19" Porthole Zenith - Videokarma.org TV - Video

Carmine · #1 12-07-2006, 04:10 PM

I don't know if I've ever shown any good pics of this one (not that these are very good), but the recent thread about the picture tubes re-kindled my interest.

Rear:

Tube:

fujifrontier · #2 12-07-2006, 07:33 PM

that is a beautiful set.

I WANT IT

tvdude1 · #3 01-02-2007, 06:07 AM

I also have this set with a good crt.

tvdude1 · #4 01-02-2007, 06:16 AM

Hello guys, were can you buy the sealer to seal the front of the crt face to the metal bell of the tube. I would hate to see my 19ap4 go to air, any clue?

Tim · #5 01-03-2007, 10:15 PM

tvdude1:

Here is where I got the stuff I used on my 15GP22.

http://www.2spi.com/catalog/vac/vacleak.shtml

I now have more than I will ever need in 4 lifetimes and it has a shelf life. Send me a PM.

everstan · #6 01-04-2007, 12:47 AM

Perhaps you pros could help.
I have the 1951 Zenith 19" porthole with the 24H21 chassis. The flyback rings good and ohms check but the secondary is suppose to put out about 525 volts to send into the 6W4 damper tube. There is about 350 volts of B+ going into one side of the flyback as it should according to schematics but where it should come out as 525 it is about 300 volts. No HV. The only thing I can think of is that when I received this set the assembly the 1B3 rectifier sits on came loose and I don't have it hooked up right. I rewired the socket but I still have that nagging question...what do you do with the wire that emerges from the metal cup the 1B3 rectifer socket sits on? Can someone please open up their flyback cage on their porthole for me.

tvdude1 · #7 01-04-2007, 06:32 PM

Hello again, about this vacuseal, do you buy the brush on type or the spray? The spray on would seem to be messy.

John Marinello · #8 12-10-2006, 03:56 PM

The metal back pictured doesn't look like the right one for that set, it looks like it's too small?? Maybe just because of the pic??

polaraman · #9 12-10-2006, 05:55 PM

I have the same set with the same problem, A bad 19AP4.

polaraman

Carmine · #10 12-14-2006, 04:50 PM

Quote:

Originally Posted by John Marinello

The metal back pictured doesn't look like the right one for that set, it looks like it's too small?? Maybe just because of the pic??

It isn't the correct back for the set, it's just what came with it. Better than nothing I guess.

everstan · #11 01-01-2007, 10:32 PM

Hi Carmine could you please help,

I have the same set and model #.
However when I had it shipped the 1B3 rectifier tube socket sitting on top of the little metal cup which in turns sits on top of the doorknob 500mmf/20K cap all came loose and was just lying there when I opened up the flyback cage. Consequently I am not sure just how that rectifier assembly is set up and your rear photo doesn't show enough detail. My question is; from what I can tell in your rear photo it looks like a short wire between the little metal cup just below the tube socket is going off towards flyback? Can you please tell me just what both ends of this wire hooks to it and also if there is some kind of bracket the whole 1B3 assembly sits on? This cap is suppose to ground at the base of the assembly I thought so what is this mystery wire for? My email is everstan@bresnan.net if could help me with a close up pic of the flyback cage.

Thanks
Stan

Carmine · #12 01-02-2007, 05:31 AM

I could try to take a better picture of the set, but I suspect that someone with more knowledge of the set than me, will respond first.

jpdylon · #13 12-10-2006, 10:49 PM

What chassis does that set use? 24H20?

I'm wondering what the controls on the rear of the chassis are. From left to right i see focus, AGC, (?), horizontal drive,

anyone have the mystery control?

Indian Head · #14 12-11-2006, 11:07 AM

We have one almost exactly like that, except your cabinet looks a bit more deluxe than ours. For instance, there's no lattice grill over our speaker cloth.

The tube is good, but there's a foldover at the top, and other things took priority. Even so, it still is a beautiful design just as furniture.

Ours did come with a Lazy-Bones remote control set-up, although the cord was snipped off. We took the remote motor off the back because it made the set stand too far away from the wall. We kept it, and the handset just in case we wanted to restore it.

That's a nice set Carmine. We'll post a pic of ours in a day or so for comparison.

John Marinello · #15 12-11-2006, 05:02 PM

Quote:

Originally Posted by jpdylon

What chassis does that set use? 24H20?

I'm wondering what the controls on the rear of the chassis are. From left to right i see focus, AGC, (?), horizontal drive,

anyone have the mystery control?

24H21 chassis.

Focus / AGC / Sound take off / Buzz control / Hor drive / Then 2 sliders for Hor lin (top) and Width