There are a couple posiability;s it could be the flyback transformer breaking down at start up . or a shorted CRT or a bad high Voltage block or caps on the smps module since its not totally coming up id suspect the smps module and its most likely caps that have failed
if you take the back off and the board on the left look at it closely and see if there are 3 or 4 caps swollen and the tops about to burst or already have and let me know from that point also its a good idea not to keep trying to power it on as this can cause a crt to be damaged
CHECK WHERE THE BULB IS LOCATED TEN ON THE BULB HOUSING THERE MAY BE A SCREEN THERE TRY CLEANING THE SCREEN IT MIGHT NOT BE GETTING AIR FROM THE FAN TO COOL IT CAUSING TV TO SHUT OFF
SOURCE: it wont stay on it cuts itself off and on the power button has t
This seems to be a problem in the Power Supply I would think. Either that or a fault that is overloading the PSU.
This means a trip to the repair shop.
Make sure ya get a firm "Quote" for tha fix before proceeding.
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