After turning on the Cuttis Mathis model # CM32020S, approximately one minute later I heard a "pop" and immediately lost picture, completely, (black screen). Sound still works. I pulled off back cover and found a fuse that's O.K. Now What? (24 comes on tomorrow night.)
My picture would go out after several minutes but I still had sound. I
took the rear cover off and blew all the dust off with compresed air.I
did this for a few times over several days nothing happened.I also took
off the rear circuit board that attaches to the tube with a round pin
socket and blew that with compressed air and put it back on. The TV has
now worked for two days without the picture going out. It
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Without investigation it is impossible to know what failed. There are a number of boards in that set where there is fairly high current used. It is possible that some components have failed.
The Panasonic service rep would service the set by swapping out the failed modules. If the set is an older model the modules may no longer be available. You can take the set in for an estimate to see if the parts are available, and to see if the set is worth to service.
Two things in your TV can make that popping sound. One is the bulb of course and the other is a capacitor. Have you pulled out the bulb to inspect it? My guess is that you have broken glass in the cooling fan, which is why there is a grinding sound. Most bulbs tend to contain the glass from getting everywhere as it's only the filament inside that pops creating little diamond looking pieces inside the lens. If a surge was strong enough or if the bulb was poorly manufactured, the whole unit can explode inside spraying glass everywhere.
If the bulb looks fine, the pop must've been a capacitor on one of your circuit boards resulting in no display. Since the TV still powers on, your power supply and it's fuse appear to be fine. Check the bulb first and go from there.