and after awhile teh picture came back on its own, (the CRT "Glow" can be seen from the backside thru the vents.) but its gone out a few times as well.
OK so picture sometimes goes out but it does return. Might definitely be the flyback transformer. You need to get that tested. Or it could be something simple like dry solder joints not forming proper connectivity. Normally would breakdown when unit warms up and be okay when cold. What happens if you give it a good bang when its not working ? does the image come back for a moment or two ?
Once I picked up a nice looking more modern flat screen CRT TV
from the side of the road, it would powerup but picture would dissappear to black screen until it cooled down. I figured dry joints. So I discharged power caps, and reflowed the joints within power related circuits. Then it worked perfect after that.
Best to send to a electronics repair shop if your not experiencecd with high voltage appliances.
