ln52b630 main board

[grumps13]

I tried replacing the main board on my TV and when I got the new board my TV did not want to turn on. Although it took me some time to get a new board, I was only able to find a compatible board but when I switched the board my TV didn't want to turn on. I tried putting the old board back and it did the same. Originally, it would at least try to turn on a number of time until it finally would but now all I get is nothing. The front panel LED turns off when I hit the power button on the remote but I don't hear the turn on sound anymore. I had posted a thread previously about my issue and this is the link https://www.badcaps.net/forum/showth...light=ln52b630. I don't understand why now it will not even try to turn on anymore. did I somehow erase the firmware when I tried the new board? If someone can help it would be greatly appreciated.
Thanks,
grumps13

[grumps13]

Re: ln52b630 main board

Just to add to my problem. If I unplug the mainboard from the power supply the back lights still come on. With the mainboard connected, I will see the power indicator light on the front panel but when I hit the power button on the remote it turns off and stays off. Also, I can't seem to turn the TV on using the touch power button on the front panel and if I leave the TV connected for a long time without powering up, the power indicator light will remain on regardless if I hit the power button on the remote. also, here's the link to the original post again.