This set has been in for repait 4 times in 5 years. I fixed the last time by soldering in the IC's on the power board that hadn't even been soldered. Now (about a year later) I turn it on, the LED lights for a few seconds then goes off. I suspect a power protection circuit problem. Does anybody have a source for power board or maybe somebody parting out one these sets? Thanks for any advice. Maybe the best advice is to buy a new set but never another Mitsubishi.