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Pimpom <Pimpom@invalid.invalid>: Mar 09 07:14PM +0530 I have a BenQ G2420HD monitor that was damaged during transportation. Two of the four CCFL tubes were broken and I've solved that problem but it still has a fault. These are the symptoms:   1. When switched on, it lights up and presents a normal display FOR ONE SECOND, then goes dark for 3 seconds, lights up again for one second and then goes dark permanently. Power cycling repeats the same behavior over and over.   2. It detects the video and sync inputs. The pilot light stays green as long as there's a signal input (even when the screen goes dark by itself as described) and turns amber when there's no signal.   3. The LCD panel syncs and displays correctly even when the screen goes dark by itself. I verified this with an improvised backlight. It is only the backlight that is misbehaving.   4. The light/dark cycle is caused by the 3.3V ENA signal from the control board to the inverter coming on and off. It's too regular to be a thermal issue.   5. All power supply voltages (17V, 5V & 3.3V) are OK. The control board controls the inverter with *one-way* ENA and DIM signals. There is no feedback from the inverter to the control board.   6. The control board doesn't have obvious cracks, burn marks or bulging capacitors.   Any help will be greatly appreciated.

tabbypurr@gmail.com: Mar 09 06:43AM -0800 On Friday, 9 March 2018 13:44:56 UTC, Pimpom wrote:   > 6. The control board doesn't have obvious cracks, burn marks or > bulging capacitors.   > Any help will be greatly appreciated.   bad electrolytics are often not visibly damaged, test them for ESR if practical. Or holding a similar one one in parallel can find a bad one by making it work ok.   If a 3.3v signal line is the cause, you could always cut & tie it high or low.     NT

John-Del <ohger1s@gmail.com>: Mar 09 06:50AM -0800 On Friday, March 9, 2018 at 8:44:56 AM UTC-5, Pimpom wrote:   > 6. The control board doesn't have obvious cracks, burn marks or > bulging capacitors.   > Any help will be greatly appreciated.   If we ignore the shipping damage, it sounds like a typical back light problem. Are you sure you have the correct CCFL tubes in the display?   There's a chance one or more of the inverter transformers was damaged when the display was run with an open tube.   What you can do is place your scope probe on the plastic part of the lamp connector. Where it goes exactly is unimportant as you're going to be looking for *differences* in the waveforms between the original tubes and the replacements. In any case, don't make any electrical connection or you'll likely damage your scope input. But you must be sure to place the probe in the exact same spot on the connector as the waveform will vary greatly with just a small physical movement.   Look at the waveforms for each of the tubes during the time it's actually lit. If one or more waveforms differs from any other, the controller IC will shut down the inverter. Too large a waveform usually indicates a bad, weak, or incorrect CCFL tube. A low or distorted waveform will usually indicate a bad transformer.

John-Del <ohger1s@gmail.com>: Mar 09 06:54AM -0800 > bad electrolytics are often not visibly damaged, test them for ESR if practical. Or holding a similar one one in parallel can find a bad one by making it work ok.   > If a 3.3v signal line is the cause, you could always cut & tie it high or low.   > NT   The problem with altering the enable control is that if the controller IC is shutting down the array because of a real problem, the inverter will burn up if forced to run.

Pimpom <Pimpom@invalid.invalid>: Mar 09 09:14PM +0530 On 3/9/2018 8:20 PM, John-Del wrote:   > There's a chance one or more of the inverter transformers was damaged when the display was run with an open tube.   > What you can do is place your scope probe on the plastic part of the lamp connector. Where it goes exactly is unimportant as you're going to be looking for *differences* in the waveforms between the original tubes and the replacements. In any case, don't make any electrical connection or you'll likely damage your scope input. But you must be sure to place the probe in the exact same spot on the connector as the waveform will vary greatly with just a small physical movement.   > Look at the waveforms for each of the tubes during the time it's actually lit. If one or more waveforms differs from any other, the controller IC will shut down the inverter. Too large a waveform usually indicates a bad, weak, or incorrect CCFL tube. A low or distorted waveform will usually indicate a bad transformer.   Before we go further with your suggestions, please see my point No.5 again. There is no way the logic board can know about an inverter problem. It just sends and stops the ENABLE signal as described without any feedback from the inverter.   The power supply and the inverter are on one pcb while the logic and display circuits are on another board. The power supply remains fully ON as long as it's plugged in. The only connections between the two boards are via a 4-way cable: 1) +5V to the logic board 2) GND 2) ENABLE /from/ the logic board 3) DIM PWM signal /from/ the logic board   The inverter does not turn off by itself. It's turned off when the ENA signal from the logic board stops.

avagadro7@gmail.com: Mar 08 02:31PM -0800 With a few days time n $$$ a new cargo area speaker upgrade is on.   I am flummoxed at what speakers. Wanna do fromm scratch wiring crossovers enclosures.   One theory question...how figures is from space of cargo ? Enclosures are on shelf in back of cockpit ? Smaller or larger than 10/10/10   I am adding a woofer. Do I plan for a 3 way system as such or 'add' a woofer ?   Is a range speaker now called a midrange speaker ?   The range of available units is mind buckling chinese overload capped by complete " DIY" CROSSOVERS   WHERE find a solid DIY 100 mid range n tweet buddy in 2000 terms ?   GD

avagadro7@gmail.com: Mar 08 02:33PM -0800 Mid range driver or mid woofer ?

tabbypurr@gmail.com: Mar 08 04:02PM -0800 > The range of available units is mind buckling chinese overload capped by complete " DIY" CROSSOVERS   > WHERE find a solid DIY 100 mid range n tweet buddy in 2000 terms ?   > GD   Maybe we could help if you could tell us what the situation is, and phrase your questions so they make sense in English.

gregz <zekor@comcast.net>: Mar 09 08:59AM > on shelf in back of cockpit ? Smaller or larger than 10/10/10   > I am adding a woofer. Do I plan for a 3 way system as such or 'add' a woofer ?   > Is a range speaker now called a midrange speaker ?   A squawker is mostly called a midrange for some reason. Squawker fit perfectly between woofer and tweeter.     > complete " DIY" CROSSOVERS   > WHERE find a solid DIY 100 mid range n tweet buddy in 2000 terms ?   > GD   I'm still working on other questions.   Greg

avagadro7@gmail.com: Mar 09 07:37AM -0800 Mid range woofer is a 'mid range driver' was the speaker of paper cone under the tweeter ?

Jeff Wisnia <Jwisnia18@DUMPTHIScomcast.net>: Mar 08 05:55PM -0500 > As to KM vs. Miles - sheesh! I have driven in 8 countries on three continents. Only one uses MPH. One is courteous enough to put up the signs in both in many locations (Saudi), and one does so on main highways (Both of them - Bahrain). It is _REALLY_ hard to remember that 62.5 MPH = 100 KPH, and that 75 MPH = 120 KPH. And so on and so forth.   Every car I can remember being in here in the US of A for quite a number of years has had a speedometer with MPH and KPH calibrations on it.   Jeff   -- Jeffry Wisnia (W1BSV + Brass Rat '57 EE) The speed of light is 1.8*10^12 furlongs per fortnight.

"jfeng@my-deja.com" <jfeng@my-deja.com>: Mar 08 04:52PM -0800 > locations (Saudi), and one does so on main highways (Both of them - Bahrain). > It is _REALLY_ hard to remember that 62.5 MPH = 100 KPH, and that 75 MPH = 120 > KPH. And so on and so forth.   About a decade ago, I was told that in Ireland the road distances are posted in km whilst the speed limits are given in mph. When I asked a few years ago, I was assured that this was still true. However, from my point of view, this is just hearsay since I have not actually witnessed it.

Phil Allison <pallison49@gmail.com>: Mar 08 05:49PM -0800 jf...@my-deja.com wrote:   -------------------------   > About a decade ago, I was told that in Ireland the road distances are posted in km whilst the speed limits are given in mph.   ** Since 2005, Irish speed limits are posted in km/hr.   https://en.wikipedia.org/wiki/Road_speed_limits_in_the_Republic_of_Ireland#Signs       .... Phil

Jeff Liebermann <jeffl@cruzio.com>: Mar 08 06:40PM -0800 On Tue, 6 Mar 2018 00:20:56 -0000, "Gareth Magennis" <soundserviceleeds@outlook.com> wrote:   (...) >powerful, and most knowledgeable, but it would stupid to mention it in >public. It tends to attract attention, something we really don't need >or want.   I agree, probably because I wrote that. You really should spend some time learning how to properly format a Usenet posting, so that my rants are properly attributed to their rightful author.   On April 19, Israel celebrates 70 years of independence. Every year for at least the last 15 years, a document approximately titled "Facts about Israel" is recirculated. Plenty of variations to choose from online, all of them somewhat different: <https://www.google.com/search?q=facts+about+israel> Besides the usual boasting about firsts, Nobel prizes, and innovation, there are some interesting items of trivia:   <https://jewishnewhaven.org/press-releases/70-surprising-facts-about-israel> 70) Many Jerusalem apartment leases include the strange stipulation that if and when the Messiah comes, the lease is void and the tenants must move out.   <https://www.quora.com/Is-Israel-a-normal-country/answer/Aishwarya-300?share=fae3ec62&srid=76iC> 1) There are over 100 sushi restaurants in Tel Aviv...   <https://www.thejc.com/news/israel/65-facts-you-didn-t-know-about-israel-1.43742> 25. Microsoft has more employees in israel than it does per capita anywhere in the world.   62. Israel is one of only three democracies in the world without a codified constitution. The others are Britain and New Zealand.   -- 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

tabbypurr@gmail.com: Mar 09 03:12AM -0800 On Friday, 9 March 2018 02:40:52 UTC, Jeff Liebermann wrote:   > 62. Israel is one of only three democracies in the world without a > codified constitution. The others are Britain and New Zealand.   We (UK) have the Magna Carta. While its provisions are few, one of them is more than a little important.     NT

"pfjw@aol.com" <peterwieck33@gmail.com>: Mar 09 04:44AM -0800 > We (UK) have the Magna Carta. While its provisions are few, one of them is more than a little important.   The Magna Carta was written between the lesser and the greater nobles - and had very damned little to do with the serfs. Keep that in mind. Just as the US constitution was written by and for white property-owners - those able to vote at the time.   We have this naive way of re-writing history and taking older information and applying it to situations to which it is neither sensitive nor does it apply. For the edification of Old School, The American Constitution (and American Law as it derives from it) was and is based on English Law (as compared to Roman Law, subsequently, Napoleonic Law), and the Magna Carta is the first inkling of that. And, the bedrock of English Law is the principle that *What is not Forbidden, is Permitted". This is the direct opposite of Roman Law. And the 9th & 10 amendments in the Bill of Rights is the direct expression of this. Please note:   The US Constitution does not speak to: Homosexuality Marriage The National Flag Abortion Transgenders Made in USA   nor many of the other red-meat neo-con issues of the present day. By direct application of Constitutional Principles, all of the above are entirely of no consequence within the context of the Social Contract. I suggest you read your Locke.   For what it's worth, the United States has the longest-lived continuous government in the world - for the moment. And, please do not give me crap about England. The British government of today is nothing like it was under George III.   Peter Wieck Melrose Park, PA

Mike Coon <gravity@mjcoon.plus.com>: Mar 09 12:53PM In article <bpif9dhve83c75av5tcsmeac2jvn74k4ok@4ax.com>, oldschool@tubes.com says... > looks like I am gonna have to fidn something at an electronics store or > ebay. My question is *What do you call this sort of knob*? I dont know > what words to search for.   It's a motivation to read the poem "Today we have naming of parts", which will not help at all.   Then get a short bit of 1/4 inch nylon or similar rod, cut it down the middle, stick the two halves onto your sharp shaft and fit a standard knob.   Mike.

Mike Coon <gravity@mjcoon.plus.com>: Mar 09 12:54PM In article <b29b02e9-5852-4f60-b2b6-87171f5cbf9e@googlegroups.com>, tabbypurr@gmail.com says... > > codified constitution. The others are Britain and New Zealand.   > We (UK) have the Magna Carta. While its provisions are few, one of them is more than a little important.   > NT   I was looking at a presentation on and of Magna Carta in Salisbury on Wednesday. (Unconnected with the fuss about the poisoning of a russian spy, his daughter and a policeman in that city last weekend.)   IIRC less than 10% of its provisions are still encoded in current law according to the modern translation.   Does the US really benefit from having a constitution? E.g. on the subjects of free speech and gun law?   Mike.

tabbypurr@gmail.com: Mar 09 05:01AM -0800 > On Friday, March 9, 2018 at 6:12:52 AM UTC-5, tabby wrote:   > > We (UK) have the Magna Carta. While its provisions are few, one of them is more than a little important.   > The Magna Carta was written between the lesser and the greater nobles - and   correct   > had very damned little to do with the serfs. Keep that in mind.   wrong wrong wrong.   XXIX. NO Freeman shall be taken or imprisoned, or be disseised of his Freehold, or Liberties, or free Customs, or be outlawed, or exiled, or any other wise destroyed; nor will We not pass upon him, nor condemn him, but by lawful judgment of his Peers, or by the Law of the land. We will sell to no man, we will not deny or defer to any man either Justice or Right.[228]     > For what it's worth, the United States has the longest-lived continuous government in the world - for the moment. And, please do not give me crap about England. The British government of today is nothing like it was under George III.   I don't plan to, I was just correcting your major error. XXIX is absolutely key.     NT

tabbypurr@gmail.com: Mar 09 05:41AM -0800 On Friday, 9 March 2018 12:54:16 UTC, Mike Coon wrote: > spy, his daughter and a policeman in that city last weekend.)   > IIRC less than 10% of its provisions are still encoded in current law > according to the modern translation.   3 bits are still law, of which the one I quoted is rather important. It may not be much quantity of a constitution compared to the US etc, but it's very important nonetheless.   Of course having a constitution does not ensure it gets enforced, as every country can demonstrate.     NT

"pfjw@aol.com" <peterwieck33@gmail.com>: Mar 09 06:51AM -0800 > XXIX. NO Freeman shall be taken or imprisoned, or be disseised of his Freehold, or Liberties, or free Customs, or be outlawed, or exiled, or any other wise destroyed; nor will We not pass upon him, nor condemn him, but by lawful judgment of his Peers, or by the Law of the land. We will sell to no man, we will not deny or defer to any man either Justice or Right.[228]   You must be a very happy individual.   In 1215:   Nobles and the Church held 75% of the land in England, and were less than 1% of the population.   As follows:   Class Holdings % of Population   Nobles & Church 75% <0.1% Freemen 19% 10% Villiens <1% 41% Bordars <5% 32% (House-Villiens more-or-less) Slaves 0% 7%   Now, let's see some more blather about how the Magna Carta was such a wonderful document when it applied to less than 11% of the population. Seminal, perhaps. But as written and as applied at the time, it kept the villiens in their place and the landowners in theirs.   Taking things out of context and in what appears to be complete ignorance of historical conditions and facts generally not a good practice.   Peter Wieck Melrose Park, PA

"mikespo@live.com" <mikespo@live.com>: Mar 08 10:20PM -0800 Greetings.....I've always been impressed at the depth of knowledge displayed within this group so this might be the right place to ask my question(s).   I own a portable cassette player....Sony Cfd-s350.....that is in need of a new "play" button. I was able to easily lift out the broken button. The Sony website has the replacement button (through a company named Encompass) for a mere $2.32, but the postage is more than 3 times the cost of the part.   Does anyone know of a source where I can obtain the button without being price-gouged on postage? Also, how easy or difficult is it to install the button? Will I be able to just pop it in or will I have to unscrew and disassemble anything on the unit?   Thanks in advance.

Fox's Mercantile <jdangus@att.net>: Mar 09 12:33AM -0600 > Sony website has the replacement button (through a > company named Encompass) for a mere $2.32, but the > postage is more than 3 times the cost of the part.   How much is it worth to you? Total price is under $10.   Would you spend $15 for the part if the shipping was free?       -- "I am a river to my people." Jeff-1.0 WA6FWi http:foxsmercantile.com

bruce2bowser@gmail.com: Mar 08 08:57PM -0800 On Saturday, February 17, 2018 at 5:06:29 PM UTC-5, Ralph Mowery wrote in sci.electronics.repair:   > Did anyone mention a tapered reamer ? The pipe threading machines > usually > have them built in.   Do they work on rigid? pipe?

"Ian Field" <gangprobing.alien1@virginmedia.com>: Mar 08 08:14PM <jurb6006@gmail.com> wrote in message news:ccba2d2e-3e15-4273-9f67-5a611911479b@googlegroups.com...   > We can get up to change sources and adjust the picture but the keys on the > set are dirty and being the resistive ladder type you press a button and > it does pretty much what it damn well pleases.   I have nearly a dozen URCs and I've yet to find anything they work.   The one I got from Poundland pretty much does anything.

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