Samsung LN37A550P3F with bad Gamma AS15 AUOPTO T-CON

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  • x_orange90_x
    TCL 50S535 bad tcon or panel issue?
    by x_orange90_x
    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...
    03-29-2025, 11:02 PM
  • Hakuu
    LG OLED77G1PUA - No Video / Audio after a TCON Board change and Software Update
    by Hakuu
    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...
    07-12-2023, 02:37 PM
  • Daren87
    Sony 8K XBR-75Z8H White Screen Vertical Bars Tcon Code. Help Needed🙏
    by Daren87
    Hello everyone,

    I've recently been given a Sony 8k Z8H. It's got a white screen with two vertical black bars. At times it's given me the 5 blink Tcon code. Testing voltage on the Tcon I can see some low or missing voltage. I've done a basic visual check of cables and the COF. Not seeing anything obvious. The original Tcon seemed to have good caps until turning it over. On the bottom I found maybe 10 caps with both sides of the caps shorting to ground. I thought ok these caps and likely other components on the Tcon are shorted so let's try a replacement Tcon. I just received the...
    08-13-2023, 03:25 PM
  • alltvrepairs
    Lg TCon test pins for screen test
    by alltvrepairs
    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....
    06-13-2025, 06:33 AM
  • angelos
    TCON and self diagnosis!
    by angelos
    Hi Guys.
    I have experienced something rather unique and need to find out by the forum what to make of it.
    I got in this set, a JVC or Telefunken LED TV whose complaint is that sometimes the set comes up blank with the back lights running. So I switched on and yes there was a blank screen and back lights were running. I checked the fuse on the TCON and sometime later I lifted the set off the table to check the image (the TV has no feet to let it stand upright) and noticed the set was cycling red, green blue, test pattern, blank then all over again doing this. Suddenly the no signal...
    09-19-2022, 03:05 AM
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