So picked up a 72" A650 on saturday from craigslist for dirt cheap. Its doing the power off overheat after about 2 min. Ive ordered both replacement exhaust fans and nice 10,000 hour replacement capacitors for power board type A, ballast and the digital input board. Total was like $21 for all the caps and $30 for fans. Ill solder those in, replace the fans and then add a diy usb powered fan and see what happens.