Quote:
Originally Posted by Hcompton79
I picked up this TV today it used to belong to my great grandmother, Its an RCA Victor Model 21-S-510N. It uses a 21 inch picture tube. I am wondering what I should expect when restoring this, as it will be my first TV restoration although I have done a few radios. Any gotchas or unobtanium parts? Also what kind of picture tube is this and is there a replacement out there if bad?
http://www.videokarma.org/attachment...1&d=1453140133
I brought it up on a dim bulb tester and all seemed fine, although I did have to find a 250 watt bulb as the power requirements are large for a set like this. I was disappointed as the picture tube did not light up at first but after leaving it on for about 10 minutes the picture tube became bright enough to watch in average room lighting, I got a raster and sound from my transmitter but I did not get a picture. |
I see it's your first post. You came to the right place.
It probably has a KCS92 chassis, using a 21AMP4 CRT. I just re-worked a set just like it. Not bad to do, but it has many paper caps, that are well past their prime. It's one of the few RCA's that used stacked B+, that is, using the audio output tube as a voltage divider. It's OK, as just about every other TV manufacturer used it.
I wouldn't worry about the CRT, as it needs "waking up" as it's been lying dormant for many years.
