CTC-15 Combo

[ChrisW6ATV]

Originally Posted by robdjf

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]

Originally Posted by robdjf

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.

[dieseljeep]

Originally Posted by ChrisW6ATV

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]

Originally Posted by dieseljeep

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]

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]

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

[bgadow]

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]

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

[Eric H]

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]

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]

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]

Nice Pecan? cabinet!

What type number is 21" Black Matrix?

[walterbeers]

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]

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]

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.