 million wireless networks use the default SSID. I > guess this is proof that most computer users have no imagination.   Fancy SSID has no impact on security.

ceg <curt.guldenschuh@gmail.com>: Aug 27 12:30AM On Wed, 26 Aug 2015 17:31:20 -0600, Tony Hwang wrote:   > Fancy SSID has no impact on security.   Butterfly hash tables?

Jeff Liebermann <jeffl@cruzio.com>: Aug 26 10:29PM -0700 On Wed, 26 Aug 2015 17:31:20 -0600, Tony Hwang <dragon40@shaw.ca> wrote:   >Fancy SSID has no impact on security.   Wrong. The SSID is used as a "salt" to do WPA/WPA2 encryption. The rainbow tables are only useful if the SSID of the system that you're attacking is the same as one of the SSID's in the rainbow table. Using a common SSID listed on Wigle improves the probability of a successful attack. I use my address.   <http://www.renderlab.net/projects/WPA-tables/> <https://wigle.net/stats#ssidstats>     -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558

Trevor Wilson <trevor@SPAMBLOCKrageaudio.com.au>: Aug 27 06:46AM +1000 On 23/08/2015 10:37 PM, Stormin Mormon wrote:   >>> Such is the cellphone paradox.   > Does braking with the left foot increase the > risk of accidents?   **The left foot is for the clutch.   Sheesh!       -- Trevor Wilson www.rageaudio.com.au   --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

MJC <gravity@mjcoon.plus.com>: Aug 26 10:15PM +0100 In article <d46mvfF43kpU1@mid.individual.net>, trevor@SPAMBLOCKrageaudio.com.au says...   > **The left foot is for the clutch.   > Sheesh!   Darwinism?   Mike.

cf005@FreeNet.Carleton.CA (M.A. Stewart): Aug 26 09:50PM > --- > This email has been checked for viruses by Avast antivirus software. > https://www.avast.com/antivirus   If 'Brockie' was driving FAST at Bathurst, in a front wheel drive car, with a manual transmission... he would have been 'left foot braking' at times! 100% guaranteed!     -- "Brockie's my hero" The Holden hoons credo.

avagadro7@gmail.com: Aug 26 06:29PM -0700 he parked his car.   nnnnnn   obviously not true....significant cultural shifts in perception, buying, activities...revolutionary.   look again.

rbowman <bowman@erewhon.com>: Aug 26 10:49PM -0600 On 08/26/2015 03:50 PM, M.A. Stewart wrote: > If 'Brockie' was driving FAST at Bathurst, in a front wheel > drive car, with a manual transmission... he would have been > 'left foot braking' at times! 100% guaranteed!   Only if he never mastered heel-and-toe...

avagadro7@gmail.com: Aug 26 06:30PM -0700 > bbb bbbbbb bbbzzzzzzzzzzzzzzzzzzzzick   with 11 views including Cress ? we assume THERE'S A LOTTA DEAF FORD OWNERS HERE....

"Rheilly Phoull" <rheilly@bigslong.com>: Aug 27 11:29AM +0800 wrote in message news:3e4b3d6b-b13c-40ff-a2e8-8ca5f33baad7@googlegroups.com...   Suggestions on wiring add on buzzers for example into the flasher circuit ?   Don't know much about yank cars but I'd start off with a couple of diodes from each side lamp circuit going into the piezo (assuming it is a self powered unit).   left----0------------ gnd |--->--- 0 piezo |--->-- right--0------------ gnd

You received this digest because you're subscribed to updates for this group. You can change your settings on the group membership page. To unsubscribe from this group and stop receiving emails from it send an email to sci.electronics.repair+unsubscribe@googlegroups.com.

sci.electronics.repair@googlegroups.com

Google Groups

Jeff Liebermann <jeffl@cruzio.com>: Aug 26 07:08AM -0700 On Tue, 25 Aug 2015 22:06:49 +0000 (UTC), ceg >> It got misdirected from a disco gobo.   >BTW, why do so many people use HOME as the prefix to their >SSID's?   They don't. The HOME-XXXX format, where XXXX might be the last 4 digits of the MAC address, is the default SSID for Comcast "gateway" style wireless routers. I'm not sure when this started, but my guess(tm) is about 2 years ago.   Anything is better than linksys, dlink, default, hpsetup, and default. <https://wigle.net/stats#mainstats> 3.74% of about 210 million wireless networks use the default SSID. I guess this is proof that most computer users have no imagination.       -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558

Mark Lloyd <not@mail.invalid>: Aug 26 10:25AM -0500 On 08/25/2015 05:06 PM, ceg wrote: >> It got misdirected from a disco gobo.   > BTW, why do so many people use HOME as the prefix to their > SSID's?   I have been in a nearby city, where there are a lot of college students. I don't see "home" but I do often see ISP names or router brand names. It looks like an attempt by sellers to provide unique SSIDs, and users who don't change the defaults.   Where I live, I don't see prefixes like that, but I do see some interesting names like "FBI Surveillance" and "ThisIsNoyTheWiFiYou'reLookingFor".     -- Mark Lloyd http://notstupid.us/   "HUMANISM: an exaltation of freedom, but one limited by our need to exercise it as an integral part of nature and society." [John Ralston Saul]

Mark Lloyd <not@mail.invalid>: Aug 26 10:29AM -0500 On 08/26/2015 09:08 AM, Jeff Liebermann wrote:   [snip]   > <https://wigle.net/stats#mainstats> > 3.74% of about 210 million wireless networks use the default SSID. I > guess this is proof that most computer users have no imagination.   I used to see a lot of "Linksys" SSIDs without wireless security. Once I considered connecting and changing it to something like "I'm so insecure!" or "I need my WPA!",   -- Mark Lloyd http://notstupid.us/   "HUMANISM: an exaltation of freedom, but one limited by our need to exercise it as an integral part of nature and society." [John Ralston Saul]

N_Cook <diverse@tcp.co.uk>: Aug 26 03:39PM +0100 Ignore the studding, it did not look right. 1x1 inch L section blacked aluminium, ends cut down to lodge into the cab edges, 1 CSK woodscrew each end

G. Morgan <sealteam6@osama-is-dead.net>: Aug 26 06:07AM -0500 ceg wrote:   >but "ACCIDENTS"), please post them since the accidents don't seem to exist >but, if cellphone distracted driving is hazardous (which I would think it >is), then they must be there, somewhere, hidden in the data.     There is probably no check box on the form for cops to check "distracted cell phone user" on the report. As if the cop would know the cause anyway...   As long as you're agreeing that phones & text don't mix, that's one less driver I have to worry about :-)     --   They who can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety. - Ben Franklin

G. Morgan <sealteam6@osama-is-dead.net>: Aug 26 06:16AM -0500 ceg wrote:     >So, we really have two extremely reliable components of the paradox. >a. Cellphone ownership has been going explosively up in the USA, >b. All the while *accidents* have been going down.     There are dozens of other factors contributing to the decrease in "accidents" (I call them collisions because 'accident' implies nothing could have prevented the collision).   Better roads, smarter cars that brake automatically, awareness of the danger lead to conditioning people beinf boy "as" st - plus the high fines associaed with talking in an active school zone, --   They who can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety. - Ben Franklin

jurb6006@gmail.com: Aug 25 11:58PM -0700 >"attempts to start, surges repeatedly, but cannot successfully run..."   Plus they can do that all by themselves. Many have a low current mode, basically a "wait to start" that allows a 50K resistor or whatever to bleed up a cap big enough to run the main chopper enough to start and then a rectifier coming off a, well tertiary primary ? Works. the it feeds the driver chip. When that filter gets ESR or low capacitance, then this happens even at rated line voltage.   However this does not always cause a catastrophic failure. Some units can sit there for weeks and still only need that one cap. And others could be alive one day and dead the same day. It all depends on what is critical and what is not.

jurb6006@gmail.com: Aug 26 12:21AM -0700 >"** The parallel 0.47ohm resistors are there for the VI limiter circuit ( not >drawn) saving the V-FETs from destruction if driven into a low impedance or >short. "   I saw the real schematic, I have it. Yes it is a doosey (sp) Runs you all over the place but oh well, I still got the jist of it. The VI limiter circuit as you call it, which I would simply call a current limiter (with an enhancement to allow said current at higher output voltages)should be able to handle this. Usually it is basically called a dual slope detector, but what Sony likes to do apparently is to get ten nerd who actually did solve not only that rsistor cube, but that other thing going around on the net.   Why do you want to get every last iota of power or whatever of whatever you use ? Well basically because you got shareholders. Every old thing we own is their mistake.   I used to be almost Mr Sony but did not want their speakers and most of their amps I could afford. I worked for a Sony Signature dealer and ASC, I also worked for another Sony ASC a bit later. Well actually at the same time which they didn't want me to do but so what.   but I was always with it for their video equipment, but I did not like the Access systems, I thought they were junk. And then it seems they got skitzoid, like almost being two companies. Alot of them got like that, they got the cheap line and they got the good line. Let's run that credit card and see what you want. I shit you not.   Where were we. (damn that was easy to type)   Anyway, thusfar we have been dealing with a certain paradigm. Now here is something, and it is not even solid state. Tube/valve circuits that use those regulator tubes. the gas fired ones like 0A2 or some shit, I don't remember. It is lucky there are not alot of these around I think, with all the variacs and DBTs out there, I really think that some of those circuits might be damaged bringing up the voltage slowly.   This would happen if say the main rectifier tube took a certain time to warm up and did not give the 0A2 enough voltage fast enough to catch the regulator tube and blew an electrolytic somewhere. Or possibly cause an arc in a totally innocent ECC83 somewhere.

jurb6006@gmail.com: Aug 26 01:24AM -0700 >" >Using a variac, it is sometimes possible to find a setting where the PSU >attempts to start, surges repeatedly, but cannot successfully run - likely >because the secondary voltage does not rise enough for the control loop to >stabilise."   Not to forget the days of the earlier bipolar ones that needed real drive current of the FET ones that needed real drive voltage. (like that bastard Sony)But actually I mean regular MOSFETs. I they didn't get a certain voltage drive they would run away, literally.   >"Reckon it is wise to avoid lingering at such a setting. "   For what reason would one linger at a setting ? I can understand under certain conditions doing advanced Tshooting, but just firing up old stuff is different and they have NO reason to linger at any setting. If the current goes up too much you shut the motherfucker down now. If it is worth using a variac on it is worth using it right. Godammit.   But really you meant what I said, or some shit. That current climbs abnormally you shut down and try to figure it out. If nothing else start disconnecting shit.   And actually the DBT is a pretty good current meter.   What I want is some incandescent light bulbs from the UK or whatever, and of course sockets to match, because they are 240 volts. sometimes I needed to discharge a cap that I KNEW was at like 300 volts, and I do not mean on tubes, I mean on like a plasma TV. Using a 120 volt bulb is not all that cool, it could fail leaving you with an insidious problem.   I have considered two in series but if I ever want to change the wattage that makes a mess, and I do not want any switches.   I will do it in digital. Almost. Banks of bulbs, all controllable by unscrewing the lead bulb in any series. And there are a few series' which make an array.   Are you with me here ? This is going to look better than a Gene Wilder movie.

N_Cook <diverse@tcp.co.uk>: Aug 26 08:53AM +0100 > The smaller is a 1/4-27 thread. Not 1/4 pipe but .250" O.D. and is not > very common. > Eric the machinist   I happen to have a few bags of F cons laying around. These dustcaps look the bees knees, blue sleeving and blue dome over the caps. I could have used some fine ball chain , as some of that laying around, but in an audio-vibrational environment it could rattle, methought.

micky <NONONOmisc07@bigfoot.com>: Aug 26 02:50AM -0400 In sci.electronics.repair, on Tue, 25 Aug 2015 17:06:24 -0700, Jeff >the receiver(s) and the antenna(s), perhaps it might be better if you >disclosed what problem you are trying to solve. That would narrow >down the possible devices to only a few.   Yes, of course. To use one splitter as a combiner, for two antennas, and the other splitter as a splitter, to feet the signal to a DVDR and to a digital-to-analog set-top box that feeds a VCR.   Currently, they use separate antennas. The DVDR uses an outdoor style antenna in the attic** (pointed towards Washington DC) and a antenna amp The amp makes some of the DC stations come in fine all of the time, and the rest some**** of the time, but seems to have overloaded some of the Baltimore stations some of the time^^. The tech support guy at SolidSignal.com said that weak signal and overload can look alike on the screen. So I got a coaxial attenuator (before I talked to him but he suggested it too) and it works to bring back the local stations but at the same time costs me some of the DC stations. I had hoped there would be a sweet spot where all of the stations worked all the time.   And the VCR set-top-box is connected at different times either to a simple 8-foot wire that doesn't leave the bedroom, or an inexpensive flat 1-foot square no-metal-parts-showing-except-the-coax-connector, amplified antenna. The Zenith set-top box actually has a better tuner than does the Philips^^^ DigitalVDR and before I got the much bigger antenna in the attic the set-top-box got more channels than the DVDR did***. By giving it part of the large antenna's signal, who knows what channels I might get? and at the same time it will weaken the signal a little and maybe stop some of the overload at the DVDR.   I think both amplified antennas have power injected in their respective co-ax, but I can do that above the splitters, so the splitters shouldn't have to carry any power, but it's a good thing I asked here, because it occurs to me for the first time that if the splitter/combiner does carry power to both ports, some of that power will go downstream from one power injector to the splitter/combiner, and back up to the other signal injector where it willl fight with the power there.   If the polarity is the same and the voltage is the same, will this be a problem? Just because two different injectors both say negative is in the ring and postiive the center of the plug, does that really mean the center wire gets the positive in each case, and even if it does, does it really mean the voltages match? The two signal injectors could output two DC voltages that are the opposite of each other, I think. ??? So should I just make sure I have either a non- or one-port- power-passing splitter?       Footnotes are progresssively more tangential or off-topic.   ^^the overloaded stations would not be a problem except when I'm not home and I record them, then come home and find that the recording is blank or checkerboarded with no sound.   **Outside antenna is not possible and imo not needed. The SolidSignal guy kept pushing an outside antenna even when I said I wouldn't do it. (I bought the antenna and the amplifier from them.)   ****Even in the best weather, I can't get every DC station, but I can get all the major and some of the minor ones.   ***But I don't have the right remote for the VCR so I can't change the recording speed to a practical one. So I don't record with it. When all this other stuff is settled, I have another VCR someone gave me that might be useful for recordign (The Zenith set-top box actually has timed recording ability, including turning on and tuning at a certain time to a pre-chosen channel. It was $40 above the government coupon price, that is, it would have cost $80.)   ^^^The Philips is not sold new anymore but is pretty much the same as a Magnavoxx DVDR still sold afaik. It has lots of design flaws (the biggest that the clock doesn't keep good time and even setting it on automatic doesn't mean it will ever have the right time. Putting it on OFFmeans it will lose (or is it gain?) several seconds every day. (A friend has a Magnavox and it's no better!) I have to start recording a minute before the hour and finish a minute after, but this doesn't work if I want to record two shows in a row on different channels.) But reading the manual again just now, I realize I forgot the 3rd choice, manual, where I tell it what the PBS channel is if it doesn't pick it correctly itself. So maybe it will work better once I do that. I tink I bought this 7 years ago before digital conversion was mandatory and used it on analog for a couple years.   It also won't display program information when it's recording, and it doesn't save any program information except channel, time, and recording length, not program name and certainly not program description. I often have to start playing it to figure out what it is. But there are only 2 or 3 over-the-air DVDRs sold, and it does the other basic stuff well. (Plus it has editing and dubbing powers I will never use. )

micky <NONONOmisc07@bigfoot.com>: Aug 26 02:55AM -0400 In sci.electronics.repair, on Tue, 25 Aug 2015 16:49:42 -0700, > at DC. Many rooftop TV antennas are of this sort, either due to > the antenna itself (folded-dipole driven element) or due to the use > of a 75-/300-ohm balun transformer.   Ah, of course. I'm surprised I lasted this long without coming across this before, or noticing it on my own. Now I have to review the last 30 years and decide if not knowing this has caused me any problems. Off-hand, I don't think so, but I've learned it takes days or longer to retrieve things out of the corners of my mind.

You received this digest because you're subscribed to updates for this group. You can change your settings on the group membership page. To unsubscribe from this group and stop receiving emails from it send an email to sci.electronics.repair+unsubscribe@googlegroups.com.