Our 46" RCA Model #P46924 will not turn on. It was not plugged up through a surge protector. But I do not remember any electrical storms. We just tried to turn it on and it doesn't even click or anything. Possibly a fuse? If so, how do we change it? Thanks!
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Sounds like there is a hi voltage problem. Those 3 tubes are the most expensive parts to replace if you can find them. I. You can get an estimate for the repairs, but most likely they will approach the cost of a new flat screen smart TV.
More than likely it has bad solder connections on the circuit board. You could try tapping lightly on power supply/deflection boards to see if it makes contact. Usually I find bad solder on those right under where the power cord plugs in, on the bottom of the board. If you have a soldering iron and solder you could save a few hundred dollars in repair costs, but use caution and make sure all power to set is disconnected. Maybe mark each plug as you disconnect them. Hope this helps. Good luck, Russmann.
The only thing I have ever found that would make one of the tubes go out while the others stay on is a small high value resistor on the CRT board itself. It has been a while since I had that symptom but I remember the value of the resistor as 100k or 120k.