Re: LCD TV and Monitor basic troubleshooting guides
This thread is for learning and for reference material, see the post you made for that TV you are trying to fix. Posting same request in more than one thread causes problem.
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Re: LCD TV and Monitor basic troubleshooting guides
Needed scahematics diagram for all circuit boards for: TV SONY KDL-52ex700Leave a comment:
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Re: LCD TV and Monitor basic troubleshooting guides
http://televid-sib.ru/index.php?topic=42098.0
Power Supply Samsung BN44-00632A BN44-00633A schematic
Registration required!Leave a comment:
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Re: LCD TV and Monitor basic troubleshooting guides
FAQ ceramic caps: Capacitance and Applied Voltage
https://cdn.badcaps-static.com/pdfs/...1cafebd52c.pdf
http://www.murata.com/en-us/support/...mlcc/char/0005
https://ec.kemet.com/ceramic-capacit...tage-ask-fae-1
https://www.maximintegrated.com/en/a...ex.mvp/id/5527Leave a comment:
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Re: LCD TV and Monitor basic troubleshooting guides
Hi to all I am new here and have a question. I own a Sony KDL-60-EX500 one day the TV went out it has a black screen but I do have full backlighting and sound just no picture.I also notice the front panel blinks 5 times. My question is should I replace the T-con board or the Main board what are the odds of either boards fixing the problem? When I power TV on it shown Sony logo and startup sound then screen gets dark but I do have full backlighting any help is appreciated thank you all.Leave a comment:
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Re: LCD TV and Monitor basic troubleshooting guides
TRAINING SAMSUNG ES EH SERIE
WAIT UNTIL GET MANUAL APPEARSLeave a comment:
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Re: LCD TV and Monitor basic troubleshooting guides
http://reflektor.kz/articles.php?article_id=45
LED - Hintergrundbeleuchtung Treiber
(Ersatz von CCFL - Lampen auf LED)Leave a comment:
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Re: LCD TV and Monitor basic troubleshooting guides
http://reflektor.kz/articles.php?article_id=39
http://reflektor.kz/articles.php?article_id=42
EDGE LED DIRECT LEDLeave a comment:
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Re: LCD TV and Monitor basic troubleshooting guides
Power supply info. WE-ONLINE
http://www.we-online.com/web/en/pass...tion_45887.phpLeave a comment:
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Re: LCD TV and Monitor basic troubleshooting guides
SAMSUNG EH UND F SERIE no Backlight
[url]https://www.youtube.com/watch?v=KHBdZqGhMTg[/url
http://www.berlin-repariert.de/samsung-qualitaet-ue32f6270-kein-bild/
LED Driver IC slc1012c on backside smps often defect!Last edited by thoma; 08-03-2017, 05:16 AM.Leave a comment:
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Re: LCD TV and Monitor basic troubleshooting guides
Sharp TV training manual:Leave a comment:
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Re: LCD TV and Monitor basic troubleshooting guides
Can somebody tell me what is the use of STV CKV CPV signals on TCON strip.
What voltges will i get for them with mutimeter & what waveform will i get with DSOLeave a comment:
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Re: LCD TV and Monitor basic troubleshooting guides
OK i spent some time and discovered the following.
Bad cap C131 had value of 39uF and ESR of 2ohm. It should be 47uF and 70mOhm. So ESR was way higher than needed.
C102 was OK with capacitory, however, ESR was 0.173ohm. I replaced it anyway.
Since I did not have tantalum capacitor and could not keep TV open I had to fix it right away. I used 39uF 100V ChemiCon capacitors, 3 of them in parallel so I got ESR exactly 0.070ohm while capacitance was around 120uF.
These caps were replacement ones for the old projection TV, chassis RCT CTC169 (power supply).
One note I wanted to add is that Fluke 28 measured 52uF for defective cap so this means that we should not rely our decitions based on capacitance value measured by regular DMM.
Also Sencore LC103 is outdated for these new stuff, it measures as low as 0.01ohm and its test leads as well as relays inside, which become old, are not reliable way to measure such a low ESR.
Here are few pictures to share..Attached FilesLast edited by skafiskafnjak; 07-09-2017, 01:01 PM.Leave a comment:
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Re: LCD TV and Monitor basic troubleshooting guides
WHat if I use 5x 10uF electrolytic in parallel?Leave a comment:
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Re: LCD TV and Monitor basic troubleshooting guides
They used 47uf 10V SMD Solid Tantalum cap which has low ESR and also does not dry out and deteriorate with times like typical lytics cap, it also smaller than lytics cap with the same value.
Some info:
https://cdn.badcaps-static.com/pdfs/...dea5e3c0ff.pdf
https://cdn.badcaps-static.com/pdfs/...ee7d39a774.pdf
https://cdn.badcaps-static.com/pdfs/...63aae3b97e.pdfLast edited by budm; 07-08-2017, 10:39 PM.Leave a comment:
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Re: LCD TV and Monitor basic troubleshooting guides
Thank you so for the info very usefulLeave a comment:
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Re: LCD TV and Monitor basic troubleshooting guides
LED Backlights info.
http://alpengeist-tvrepair.blogspot....ces-tools.htmlLeave a comment:
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Normally, I never post repairs this quick after I do them, because… I am usually very slow.
But today, I’m making an exception here. Why? No idea. Perhaps only because the repair details are still “fresh” in my head… which is ironic, given this is a 16 year old monitor that hardly anyone will care about today. It is new to me, though. 
I picked it up last November from someone on my local Craigslist. It wasn’t very close to where I live, but was close to a family friend that I had to go visit anyways. So after watching the posting on Craigslist for a few weeks and seeing it getting...
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Hello Badcaps Community,
I purchased a preowned AOC monitor that is not working and out of warranty. It was sold as not working. I am looking for guidance on self-repair. In particular, I am after the firmware for the monitor. At the end, I have included monitor model information and links to pics and vids of the issue.
The problem is that it will not display a picture on any of its inputs. And the on-screen menu does not appear. The power button works properly. It powers on with the remote as well. But the on-screen menu does not appear, even when not connected to any... -
Good evening, gentlemen.
I have a problem with my monitor. It turns off after a few seconds or flickers. Shining a flashlight on the screen doesn't show any image, so I guess it's not the "2 seconds to dark" I read in the forum.
To turn it back on, I have to press the power button twice. Then after a few seconds it turns off again or flickers. See video.
https://drive.google.com/file/d/1L6S...ew?usp=sharing
Things I tried
- Bought a new AC adapter thinking that was the problem but the problem... -
Looking through my repair pictures and notes, it's been a long time since I posted anything in the LCD monitors section. So here goes that.
I'm dedicating this thread to one of the very first LCD monitors I repaired (if not the first one), which was more than 10 years ago now. The monitor is a Wise Wing, model F199. It's a 19” CFL-backlit LCD. I got it for free off of Craigslist in 2009 from a guy, who said he bought it for cheap from Wallmart and the monitor worked only for a little less than 2 years before quitting.
When I saw the Craigslist post, I wasn't... -
My pc:
10850K stock 4800mhz stock Kraken X73 good temps
2x16 GB DDR4 GSKILL 3000mhz XMP
Seasonic Tx-850 Ultra Titanium
Gigabyte Rtx 3090 Gaming OC
Aorus Z490 Pro Gaming
1 TB SSD
4 weeks ago i launched Metro Exodus Enhanced and during cinematic advertisement part ( 30 fps ), pc just shutdown.
Also monitor flickered with NO SIGNAL 10 seconds after shutdown. So only monitor and pc was affected.
Next i pressed only power button, rebooted again and its fine again. Happened once and i cant reproduce.
Power...
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