Hopefully someone can help me with the problem I am experiencing. I believe digidude is good with fixing tvs. I had the dreaded tv not starting and clicking noise. So I replaced the burst and swollen caps. Tv still wouldn't turn on so I shorted pin 5 and 6 on EEPROM but couldn't get in service menu a nothing appears on screen. I can now turn tv on and off and no clicking just can get a picture. I also can get sound when hdmi connected but still no picture. Is it my main av bird still power board dodgy or something different.

Replace the eprom with a blank one and check screen settings, better still take it to your local independent television engineer

Think I might have to to engineer or just scrap it. Changed tconn board still same, bought a new main board but I thought it was the same but one connector is different

You've spent too much on it just to scrap it mate.
Parker13 gave you the answer. A common fault on this series of sets is corrupt eeprom following the demise of the caps on the smps board.

Usually fitting a blank one will let the set fire up with picture. It uses an Atmel 24C256BN, the same chip we used to reprogramme on the 8300HD cable boxes.
Just in case you need it I have attached the eeprom dump for your model.

Glad I never gave up , used a heat gun to take of EPROM from the board I bought and put it on my original board and tv fired up, thanks guys for the help

Hi everybody . Samsung le40r88 , was problems with the power supply, now turn on but no picture, on the remote control not respond. I think fault eeprom