First, I was having my TV that I bought for less than year acting up. The TV will freeze and restart then stuck in the loop over and over again. I read countless forums trying to troubleshoot this delima. Finally, I came here and with some help from others post I completely have my TV fix at least for now LOL.
Steps to fix
_Remove the back cover of ur TV
_Now you have to identify the power supply board (P/S) and the main board
_Once located, there is black 18" cable that connect the two boards (aka eleteck cable). Depending on your the TV, the cable has 14 to 24 connector pins.
_squeeze and pull out the cable and examine it. You usually see burnt (brownish colored) ports at connecting part
_for starters, I will say the eleteck cable has labels read yours and you can find online like $20-40 at TV parts site. The number of pins and temperature limit are the most important things when buying it.
_for those of you that want quick fix, clean the burnt holes in the eleteck cable connecting ports. Careful not to break anything. You should use sharp niddle or razor blade to scape gentlly.
_hook the eleteck cable back foe the two boards and yalla problem fix.
If there is no burnt ports in the eleteck cable then here are fews things to check.
There's forum about checking the capacitor on the power supply board and if it read low voltage you might wanted to replace them. You can get those capacitors from radio shark. Again, check labels on to get right match i.e temperature and current value
If all fails, just get new power supply board at eBay about $90 more or less
Thanks I hope it helps