Admiral Regent/C322C2 Score!

[SwizzyMan]

Originally Posted by old_coot88

A couple of questions - When you had the tester on it and got those unusually 'good' high readings, were the heaters glowing a nice healthy orange?

If not, was the neck around the gun area getting really, really hot really fast?

Seemed like the typical orange glow. Got really hot after about 10 mins. Hope it's not gassy?

[mrjukebox160]

It does indeed look like getter flash in the base of the tube.

[old_tv_nut]

Originally Posted by mrjukebox160

It does indeed look like getter flash in the base of the tube.

That seems like a very strange location. My rebuilt GE tube has nothing like that, but of course rebuilt means it could have been flashed completely differently from the original.

[SwizzyMan]

Originally Posted by old_tv_nut

That seems like a very strange location. My rebuilt GE tube has nothing like that, but of course rebuilt means it could have been flashed completely differently from the original.

I have seen it in only one other 21ax and that was the one in Ben Moyer's colorcaster.

[jr_tech]

Originally Posted by mrjukebox160

It does indeed look like getter flash in the base of the tube.

It may be just evaporated metal from the 3 heaters... IIRC the getters are in the neck, closer to the screen.

Found a pix... there are 6 stirrup getters arranged in a circle toward the screen from the convergence pole pieces. There are no getters near the base.



Sorry about the poor contrast.

Update: found an article with a better pix of the gun assembly.

http://www.earlytelevision.org/pdf/R...-Kinescope.pdf

jr

[SwizzyMan]

Ok here are the official tests on the CRT. The tube tests NOS! This has to be one of the best testing CRTs I've ever seen!

[Jeffhs]

Originally Posted by SwizzyMan

Ok here are the official tests on the CRT. The tube tests NOS! This has to be one of the best testing CRTs I've ever seen!

That TV either was not used much by its former owner(s), or else the CRT you tested is a replacement for the original tube. I cannot believe a 50-60 year-old CRT can be in such good condition. The set may have been used by a little old lady who only watched it, at most, once a week or less, and had the original tube replaced in the '60s-'70s.

[Philco123]

I recently purchased one of these early, '56 Admiral color roundies in Florida to add to the collection.

[miniman82]

You need to variac the chassis real quick to verify the crt has not gone to air, getting super high readings like that makes me question whether it has gas in it. In my experience an AX that has top of the scale readings on all guns is usually gassy, even the tube in MY COLORCASTER (I bought Ben's set) tests like new, but it doesn't tip the scales all the way on all guns like that one does.

If it is indeed good, you have a winner there. But until you've had HV and a picture on it, all bets are off. Remember: a gassy tube that hasn't yet burned out its heaters will show good readings on test, but still glow purple upon HV application. Hence the only quantitive test is to run it on a chassis, if you get something on the screen it's good.

[SwizzyMan]

Originally Posted by miniman82

You need to variac the chassis real quick to verify the crt has not gone to air, getting super high readings like that makes me question whether it has gas in it. In my experience an AX that has top of the scale readings on all guns is usually gassy, even the tube in MY COLORCASTER (I bought Ben's set) tests like new, but it doesn't tip the scales all the way on all guns like that one does.

If it is indeed good, you have a winner there. But until you've had HV and a picture on it, all bets are off. Remember: a gassy tube that hasn't yet burned out its heaters will show good readings on test, but still glow purple upon HV application. Hence the only quantitive test is to run it on a chassis, if you get something on the screen it's good.

I would like to add,

When I first tested the CRT, it did not test this good at all. All guns tested maybe right above the G on the good scale. It didnt test this good until I let it cook for about 10 minutes at 6.3.

[SwizzyMan]

So I put it on the variac and after maybe an hour and a half I was up to 100 volts and the 6CB5 started to red plate in the middle of the plate (No HV either). The set is missing most of its tubes, but I did have in the HV cage tubes, the damper, the H out tube, and the vertical out tube. I forgot to add the horizontal multiplier tube so that may account for the red plating 6CB5 and lack of HV. Current draw was about 2.5 amps and normal current is 3 amps at 117v. I must say I am very weary of applying full line voltage to the set with all the original filters, but I need to see if the Jug is gassy (Which I dont think it is.)by applying some HV to it. Everything else seemed to be normal, no burning smells and the power transformer only got lukewarm after being on for an hour and a half.

[miniman82]

You can also power it with HV from another chassis, but it would be best to get the native horizontal circuit functioning.

[SwizzyMan]

Aha! Cant believe I forgot the horizontal mult tube! We now have a nice and relatively bright raster with great height and width! This set sure is a winner!

[miniman82]

There you have it, don't you feel better knowing you won't have to search for a CRT?

[SwizzyMan]

Originally Posted by miniman82

There you have it, don't you feel better knowing you won't have to search for a CRT?

A lot better. I would have probably paid close to double what I paid for the set if I needed a new CRT.