Just to close the loop on this, the used power supply I bought on ebay works fine and the TV is as good as new. Only $20 and one less TV in the land fill. Thanks for all your help!

Thanks for the link. Since we can't be sure if that's the right part for U9101, and also since there are other parts that need replacing, I decided to go with a used PS board from Ebay for $21. The kit with 3 other boards could have been a good buy, but with shipping and tax, the total would have been over $60....

Looks like I will buying the repair kit instead of indivicual components because I can't find U9101 (SSC3S121A) from the usual suspects (Mouser, Digikey). Will post back here when new boards are installed.

Thanks for all the help, you guys! I will order the parts tomorrow and if I get it working, I will donate it since Best Buy is replacing the old one under warranty. I also hate to see things go to the landfill.

BTW, I can't believe they sell all 3 boards for only $33. It may be a wash buying the boards, vs. the parts I need....

Thanks and yes, I will replace the mosfet with the exact part if I can get it to show signs of life. You were right about an open resistor. The .3 ohm resistor was open. But after replacing that, still no joy. I had to get out the high powered microscope the read the number on U9101. It is SSC3S121A, if anyone else needs to know. Anyway, it is supposed to have 15V on Vcc, at least during startup and I measure about 1.5V. It is not heating up, according to my thermal camera. I will order a replacement U9101, but are there any other parts I should order? I will of course get the correct...