View Full Version : 71 Zenith 12" B&W


Adam
11-27-2015, 06:09 PM
in an unusually colored yellow plastic cabinet with a tube chassis. It gets a good sharp picture, works as found, as you would expect from a Zenith of this era. When I first plugged it in the sync wouldn't lock, but like every other tv I've picked up recently the problem was just down to a dirty tuner. At least with this one the antenna isn't broken! Pics...

wa2ise
11-27-2015, 09:08 PM
I have a set similar to that one
http://www.wa2ise.com/radios/zenithtv.jpg
I remember having to replace the vertical integrator module (a 3 legged disc) to get the vertical to work right. Been a while, though. This picture was taken before analog TV died.

nasadowsk
11-28-2015, 09:36 AM
They must have made that cabinet style forever. I've seen it in a tube version, solid state / tube hybrid, and solid state / tube hybrid with a circuit board.

dieseljeep
11-28-2015, 10:39 AM
in an unusually colored yellow plastic cabinet with a tube chassis. It gets a good sharp picture, works as found, as you would expect from a Zenith of this era. When I first plugged it in the sync wouldn't lock, but like every other tv I've picked up recently the problem was just down to a dirty tuner. At least with this one the antenna isn't broken! Pics...
The cabinet is probably flame-resistant plastic and was originally white.
I have two Panasonic 9" kitchen color sets, that yellowed rather bad.
The set must be alow hours set, as it has a Clinton CRT and it still is really bright. :scratch2:

Adam
11-28-2015, 08:54 PM
Those vertical integrators seem to be a common problem, I've had them go bad on two other Zeniths. Now I keep a stash of 680pf mica caps around just for that.

I think this really is a yellow cabinet, here's a pic which shows it better.

dieseljeep
11-28-2015, 09:01 PM
Those vertical integrators seem to be a common problem, I've had them go bad on two other Zeniths. Now I keep a stash of 680pf mica caps around just for that.

I think this really is a yellow cabinet, here's a pic which shows it better.

It could easily be a yellow cabinet. In the early 70's, harvest gold was a popular color for the kitchen.

Captainclock
12-09-2015, 08:50 PM
That's about the same color as the cabinet on my Philco Townhouse TV I bought recently... :scratch2:

zenithfan1
12-13-2015, 12:39 PM
These are yellow, I have one like it. It's been running strong for me since 1996 lol.

Marco-nix
12-14-2015, 08:44 AM
These are yellow, I have one like it. It's been running strong for me since 1996 lol.



hum.. your " tv page " isnot online or terminated zenithfan ;)..

Adam
12-21-2015, 05:07 PM
So I cleaned the contacts in the tuner, and it still had the same problem. The sync wouldn't lock in (H or V) until it warmed up a little, then it wouldn't lock in if I changed the channel unless I rotated the tuner around a few times or shook it a little bit. Adjusting the AGC didn't fix it either. Then I swapped out the 4HS8 sync separator tube, and that fixed it. ( I got lucky and had just one new one in my tube stash) Then I tested the old one and it barely moved the needle on my tester... I'll post some more pics after I clean it up some.

Adam
12-21-2015, 10:42 PM
Here it is back together.