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-   Early Color Television (http://www.videokarma.org/forumdisplay.php?f=36)
-   -   My new CTC-15 (http://www.videokarma.org/showthread.php?t=269543)

TUD1 09-16-2017 06:37 PM

My new CTC-15
 
1 Attachment(s)
Got this CTC-15 today for only $32. It had the original tube, but it was replaced because I wanted the rare earth phosphor.

http://videokarma.org/attachment.php...9&d=1505601467

Findm-Keepm 09-16-2017 08:30 PM

Sweet! And inexpensive too! :thmbsp:

Celt 09-16-2017 08:48 PM

Good lookin' set!

TUD1 09-17-2017 02:22 AM

1 Attachment(s)
Finally fired up the CTC-15. Check out that incredible picture!

http://videokarma.org/attachment.php...1&d=1505629328

MadMan 09-17-2017 03:08 AM

Noice.

mr_rye89 09-17-2017 11:34 AM

Nice! I've been after something similar for a few months now. I'm still convinced no one in my neck of the woods had color until the solid state era......

also that Futurama subtitle is hilarious :D

old_coot88 09-17-2017 01:01 PM

Great find. As you're probably already aware, the two ground stakes on the far right end of the chroma board exist in two states: either cracked or gonna crack soon. They need to be re-flowed as a matter of course on every CTC-12, '15, '16, '17 and '25.

When they fail, the heaters on the 6GU7s go out, causing the plate voltage to rise. Since the plates are DC-coupled to the CRT grids, this makes the CRT beam current go nuts, lugging down the HV supply. Pic blooms, loses focus and fades out.

Tom S 09-18-2017 08:31 AM

Very nice set. If you have your other tube I'm interested. Have a CTC11 I would like to improve. Thanks

TUD1 09-18-2017 03:02 PM

Had to trade the old tube for the new one.

TUD1 09-18-2017 08:45 PM

Well, I'm fighting my first battle with the CTC-15 already. The CRT keeps randomly loosing filament voltage. I took the back off, inspected the socket and CRT base, and put a drop of Deoxit on the filament pins, and that fixed it. I put the back cover back on, and it's out again.

PROBLEM SOLVED. Had to heat up the CRT pins.

kvflyer 09-19-2017 09:40 AM

Heck, take it back for a warranty claim on the CRT. :D

Looks nice...

TUD1 09-19-2017 01:02 PM

2 Attachment(s)
This is becoming the most problematic TV I've ever owned. I had to fix the CRT filament again last night, and I decided to just leave it away from the wall with the cover off. It was working perfectly fine when I went to bed, and when I got up today, I had no blue, no red, and a whole lotta green. I tried swtching the 6GU7's around, and after that I got no green, and whole lotta purple. So then I go find another 6GU7, and put it in the G-Y/blanker tube socket, and the green was still dead. I'm at a loss.

Electronic M 09-19-2017 01:17 PM

Has the solder ground stakes/traces on the chroma board been reflowed?..If not then you will want to do that.

TUD1 09-19-2017 05:33 PM

1 Attachment(s)
New tubes, clean sockets, solid solder joints, FTW.

old_tv_nut 09-19-2017 05:51 PM

:thmbsp:


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