Zenith console - Page 2 - Videokarma.org TV - Video

ctc17 · #16 06-08-2010, 10:04 PM

Im working on a 20xy1c38 right now and it has almost all the same issues. The most annoying is it acts like the hv regulation is slow. Between different brightness scenes the screen 'bounces'.
It has the pincushion issue and a vert linearity issue about 2 inches down from the top.

Otherwise good picture

DaveWM · #17 06-08-2010, 11:16 PM

yea the pin cushion was the worst it just seems to run out of adj before it gets all of it adj out. there is a RC in the grid circuit of that, not much else that can go wrong. is the pin cushion ok on the bottom? Mine looked ok on the bottom. the Linearity is just a touch off now, only see it in the last 1/2 from the top. I need to touch that up again.

DaveWM · #18 06-09-2010, 02:49 PM

vert is still jumping around, I cycled the norm/serv switch some more, but its still and issue.

there are quite a few coupling caps, a thermistor and various carbon comp resistors in the circuitl. I think I will let in run somemore just to see if use will help it settle down.

Have not tried tapping any tubes yet..

andy · #19 06-09-2010, 03:59 PM

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DaveWM · #20 06-09-2010, 09:57 PM

buzzing, a lot of it that needed constant fiddlling with the buzz pot. it would need to be adj after warming up and even then it was not all that good.

now for some reason after watching it for a few days an hour or two a day the buzz is gone and no longer needs to be touched up.

Geez I wish other stuff would just "get better" like my car....

the volume on this set is still somewhat weak, I am thinking if it has a cathode bypass cap, maybe that is open and its getting too much neg feedback. I have not checked the tubes in the audio so I guess I should start there.

ctc17 · #21 06-09-2010, 11:45 PM

They do get better by running them dont they>?? I still cant figure that one out. The volume is weak on mine too. The buzzing has also got a bit better on mine.
Did you measure you cathode current yet? Mine was 190ma
Post a picture for us?

Great info Andy, thanks! I have run accross those with open resistors.

freakaftr8 · #22 06-10-2010, 12:13 AM

That is a very fine television apparatus you have there!! I would love to shrink myself small and live in the list!
(At least small enough to disable my wife's soap opera addiction)

ctc17 · #23 06-10-2010, 12:31 AM

Thanks! the louvers and off centered crappy channel master crt really bring it all together. The cabinets walls are Masonite, that think dark very hard particle board stuff. Its a bit unique

freakaftr8 · #24 06-10-2010, 12:46 AM

Ahh, yes, but I too have a Zenith, with a Channel Master CRT. Very off kilter as well. Maybe it's your sets long lost brother? Got it from JPDylon in San Diego a few years back.

DaveWM · #25 06-10-2010, 07:05 AM

thats my set but for a french provincal cabinet. did you see how the convergence board is accessable from the front, under the speaker cover, clever guys those zenith engineers.

DaveWM · #26 06-10-2010, 07:21 AM

pics...

AUdubon5425 · #27 06-10-2010, 07:50 AM

So who's the gal riding with Jim?

DaveWM · #28 06-10-2010, 08:27 AM

Lindey Wagner, think it was the pilot RTV just started over again, the early ones are the best. The pilot had a different Rocky, Noah Berry was much better than the pilot episode rocky.

ctc17 · #29 06-10-2010, 12:12 PM

I like your cabinet better. The extra decorative bulk doesnt do much for me. Most of the later tube zeniths I have seen have the convergence there. I wish they could put the focus in front on these consoles.

DaveWM · #30 06-10-2010, 12:18 PM

yes its a very nice cabinet, very clean, understated and solid wood.

Agree the focus should be upfront. That cab style is prob my favorite, it matches that zenith combo I have. I hope to get on that one next.

I think I will need to clean this tuner it keeps requiring jiggling.