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Old 12-28-2007, 12:51 PM
RCAkid's Avatar
RCAkid RCAkid is offline
Respect the tube!
 
Join Date: Jan 2007
Location: Oklahoma City, OK
Posts: 213
That CTC-15 Combo is Actually a CTC-16

OK, here is an update on the combo in TX.

Brought it home on Wednesday. Stereo works very well for its age and for not being restored. The turntable works as well. The tv on the other hand....

We had all hoped it was a CTC-15, but alas, it is a CTC-16AH chassis. Which is not a bad thing...it is still a roundy, just hoped it would be a bit older. The good news is that it doesn't seem to have had a ton of repair work done on it. All interlocks and screws are in place and not a bunch of junk parts inside the set or scratching of the wood base the chassis sits on. The bad news is, when it went, it may have gone out big.

Ok, brought the tv up and it looks like all I have is filament voltage, which is a good thing at least. It would seem that the low voltage power transformer is somewhat functional or at least part of it. That is the extent of the good news.

I know I need to go through the power supply and begin a recapping job and check all tubes, but here is what I also know. I suspect the flyback is cooked. It has the smell of being quite hot and while there isn't any wax drippings, there is a good bit of bulging and some cracking of the rubbery coating on the windings. While there doesn't appear to be any arching marks, it just doesn't look "right" if you know what I mean. I need to get the flyback tester out and check the windings but something big is dead in this chassis.

Additionally, the filament on the 6JE6/6LQ6 does not light. The tube is still under vacuum and the getter flashing is still in tact. I cannot detect any filament on the focus tube and the 6BK4 is not lighting either. All other tube filaments light including the CRT's. It is very apparent that there is no HV.

I do have a working CTC-16X chassis and a working CTC-21 chassis, both of which are pretty close to the CTC-16AH with the 16X obviously being closer, so I am somewhat familiar with this complicated chassis. But I have not had one in this level of failure before.

Any ideas of where to begin (aside from the power supply caps and getting the schematic) would be appreciated. Also, any ideas on where I can get a Fly for this set would be appreciated as well.

Thanks!
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