LCD TV and Monitor basic troubleshooting guides

[skafiskafnjak]

WHat if I use 5x 10uF electrolytic in parallel?

[skafiskafnjak]

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Also Sencore LC103 is outdated for these new stuff, it measures as low as 0.01ohm and its test leads as well as relays inside, which become old, are not reliable way to measure such a low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..

[sachin03323]

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 DSO

[budm]

Sharp TV training manual:

[thoma]

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!

[budm]

Power supply info. WE-ONLINE
http://www.we-online.com/web/en/pass...tion_45887.php

[thoma]

http://reflektor.kz/articles.php?article_id=39

http://reflektor.kz/articles.php?article_id=42

EDGE LED DIRECT LED

[thoma]

http://reflektor.kz/articles.php?article_id=45

LED - Hintergrundbeleuchtung Treiber

(Ersatz von CCFL - Lampen auf LED)

[thoma]

https://elektrotanya.com/samsung_ue2.../download.html

TRAINING SAMSUNG ES EH SERIE

WAIT UNTIL GET MANUAL APPEARS

[caseyniam3]

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.

[budm]

FAQ ceramic caps: Capacitance and Applied Voltage
https://www.vishay.com/docs/40144/capchange.pdf
http://www.murata.com/en-us/support/...mlcc/char/0005
http://www.kemet.com/Lists/Technical...or%20lower.pdf
https://ec.kemet.com/ceramic-capacit...tage-ask-fae-1
https://www.maximintegrated.com/en/a...ex.mvp/id/5527

[rodanny]

Originally Posted by budm

This is SONY training manual for the T-CON.

Exxcelent...10X

[rodanny]

Originally Posted by budm

More Learning info.

10x
Good job....

[thoma]

http://televid-sib.ru/index.php?topic=42098.0

Power Supply Samsung BN44-00632A BN44-00633A schematic

Registration required!

[sacrh]

Needed scahematics diagram for all circuit boards for: TV SONY KDL-52ex700

[budm]

Originally Posted by sacrh

Needed scahematics diagram for all circuit boards for: TV SONY KDL-52ex700

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.

[thoma]

http://forum.iwenzo.de/samsung-ue32f...tml#real295487

http://alpengeist-tvrepair.blogspot....ces-tools.html

http://www.berlin-repariert.de/samsu...ein-bild-mehr/

All about backlight LEDS LCD TV

regards thoma!

[thoma]

http://tel-spb.ru/remont-tv-lcd/

very good link!

[budm]

Samsung fast track
https://archive.org/details/Samsung_...st_track_guide

[thoma]

very good link budm!
But the fast track repairmanuals Samsung stop by EH Serie!
Do you know a link where get F H J K Serie Samsung LED TV fast track
troubleshooting?
regards thoma!