I posted this same problem a few times in the last 3-4 weeks. The set will not power up. Model #50EX10B. I have checked, replaced, and checked some more, various components. I have traced a problem to the system IC0001 and eeprom IC0002. I should have 5 volts at pin #44 of IC0001 (on/off) circuit, but I have 0 volts. I should have 0 volts at pin 3,4 of eeprom, but I have 5 volts. I scoped the data lines on the eeprom, but I don't see any type of data, only steady 5 volts. I am aware that corrupted eeproms can cause many different problems for a TV, and am suspecting this as the culprit to all my problems, since some of the problems are intermittent. The B+ wasn't regulated (198 volts), kept blowing fuse, blew Hot twice, etc. Now the set won't do any of this. Only relay clicks on/off with power button. Would a faulty eeprom cause all these problems, including missing the 5 volts on pin
44 of system IC? Anything further I can check/test here before replacing another component? Thanks a bunch group for all you responses and help to this point.