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-   -   CTC-15 Combo (http://www.videokarma.org/showthread.php?t=254572)

robdjf 06-07-2012 08:28 PM

CTC-15 Combo
 
4 Attachment(s)
I found this on Craigslist in Allentown PA Memorial Day weekend.
Finally got it home today. The crt is a channel master from 1980 and the repair tags are from 1981. Powered up without HOT got sound. The caps were cool after 10 min. so tried with the HOT. I got a picture !!!!!!!
Pulls about 202 mA from the HOT.
Did a quick degauss and fiddled with tuner.

hi_volt 06-07-2012 08:35 PM

Ahhh...hate...yew...

Apologies to Sandy :D

Seriously......very, very nice set. Exactly the kind I'm looking for. Great that its working also. Should be an easy restoration.

ctc17 06-07-2012 08:38 PM

Very cool! As well as cathode current, feel the fly after it runs for awhile. If the horz centering pot is open cathode current will be ok but fly will get super hot. crt looks clean too, what a find.

Tom S 06-07-2012 09:03 PM

Quote:

Originally Posted by robdjf (Post 3037934)
I found this on Craigslist in Allentown PA Memorial Day weekend.
Finally got it home today. The crt is a channel master from 1980 and the repair tags are from 1981. Powered up without HOT got sound. The caps were cool after 10 min. so tried with the HOT. I got a picture !!!!!!!
Pulls about 202 mA from the HOT.
Did a quick degauss and fiddled with tuner.

Very nice set. Hope the stereo is as good as the Tv. Looks like you have some converging to do too. Have fun. I would and did on my set last weekend.

old_tv_nut 06-07-2012 09:48 PM

Quote:

Originally Posted by robdjf (Post 3037934)
I found this on Craigslist in Allentown PA Memorial Day weekend.
Finally got it home today. The crt is a channel master from 1980 and the repair tags are from 1981. Powered up without HOT got sound. The caps were cool after 10 min. so tried with the HOT. I got a picture !!!!!!!
Pulls about 202 mA from the HOT.
Did a quick degauss and fiddled with tuner.

1980 CRT - I'm curious to know if it's black matrix. Beautiful!

Oh ... and ... AHH HATE YEW!

Charlie 06-07-2012 09:58 PM

Wow that's really awesome! I don't think I've come across a crt that new... maybe the newest I've seen was 1978 (and it was weak). I, too, am curious if it's a black matrix tube. Are there any other labels on the tube?

The cabinet looks to be in really nice condition. Looks like you got a good one there. How much did they want for it?

marty59 06-07-2012 11:04 PM

And no UHF either! Congradulations on your find!!

robdjf 06-07-2012 11:20 PM

2 Attachment(s)
I found the tag it was up near the record changer.
Is this a rebuilt tube ?
I can't see the date all that well but it sure looks like 1980.
The paper tag doesn't look very old.
So far that is all the markings I could find.
I did not put my crt tester on it yet.

robdjf 06-07-2012 11:29 PM

Quote:

Originally Posted by hi_volt (Post 3037935)
Ahhh...hate...yew...

Apologies to Sandy :D

Seriously......very, very nice set. Exactly the kind I'm looking for. Great that its working also. Should be an easy restoration.

Thanks

robdjf 06-07-2012 11:33 PM

Quote:

Originally Posted by old_tv_nut (Post 3037945)
1980 CRT - I'm curious to know if it's black matrix. Beautiful!

Oh ... and ... AHH HATE YEW!

Has anyone ever met Sandy ? He sounds like a lot of fun to talk to.:D

robdjf 06-07-2012 11:34 PM

Quote:

Originally Posted by ctc17 (Post 3037936)
Very cool! As well as cathode current, feel the fly after it runs for awhile. If the horz centering pot is open cathode current will be ok but fly will get super hot. crt looks clean too, what a find.

Thanks I will check that.

robdjf 06-07-2012 11:41 PM

Quote:

Originally Posted by Charlie (Post 3037947)
Wow that's really awesome! I don't think I've come across a crt that new... maybe the newest I've seen was 1978 (and it was weak). I, too, am curious if it's a black matrix tube. Are there any other labels on the tube?

The cabinet looks to be in really nice condition. Looks like you got a good one there. How much did they want for it?

They were asking $250 I got it for $175. When I saw the crt in person I didnt mind the price even if the chassis was trashed (its not). I had a feeling about the crt being good and $175 for a 21fj with no catarac.

Charlie 06-08-2012 12:05 AM

The 21GVP22 uses the rare-earth red phosphor and has the anti-glare face plate. If it's a Black Matrix tube, there would be a label identifying it as such. Yes, it sure does look like it says 1980. Hope you find you've got healthy emissions on all three guns. Considering the way your screen shot photo looks, you've got a winner.

marty59 06-08-2012 12:22 AM

I could be wrong here, but I seem to remember that after the mid-seventies the were no more "all new" roundie tubes being produced, and there were lots of "duds" to be had and no real chance of a black matrix roundie. At least according to my memory and literature I've seen.

After reading that label on your tube it looks like a new gun was installed with using other "used" components.

I have seen a Zenith 24NC30 that had an original RE21FJP22 in it. However the G1's were discolored from the extra heat of a brightner and it was toast..

robdjf 06-08-2012 12:41 AM

You think its rebuilt ?
What did they do about cataracs when rebuilding

ChrisW6ATV 06-08-2012 12:46 AM

Quote:

Originally Posted by robdjf (Post 3037953)
Is this a rebuilt tube ?

Yes, based on the label's "renewal" notes. Also, I have not heard of Channel Master as a supplier of new CRTs, but they were a known source of rebuilt tubes. The date is definitely 1980 or newer (but it does look like a zero to me; less likely to be a 6 or 9).

Very nice to get a set that fires right up!

dieseljeep 06-08-2012 09:14 AM

Quote:

Originally Posted by robdjf (Post 3037967)
You think its rebuilt ?
What did they do about cataracs when rebuilding

They had to remove the safety glass before they could put the tube in the oven, as part of the rebuilding process. :yes:

dieseljeep 06-08-2012 09:24 AM

Quote:

Originally Posted by ChrisW6ATV (Post 3037969)
Yes, based on the label's "renewal" notes. Also, I have not heard of Channel Master as a supplier of new CRTs, but they were a known source of rebuilt tubes. The date is definitely 1980 or newer (but it does look like a zero to me; less likely to be a 6 or 9).

Very nice to get a set that fires right up!

Channel Master did build new CRT's as well. IIRC, they called them " Opti-chrome ". I only used to use their rebuilts, as they were better than the locally rebuilt CRT's.

marty59 06-08-2012 01:08 PM

Quote:

Originally Posted by dieseljeep (Post 3038000)
Channel Master did build new CRT's as well. IIRC, they called them " Opti-chrome ". I only used to use their rebuilts, as they were better than the locally rebuilt CRT's.

I thought the same with CM only being a rebuilt provider....Learn something new everyday!

DavGoodlin 06-08-2012 01:53 PM

Not to pile on here but....W O W, what a treasure
Great find Rob it looks like it was really cared for.
That is probably a tube hifi in that unit also.

bgk283 06-13-2012 06:53 AM

combo
 
congrats on a great find, if i had the room, my house would be full of those things, have fun

bgadow 06-13-2012 10:59 PM

At one time, I've read, Channel Master had the most modern CRT manufacturing plant in the USA. There were Channel Master brand TV sets, too, but I've never seen one. I'm sure they use a clone chassis or some such but I'm gonna guess they would have used the all-new C-M crt's?

damen 06-13-2012 11:53 PM

Nice score :thmbsp::thmbsp: The rare earth tube will produce a nice picture next best thing to black matrix.

Eric H 06-14-2012 12:21 AM

Beautiful set, it looks mint!

I have a NOS Channel Master 21" sitting in my closet, it's also dated 1980 if I recall correctly, could even be newer but definitely 80 or later.

I've never fired it up, hopefully the shadow mask is good after shipping it, I managed to break the safety glass so that has to be removed.

sampson159 06-14-2012 08:04 AM

we sold channel master crts back in the 60s and 70s.very good tubes.i dont think we ever had one come back and we were very happy with them.i had a beautiful channel master in my combo unit at the store that got vandalized.

truetone36 06-14-2012 09:53 AM

I have a NOS 21" CM B/W CRT out in the shop, so I know they produced new CRTs as well as rebuilding used ones.

NewVista 06-14-2012 09:00 PM

Nice Pecan? cabinet!

What type number is 21" Black Matrix?

walterbeers 06-14-2012 09:12 PM

Channel Master CRTs, didn't produce quite as sharp of a picture as some of the other brands, however their crts seemed to last forever, as apparently the design of the electron guns were such that the beam current was more limited. Just hope the flyback doesn't smoke out, as that was a problem with a lot of those RCAs. Keep the cathode current as low as possible on the 6JE6/6LQ6 so that fly doesn't overheat. (ps, Yes, several of those wax coated flybacks even caught fire).

DavGoodlin 06-15-2012 11:06 AM

I did see a CM set.

Early 70's table model tube set possibly made by Toshiba and looked alot like the Sears non-Wells-Gardner Medalist.

I also had a CM 21FJP22 in my CTC16XL that lost its red. One blast from the Heathkit Rejuvenator and it was back, lasted and looked super! Then the neck just broke off (not due to HV too high), a mystery to this day.

bgadow 06-16-2012 10:40 PM

My CTC-15 had a C-M tube. It worked when I found it back in the early 90s but had cataracts and a vertical issue, both way beyond me at the time. It sat unused until I joined VK and learned how to fix cataracts. Before tackling it I checked the crt and found that, while in storage, it had gone to air. No physical signs, nothing looked broken, but the filaments barely glowed and all 3 burnt out while I watched.


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