CTC-21 combo

[DaveWM]

a buddy got a CTC-21 combo, nice style cabinet power tuning (vhf goes down vertically). has a decent SS tuner amp that the TV audio goes thru, which is nice. Speakers are a HUGE oval must be 15" by 9" then a mid and a couple small tweets, no horns though.

short on vert about 2" tried a new tube, but my guess is a open cathode bypass cap.

at 1st it had very low contrast and no color. I sub in a few IF and video amp tubes and got a decent pic, better but still lower on contrast than should be. I did not try a new RF tube (nuvistor), but I figured it was ok as there was no snow.

color would rainbow, after trying several 6GH8's I was able to get a color lock but not sure if its permanent (would go out of lock then I would sub some more 6GH8's and it would come back).

CRT was weak on all guns (one gun was just in the good, the others were in the bad on a CR-70 sencore), has a real bad cateract, (molding, brown etc..)
worst I have seen.

25AP22. I picked up a 25VDEP22 today, got home and duh it was a NOS but had a bad cateract (I did not even check) oh well. I am not sure it would fit anyway since I think the 25A is really a 23v size. The 25V I got tested very good for emissons and cut off and tracking. Maybe someday I will try my cat removal skills on it, but for now its going in the attic.

The plan is to replace half dozen or so eletrolytic caps (not the cans, I will test them 1st) and then check around that 6GH8 tube for out of spec resistors. I suppose it could be a weak crystal, but the resistor check out is easy.

if anybody has a 23v they would like to part with, let me know. This guy really wants to put the new tube in it, and I am not real sure I want to try a rejuv unless I have a backup tube.

I think I really hooked him on the retro tv after he came by and saw my meager collection.