Quote:
Originally Posted by old_coot88
Have you confirmed that the CRT is getting high voltage?
BTW, I remember that resto thread.  |
Well, I did confirm the metal cone of the tube was getting high voltage, with a quick touch of the metal cone...
Is it getting the PROPER high voltage? Not sure yet.
I had purchased an old time do-it-yourselfer type repair book a while back, and it does seem to indicate that my condition is related to the high voltage section not working...Dark screen, filament glowing, etc. I switched out the two 1x2 tubes just to be sure.
Since this TV has an FM radio as well, and a switch that shuts off the screen..but not the filament...when one wants to listen to FM, I'm wondering is something could have gone haywire with that switch. I noticed that when I switched it to FM tonight, the FM sound would drop off. Working the switch some brought the FM sound back up, I suppose it's possible that it's not turning the screen back on when it's switched to TV.
From what I've read, the "getter" turning white is a telltale of the tube losing vacuum...I'm going to have to remove the deflection coil to get a clear view of the "getter", as from what I've seen, it's up close to where the neck meets the cone. It looks like I can see part of it at least, and it still looks dark, not powder white.
I'm puzzled. I suppose it's very possible when the bakelite "base" came off the neck of the tube, one of the wires pulled and broke the seal...but from what I've read, along with the "getter" turning white, the filament wouldn't last long if the vacuum was lost...