Re: LG OLED55B7V doesn't turn on Help.
@Diah ??
@Diah ??
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Re: LG OLED55B7V doesn't turn on Help.
F1 or F20000 if you have 12V on the F from both side... try replace T-CONComment
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Re: LG OLED55B7V doesn't turn on Help.
ho. I changed. TCon board.
got one used today from damaged screen. The seller claims that it must work because the TV turned on when the screen was broken... it looks like I will have to buy another main motherboard.
what do you think?Comment
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Hello all ~
Hope this finds you well. This LG 82UN8570AUD (April 2021 model) 4K UHD television has full audio capabilities but video is compromised / problematic.
When I picked up this large LG tv it had a full black screen upon startup. Previous owner said it just went black one day. No popping sound or anything else of note.
I got the display to work by taping off several traces of the right-hand side ribbon cable on the TCON that leads from TCON to PANEL. However, despite dozens and dozens of attempts to find the right combination / range of traces taped... -
Problem
This is an LG edge LED lit LCD Display. The LEDs are on the bottom edge of the display. There are 2 bars (left and right) Each bar has many LEDs and a 6 pin connector. Each pin drive several LEDs thus is the highest current flow / heat junction. The weak lead free solder gradually fails with thermal expansion/contraction cycling and increases resistance. PSU will compensate up to a point, then when the current is too high, PSU just shut down the backlight causing a dark display. I have even seen one which the connector just fell off as solder points became completely detached.... -
Hi everyone,
I got this monitor with black screen problem.
I thought the problem was in the motherboard, so I bought 2 smashed monitor same model to disassemble boards and swap them, but same issue remains.
After some tries I've found out that connecting LVDS cable on-fly after powering on the LCD panel let me see the whole screen for half sec, then goes black again.
TCON got two output flats, because each flat goes to a tiny board with some COF, each tiny board manages half LCD panel.
I discover that if I leave connected only right side (right flat of the TCON),... -
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... -
This thread is about trying to get an Universal Main Board to work with a Sharp TCON and panel.
I have a Sharp LC-46D85UN TV that has had a main board issue. Since this model is from 2009, I am not able to find an exact replacement of the main board. Instead, I decided to see if I can future proof this tv by getting a Universal Main Board (T53U21.2) from China to work with the Sharp TCON (CPWBX4291TPZA) and panel. The universal main board supports a 8 bit dual channel LVDS interface whereas the TCON requires a 10 bit dual channel LVDS input. I have modded the LVDS connector to match...
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