re mysterious tv problem source if the set is direct line powered try checking the likely to be there hybrid regulator module down stream from the volt supply several sets i ve looked at use a volt regulator the regulators have a tendency to short out making the safety circuits shut down the eht supply section try putting the set on a variac or adjustable transformer and lower the ac input voltage to the set to about volts if the set operates nromally then you know you ve got a shorted regulator there are myriad other areas for problems but i ve seen the one above several times also if the set uses one the trippler module may be shot that s fairly common bill mayhew neoucom computer services department rootstown oh usa phone wtm uhura neoucom edu n wed
