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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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),...07-30-2025, 02:32 PM -
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... -
I have a Lithonia Lighting 65-Watt Gray Hardwired Compact Fluorescent
I also have back when Light of America had these light bulbs available for yard lights
The issue with Light of America was the blast boards had all most certain board failure while bulbs hardly ever fail
While the Lithonia lighting fixture has all most certain bulb failure
So I have modified the Lithonia lighting fixture to accept the Light of America light bulb and see how long this will last
I have only had this light fixture for not more than a year if it...
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