Samsung LE40R81b not turning on (relay clicking on and off)

[Dannyx]

Re: Samsung LE40R81b not turning on (relay clicking on and off)

IC1803 on back of mainboard?

The board in the link you provided is not the same, although IC803 appears to be the EEPROM on my board also (ATMEL 740 24c256BN). I don't have a blank one on hand, so I was thinking of removing it, erasing it and putting it back in place (after saving whatever's on it of course). The TV's busted anyway, so no way I could make it worse by doing so

[vinceroger69]

Re: Samsung LE40R81b not turning on (relay clicking on and off)

IC1803 on back of mainboard?

[Dannyx]

Re: Samsung LE40R81b not turning on (relay clicking on and off)

i think with these sets you can fit a blank eeprom and it rewrites the default data maybe see this thread
https://www.ifixit.com/Guide/Samsung...lacement/14574

UPDATE: I replaced all of those caps and it did NOT solve the issue. I guess it's on to the EEPROM...no idea where it's located though.

[vinceroger69]

Re: Samsung LE40R81b not turning on (relay clicking on and off)

i think with these sets you can fit a blank eeprom and it rewrites the default data maybe see this thread
https://www.ifixit.com/Guide/Samsung...lacement/14574

[Dannyx]

Good day folks. Got this Samsung LE40R81b TV which doesn't turn on. When I opened it up, it indeed had some bad caps (pun intended ) on the power supply. I replaced those, power supply works like normal now, producing all the correct voltages, however the problem persists: when you plug it in, the LED comes on, the relay clicks, the voltages come up, but no picture is displayed and after a few seconds, the relay drops out and the process restarts. I read in this thread, that there could also be bad caps (pun intended again ) on the main board itself. While mine is not completely identical to the one in the other thread, I DO see some 1000uF caps similar to those. My board is a BN41-00839E. I attached a photo of both the board and the caps in question. His caps were under the shield for the CPU, while mine are out in the open and I got 4 of them, while he only had 2. I see some smaller caps under my shield as well, but not having an ESR meter, taking the shield off would be nothing but a waste of time. Should I try replacing the ones on the outside first? Someone else said it could be an EEPROM issue....I've recently acquired one of those cheapy BIOS/EEPROM programmers from ebay, so I COULD work into that if it proves to be an option. Any thoughts ?