So, I finally got my TV back ... (they did something to teh power, and found a vertical line on the screen so they fixed that.... whether I got teh same TV back or not, I'll never know.... I could look it up I guess).
so, I went to Best Buy, bought a sign wave UPS system (this TV only uses 200 Watts, so its not huge one), and plugged the TV in an it worked.
And it still worked the next day!!!!! And the next! we're going on at least 2 weeks, which is 12 days longer than it worked the first time. The sound isn't great ... but, if you really care about sound you'll have Bose external surround sound system or something similar anyways, so it doesn't really matter.
I hope I can still be satisfied past December!