LG 32LG3000 TV, three red light flashes, then the backlight turns on, but no picture

[ItepK]

Hello everyone! I've found this television, and I began troubleshooting it.

First, the television kept rapidly power cycling. I've warmed up the capacitors with a hairdryer, and after 3 dimmed red blinks, the backlight turned on, then turned dim, and no picture was present on the screen.

I believed that this was caused by a bad power supply producing insufficent power (I've measured 3.5v on the 5.2v rail), so I've blindly recapped the board.

After the recapping, all the voltages stableized, however, the issue in the title still remains.

I could also hear a strong buzzing from the inverter, so I've disconnected the inverter and I've tried to look for a fainted image with a flashlight, however, no image was present.

Is it safe to assume that the Tcon board is dead? Could there be problems with the mainboard?

Thank you for your answers!

[nomoresonys]

Can you post some pictures, I can't see it from way over here.

[ItepK]

Can you post some pictures, I can't see it from way over here.

Sorry, I've thought that some professionals would be able to give some advice without the pictures. I've uploaded a few.

Also, here is a video about the issue:
https://youtu.be/7yn2PLTSQ6Y

[nomoresonys]

Well replace those caps on inverter board or test them, They're prolly original.

[nomoresonys]

Need to be VERY CAREFUL dealing with those inverter boards, the HIGH VOLTAGE on them can kill easily. It's not like dealing with led tvs. The voltage is large.

[nomoresonys]

Actually these old tvs aren't worth messing with, who knows when the ccfl's or old transformers will burn out if they haven't already and they contain mercury. With the current prices of tvs, I wouldn't even bother with less than an led lit tv.