| sci.electronics.repair@googlegroups.com | Google Groups |  |
| Unsure why you received this message? You previously subscribed to digests from this group, but we haven't been sending them for a while. We fixed that, but if you don't want to get these messages, send an email to sci.electronics.repair+unsubscribe@googlegroups.com. |
- Anyway to fix the push button switches in my Panasonic phones? - 1 Update
- Islam prohibited women to be Unveiled....why? - 4 Updates
- OT: GPS altitude question - 2 Updates
- Update on the Fender ... - 6 Updates
- Fused Motherboard 4 pin power connector? - 2 Updates
- U.S. Using Fake Cell Towers On Planes To Gather Cell Phone Data - 2 Updates
- cmsg cancel <db01e4f5-ff77-4894-b252-ee27a43b0b72@googlegroups.com> - 1 Update
- Libby, Audrey, Hannah & Jennifer Decker SUCKING Judge James J. Lombardi's COCK - 1 Update
- Eminence speaker issue - 1 Update
- Casio FX 451 calculator from 30 years ago - 1 Update
| RobertMacy <robert.a.macy@gmail.com>: Nov 18 09:14AM -0700 Have quite a few landline Panasonic Easa-Phones, Model KX-T2315 REALLY like these units and want to keep. The pushbotton switches have become unreliable, often yielding two numbers and sometimes not even registering! The worst offenders are the telephones that haven't been used for a while. Any way to fix? I've tried contact cleaner injected in but that hasn't taken. Could be the type of cleaner, or the method of doing, or there simply is no more 'contact' left in the switches. But since using over and over seems to almost repair, suspect should be able to do something. help! |
| John Robertson <spam@flippers.com>: Nov 17 09:07AM -0800 > Another study held from 1973 to 2004 found that the rate of new melanoma cases in younger women had jumped 50 percent since 1980, but did not increase for younger men in that period. > "It's worrying," said Mark Purdue, a research fellow at the National Cancer Institute, who led the analysis published in the Journal of Investigative Dermatology. "What we are seeing in young adults right now could foretell a much larger number of melanoma cases in older women." he said. > "One possible explanation is increases among young women of recreational sun exposure or tanning bed use," Purdue said. "Both of these things have been identified as risk factors." So, let me get this straight, women need to be veiled to protect them from the sun? If so then men should be under a similar restriction as the incidence of skin cancer for men is twice that of women after the age of 60 (and equal to women from 45 to 59). http://www.cancer.org/research/cancerfactsstatistics/cancerfactsfigures2014/index Therefore, to protect men they too should be required to wear the hijab when outside and protect their face and palm of their hands from exposure to the sun. Otherwise it is hypocritical to say that women must protect themselves from the sun, but not insist on the same dress style for men - isn't it? Mind you the risk of dying of melanoma is almost twice as high if you are male than if you are female, so the women should really be encouraging we males to done the hijab! Hmm, breast cancer - almost 8 times the risk compared to melanoma for women. What should we do about that? Ohhh, prostate cancer - same risk to men as breast cancer is to women. And that is another problem, can you help with that? Time to move into the 21st century. ... > * http://www.boston.com/news/nation/washington/articles/2008/07/11/skin_cancer_on_rise_in_young_women/ > * http://www.medicalnewstoday.com/articles/44764.php > Thank you You are most welcome, John :-#)# |
| jurb6006@gmail.com: Nov 17 10:59AM -0800 It's actually because the males rape the Women. That's why it's practically legal. |
| "William Sommerwerck" <grizzledgeezer@comcast.net>: Nov 17 11:25AM -0800 The veiling of women is a form of misogyny. Women are seen as tempters (Eve got Adam to eat the apple), and they must be covered up to keep them from arousing male lust. |
| RobertMacy <robert.a.macy@gmail.com>: Nov 18 07:30AM -0700 On Mon, 17 Nov 2014 12:25:11 -0700, William Sommerwerck > The veiling of women is a form of misogyny. Women are seen as tempters > (Eve got Adam to eat the apple), and they must be covered up to keep > them from arousing male lust. From Judeo-Christian Scripture it is my understanding that 'covering' the head was to thwart fallen angels, who found women fair, from being attracted to them, and even both sexes. Then with Christ, He became our 'cover'. Sincerely ask in His name that evil to be gone and evil is gone. No physical outward sign is required. So with questionable text, dictated by someone posing as Gabriel, leaves two observations: 1. The innocents [women] must do all kinds of worldly, not spiritual activity, to avoid/prevent evil. Also in some way making women responsible for actions of others. Huh?! 2. The rules themselves imply an origin of such text. After all. WHO else would better know the effect of such 'physical' rules than the evil one himself? 72 virgins, indeed! Carnal reward, not spiritual reward. And exactly what rewards do women get? A little discernment, a look at the fruits, and the origin of all that text becomes evident. Interesting note: Even in old scripture God points out to Israel how impressed he was that people, He said were not even His, tenaciously followed rules, no unclean food, no alcohol, no tobacco etc. chiding Israel for not even following the simplest of rules He had set out for His people. Therefore, He said He would always provide those other people with strong leaders. |
| N_Cook <diverse@tcp.co.uk>: Nov 18 10:40AM Anyone know of a site like heavensabove for astronomical predictions including Iridium flares. So you input a latitude and longitude and the application returns a date and time when 3 or more GPS satellites are within (selectable) say 30, degrees of the zenith. Wish to determine the height of a patch of ground . It is away from roads, so daftlogic.com etc and old OS maps (before they got precious with their data) and proper spot heights, is no use. |
| Pat <pat@nospam.us>: Nov 18 06:52AM -0500 >degrees of the zenith. Wish to determine the height of a patch of ground >. It is away from roads, so daftlogic.com etc and old OS maps (before >they got precious with their data) and proper spot heights, is no use. Google Earth? |
| "Gareth Magennis" <gareth.magennis@ntlworld.com>: Nov 17 11:29PM Anyways, put it in and fired it up. It does a lot of LED flashing and bias trimming between the 4 tubes, but seems to eventually settle on a 'solution'. Out of the four (brand-new looking) Sovtek output tubes, three ended up with almost -ve 51 volts on their grids, and the other with just under -ve 52 volts. For all of this effort though, I'm not sure that there would have been any practical difference if all four tubes were to have had the same bias on them. I don't know if these Sovteks were bought as a matched quad - we didn't fit them - but clearly they aren't, quite. I don't know how much 'slack' this board is able to take up, but I would imagine quite a bit. But the thing that's vexing me a bit now, is whether to recommend that the owner replaces all four tubes now for a properly matched quad. There's no signs of any flashovers or other nasties going on, but I still have that niggling doubt that something might have twatted that board, and that one of the outputs clearly doesn't quite match the other three. Thing is, it's already going to have cost them a bit in bench time, even if we let the board go in for no cost, and to then add a set of output valves that it looks like have already been replaced not long ago ... :-\ Arfa Why would you need a properly matched quad in an amp that measures each tube's bias point and matches it to the rest? Surely that's just like having 4 separate bias pots onboard, something very few amps have. If one tube is down, swap its position and see if the amp compensates accordingly. So either tube or amp problem. Plus the bias current is actually measured and set per tube in the amp, at the voltages that the tubes are actually running at. Not some arbitrary set of parameters remotely measured in a tube tester that the tube supplier claims to have carried out to "match" them. Gareth. |
| "Arfa Daily" <arfa.daily@ntlworld.com>: Nov 18 01:57AM "Gareth Magennis" <gareth.magennis@ntlworld.com> wrote in message news:Kxvaw.742333$3F6.102798@fx02.am4... > Not some arbitrary set of parameters remotely measured in a tube tester > that the tube supplier claims to have carried out to "match" them. > Gareth. I hear what you are saying Gareth, and I take your point, but you are missing the point that I am making. What is concerning me is that the original board has failed. I cannot know whether this is a 'chance' failure, or whether it's been knocked out by - for instance - an intermittent internal short on one of the valves, bearing in mind that it is connected directly to all four grids and all four cathodes. The fact that one of the valves clearly has rather different characteristics from the other three, just rang slight alarm bells in this regard, particularly as the valves all look almost new, so were *probably* fitted as a matched quad, although again, I cannot actually know this, as we didn't fit them. You of course make a valid point that the whole purpose of this automatic bias / balance board is so that it can match anything from 2 x 6L6 + 2 x EL34, to a set of four 19 set PA valves, and it is of course doing its job here in correcting for the odd man out - if that is in fact *all* that it is ... Arfa |
| dplatt@coop.radagast.org (David Platt): Nov 17 06:24PM -0800 In article <iIxaw.793388$Au1.484529@fx36.am4>, >EL34, to a set of four 19 set PA valves, and it is of course doing its job >here in correcting for the odd man out - if that is in fact *all* that it is >... As far as checking the Fender itself for hidden damage - I think the "swap the tubes around and track the bias changes" idea is a good one. With three rotations, you could test each tube in each socket position. See if the bias for each individual tube "follows" the tube pretty exactly, or if one or more sockets have a (forgive me) biased bias. This would give you some idea as to whether anything in one of the board sections was "cooked" by a tube failure (maybe a resistor overheated and has drifted?) As to the tubes themselves... best you can do is report your findings to the owner, make your best recommendation, and ask whether the owner wants you to install a fresh set that you've personally matched. What does a good transconductance tester tell you about the tubes? |
| N_Cook <diverse@tcp.co.uk>: Nov 18 07:48AM On 17/11/2014 11:16, Arfa Daily wrote: > of output valves that it looks like have already been replaced not long > ago ... :-\ > Arfa Useless bloody thunderbird, I remember reading the original of this story but cannot now find it or could you at least repeat the model number. What was the failure in the board, could you tell whether over-current or over-voltage, any deliberate track thinnings for tell-tales. |
| "Gareth Magennis" <sound.service@btconnect.com>: Nov 18 09:59AM "Arfa Daily" <arfa.daily@ntlworld.com> wrote in message news:iIxaw.793388$Au1.484529@fx36.am4... > here in correcting for the odd man out - if that is in fact *all* that it > is ... > Arfa Ah, sorry I did miss the point. I would tend to assume that these were not a matched quad, as people who match and sell valves generally like to make this known by marking the valves with either a sticker or sharpie on the glass. Although its more difficult with EL84's because they don't have a nice base for the sticker and the glass is small to mark well in this manner. I buy my valves 50 at a time direct from JJ Tesla in Slovakia. I've built a tester with variable regulated HT and constant current sources to match the valves at a known voltage and current point. A quick check of the EL84 box shows about a 10% variation between lowest and highest. It looks like the readings are probably within a Gaussian distribution, or whatever the correct Statistical term is involved here, i.e. the majority are clumped in the middle with increasingly fewer being lower or higher than the mid point. Your readings seem to indicate around a 2% difference between the "bad one" and the others. I'd say this might be pretty typical of a non matched set? But who really knows, as you are saying! Cheers, Gareth. |
| Phil Allison <pallison49@gmail.com>: Nov 18 03:18AM -0800 Arfa Daily wrote: > So, the nonsense bias board arrived. ** The "nonsense" is all coming from you - fuckhead. > would have been any practical difference if all four tubes were to have had > the same bias on them. I don't know if these Sovteks were bought as a > matched quad - we didn't fit them - but clearly they aren't, quite. ** One valve, 1 volt out is about as near to matched as any 4 output valves I have ever seen or ever need to be. Jesus Christ you are a neurotic fuck. > I don't > know how much 'slack' this board is able to take up, but I would imagine > quite a bit. ** The 4 bias currents are IDENTICAL !! You stupid twat. > owner replaces all four tubes now for a properly matched quad. ** FFS - there is nothing improper about the set you have. There's no > signs of any flashovers or other nasties going on, but I still have that > niggling doubt that something might have twatted that board, ** Fender have already told you the boards fail all on their own. > and that one of > the outputs clearly doesn't quite match the other three. ** Twaddle. > already going to have cost them a bit in bench time, even if we let the > board go in for no cost, and to then add a set of output valves that it > looks like have already been replaced not long ago ... :-\ ** If it ain't broke, don't fix it. Only crooks do that. ... Phil |
| "Bob F" <bobnospam@gmail.com>: Nov 17 07:52PM -0800 I have a motherboard I acquired cheaply, but which does not even post on poower on. This was in a case, and had the 4 pin power connector plugged in 90 degrees wrong so that the pairs of 12V and GND connections would each receive one 12V and one GND supplied from the power supply. I suspect, that the internal board connections to this connector could have fused. What I'm wondering, is if there would be any possibility of determining if this is so, and if it can be repaired. If I turn on the board with the large power supply connector installed, and the 4 pin connector disconnected, I see no significant voltage on either 12V lead of the motherboard 4 pin connector, so voltage is not getting through to the 4 pin connections from the main power connector. The board is an Asus M4A87TD EVO Any ideas about how to test my hypothesis, or perform repairs? |
| Paul <nospam@needed.com>: Nov 18 12:44AM -0500 Bob F wrote: > connections from the main power connector. > The board is an Asus M4A87TD EVO > Any ideas about how to test my hypothesis, or perform repairs? ATX12V 12V 12A max 1V ~100A Yellow ---+------------------------ Vcore ------------ CPU_Core Yellow ---+ | Black ------+ | Black ------+------------------------+--------------- GND 12V 12A max 12V yellow ---+------------+---+------+----------------+ 12V yellow ---+ | | | | (24 pin main) fan fan PCI Express PCI Express <-- ~2A load, video, high end | | Slot Power Slot Power <-- 4.2A load (6600 card) | | | | <-- (non-video card, much less) GNDS (multi) ---------------+---+------+----------------+ (The connector current rating varies with wire gauge a little bit. The ATX12V could handle a bit more current than shown in the diagram, as the pins have "fewer neighbors", which helps with heat. The above rating on ATX12V is intended to be conservative. I'm not going to argue if someone digs up the Mini-Fit Jr datasheet and corrects the above numbers.) In that diagram, as far as ohmmeter readings on the motherboard itself are concerned, there should be no DC path from the yellow pair on ATX12V, versus the yellow pair on the main connector. If you leave the ATX supply connected to the motherboard, on the ATX side the rails could be shared. But with the ATX supply completely disconnected from the motherboard, there should be no path from ATX12V to 12V1 pair on the main 24 pin connector. Exception to the rule, is on Biostar-branded motherboards. For some obscure reason, users have been finding the two 12V distributions connected together by Biostar. Users have reported connecting just the main ATX connector, and the processor runs and system comes up. This is not particularly good for the main connector, depending on total electrical load. Biostar was also doing this in the AGP era. It's hard to tell whether they're still doing it, unless a poster volunteers the information. Biostar doesn't admit to the practice, in the user manual. The Mini-Fit Jr connector family is keyed by the shape of the connector plastic. And that's intended to warn the user about the orientation. The ATX12V also has matching latch elements on both connector bodies, as a "hint" as to orientation of the two bits. While a person can override the orientation with enough pounding, usually a person would notice something was wrong, before forcing it into place. The connector might not even want to stay there, as the latch cannot engage if the connector is installed in any (non-preferred) orientation. So is something blown ? Yeah, could be. Especially if the rotation is 180 degrees, and the 12V is applied reversed. If 12V was shorted to GND, maybe that triggered the OC protection on the ATX supply. If a monster supply was used (like 12V 60A single output), maybe something nasty could happen. But I would have expected the ATX wire harness plastic to start to melt if that happened. While individual outputs are supposed to have current limiter implementations (20 amp limit on some wire sets), we can't always be sure what is there, because the manufacturer usually does not provide proper detail about what they've done. The product labeling, if believed, tells you the whole 60A could be burning that connector. And I don't think we want to believe that. That isn't safe. If you want to bypass the ATX12V connection point, you'd want to find the input point on the VCore circuit. You can see a typical VCore implementation here on page 11 (this is the chip used on my P4C800-E Deluxe). You would want to connect the ATX12V to the left leg of inductor L1 in the upper left hand corner. Where it says "Vin 12V". http://web.archive.org/web/20040331003220/http://www.analog.com/UploadedFiles/Data_Sheets/129783535ADP3180_0.pdf But I'd do some serious ohmmeter work first, before doing any more "live fire" tests :-) For example, use the ohmmeter to ohm from ATX12V motherboard connector yellow, to the equivalent of the left leg of inductor L1. You can usually spot the inductor, because it's slightly different than the matched inductors on the phases. You would also want to do a check for a short from 12V to GND, using low power ohms, on the motherboard. To see if there is a DC short already present in the circuit. If you look up the VCore regulator used on the motherboard, you can see what protections it has on output. Usually it has overcurrent protection. And that's to prevent the copper planes of the motherboard from becoming so hot, the PCB FR4 starts to become charred. That's when the processor is shorted out for some reason. Paul |
| "Rod Speed" <rod.speed.aaa@gmail.com>: Nov 18 06:37AM +1100 David Howard <dshoward@microsoft.com> wrote > doesn't wished to be traced by the government, yet, > who wants to call people that they know (which are, > for example, the main types of calls "I" make). I never agreed with anything of the sort. > They're great for: > a) Single-use Doesn't have to be single use, just used for a short enough time that 'they' wont get any useful information from what calls are made from or to it. > c) Remote control > But, they're lousy for an average citizen > who simply wants his privacy back. By definition you never had any privacy with phone calls. |
| David Howard <dshoward@microsoft.com>: Nov 17 10:08PM On Mon, 17 Nov 2014 00:19:39 -0800, miso wrote: > I tried using that Wigle website, but the filters don't work. > You see all those wifi SSIDs. Hi miso, You are mostly correct, in that Android WiGLE freeware appears to mostly be for wardriving WiFI SSIDs, but, it also lists the cellular towers it sees. The advantage is that the cellular tower information nearly exactly matches the http://opencellid.org maps you pointed us to, so, you can tell if the tower your phone is connected to is at least a known tower (and not one of the unnamed rogue towers). The disadvantage of WiGLE is, as you said, that it clutters up the output with WiFi SSIDs (which is its primary purpose), so, we need *better* software specifically for cell tower connection information. It seems, to me, that it "should" be *easy* to be warned when our cellphones connect to a rogue tower, either from the overhead Boeing DRT (aka dirtbag), or the mobile Harris Stingray, or the pedestrian Harris Gossamer devices. a. The rogue cell sites all appear to be unnamed (to date), b. While they "can" connect the call, they generally disconnect you, c. They appear to drop your connection down from 4G to 3G to 2G, d. They all seem to try to put your phone in maximum output mode, e. They tell your phone they have higher signal strength than they actually do, f. If it's on an airplane, then it will exist for short periods only, g. The rogue sites are not on the existing FCC databases, etc. Given that these general characteristics seem to be consistent, how hard do you think it would be for someone to code up an app which automatically WARNS the user (sort of like how AV programs use heuristics to warn users) that a rogue site is suspected nearby? What would be useful is, when they fly these airplanes overhead, that the tens of thousands of people being spied upon by these bad guys all get a notification on their phone of the illegal activity by law enforcement overhead. Each flight would make the news. |
| bleachbot <bleachbot@httrack.com>: Nov 17 10:28PM +0100 |
| "Gareth Magennis" <gareth.magennis@ntlworld.com>: Nov 17 09:03PM "Phil Allison" wrote in message news:082758c8-0f8d-4cfb-9d6c-c6d31dcfa2d7@googlegroups.com... Gareth Magennis wrote: > I find 3.5mm bolts hard to come by in the UK so I use my stock of 3mm > bolts > instead. ** Got mine from Farnell, a few years back. Perfect fit in the rivet holes. > And these days I use Nylon locknuts rather than mess about with shakeproof > washers / adhesives etc. ** The bolt and the terminal block will easily rotate in the hole if no star washers or super glue is used. ... Phil I have found Nylon locknuts to be invaluable in certain difficult situations. Because they have substantially more height than a hex nut, they are much more easily held in a box spanner, or manipyulated with a finger until the threads engage properly. Sometimes this is the only way you can fit a nut onto a bolt where access to the nut is almost impossible, and fitting a shakeproof washer and hex nut more impossible than impossible. In the past I have managed to stick them on the end of a very long philips screwdriver I have magnetised with a speaker magnet, and been able to position it so I could get the bolt to bite the threads. You can then wedge the locknut flats against the chassis using the screwdriver and tighten the fixing. (Think power amp front panel, trying to secure the bottom fixings via the top of the amp chassis) Gareth. |
| N_Cook <diverse@tcp.co.uk>: Nov 17 08:07PM > if you couldn't afford an HP. I had the FX-115 in high school and got > the FX-451 later on. > Matt Roberds thanks for that, I'd misinterpreted how it was assembled. More like standard TV zapper but with the wallet sandwiched between the 2 parts of the hard plastic casing |
| 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. |
No Response to "Digest for sci.electronics.repair@googlegroups.com - 21 updates in 10 topics"
Post a Comment