RCA Projection TV won't turn on (by 2 users)

Ok you got you a Rca ITC222 I See ALOT of these things. To start the troubleshooting.. UNPLUG the set for a min of 30 min the plug back up. ( I have never seen this work) If the set stil fails to come on then you have a processor lockup. The first thing you can conclude if the light flashes is it is NOT a FUSE. THe sets processor has determined that a safety condition has occured and shuts it down to prevent further damage and fire. THe top cause of this include Horizontal output trasistor, flyback transformer and high voltage splitter. but There is about 25 different failures that can drive it into shut down. technicains have interface equipment that can read errors codes much like a car.
typical repairs on this set run 150 to 350... if you have to replace tubes...250 per tube +labor which runs 250 ... these set new cost 800 so unless under warrenty.. you got to determine if it is worth it.