I have this set with very dark screen fault, full bright colour as if the backlight was turned down,it runs the T370XW02.V5.CB T.Con with the AS15 gamma chip have tested the gammer test points 1-20 and voltages ramp down Ok but they dont look to be high enough starting on T.P 1 at 7.79v and ending on T.P 20 at 1.69v,have seen other test on these boards show a lot higher voltages? it is showing 12.5v at the 12.0v test point. before i try a new board has anyone any suggestions thanks Flocko
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Re: LE37R87BD T.Con gamma fault ?
I put a new AS15-F Gamma chip on the T.con and the set is now running fine, so even with a good voltage ramp down on the gamma test points, low starting voltage on t.p 1 was 7.79v and is now show at 15.04v and ramps down to 1.89 v on T.P 22with the new chip.
Flocko -
Re: LE37R87BD T.Con gamma fault ?
Thanks for info on your observation about the voltage readings? Where did you get the IC from? I have some problem when I buy 5 at a time, they're not all good, looking for reliable sources. Thanks.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: LE37R87BD T.Con gamma fault ?
Hi Budm I got it off a guy on ebay sells a lot of them but he is in Uk and I think with postage came out at under £2.50, would think he gets them from China.I see you can get ten for £11.00 with free post from there, thinking of getting some from there as this one was the second one this month I have had to changed FlockoComment
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Re: LE37R87BD T.Con gamma fault ?
I buy 5 (afraid to buy 10) at a time from Ebay (Chinese sellers) and get 4 out of 5 or 3 out off 5 that are good. So let me know if you run into any bad one from the same seller in the future repair.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: LE37R87BD T.Con gamma fault ?
just ordered ten 15-f from China £11, bets are on that I will need 15-G or U when they get here, be my luck FlockoComment
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Hi,
i have a 65 Panasonic TX-65HX710E using vestel 17MB170 main and Lg tcon.
Few drops of water fell probably near COF and have no display. Tried removing tabs but no.part of display present as if tcon fuse open. However 12v is present and tcon can be felt warm enough that supplies are present. Backlight and sound ok.
Anyone knows if this TCon 6870c-0805A has any special test pins for rgb test?
Appreciate your help.... -
Hello.
GPU came in, green lines. Spent lots of time using to get the Mats / mods drive working (found on youtube).
Found issue with a RAM block
Replaced, green lines gone.
Trying to test again, assuming getting the false positive. Originally had over 1K on a single bank. Now getting tosses low between banks.
Used a good card to test and same results low errors 32+.
I am just search for some form of command to do a full test on the GPU.
I just ran the mats command with my good GPU and passed after roughly 40 min.
The repaired one, ran... -
Just bought this for 10 bucks yesterday hoping to fix it. The guy said water dropped inside from a dehumidifier hose and it started showing black and white vertical bars then went blank. When I got it home and turned it on it came on fine and displayed correctly but I was noticing faint vertical bars in the image. After a little bit I turned it off and back on and it was a black screen again. I opened it up to check for water damage and corrosion but didn't find anything of the sort. I cleaned the ribbons anyway and reconnected them but still got a blank screen. If I disconnect the right side... -
Hi There,
This TV was auto switching off after few seconds with some vertical lines on the screen, so got a new TCON board and replaced it.
After replacing the TCON board it was working fine and i set it up with everything, used for few hours, then had the bright idea to update the software on it. During the update process, TV switched off and now no audio or video. No relay switch sound.
More Details
TV Model - LG OLED77G1PUA
Got the same exact TCON board from TVPartsToday and replaced it. But didnt transfer the EPPROM data (didnt... -
Hello
I have power adaptor(220V/input, 12V 1.2A/output) which has symptom of fluctuating output DC voltage between 11.5V-12.2V.
So I opened its plastic case and when switched it on, I heard constant tik tik sound from inside its PCB.
I measured DC voltage between negative and positive pin of the largest capacitor(400v 10uf) and it was measured contant 300V.
I also measured ESR value of all capacitors and I noticed that one of capacitor(KMG 16v 470uf), which located in the secondary side, have high ESR value(10 ohm),So I replaced it with same specification NXH capacitor....
Comment