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Old 01-08-2024, 01:10 AM
Electronic M's Avatar
Electronic M Electronic M is offline
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Join Date: Jan 2011
Location: Pewaukee/Delafield Wi
Posts: 14,820
Messing with a beat up Zenith CCII 25GC50

So just over a week ago I went on a misadventure to pickup what was described as a nice working free CCII and for a friend. The uuuuum entity(?) I picked it up from gave my whole family the dreaded coronabeer virus...Ma's blind in one eye, I'm half deaf in one ear and 90% of the rest is ringing in that ear (it's like someone fired a gun next to my head), and if Dad could just develop a speech impediment we be like the proverbial 3 monkeys they make statues of...
I'm still not well but I no longer feel so hellishly bad that I can be talked into giving up bench time.

Anyhow I didn't care to examine the set or interact(beyond the bare minimum)with the strange entity that had it so after getting the TV home and assessing/reporting it's condition to the person I got it for we came to the conclusion that the plague infested thing (once you are no longer he or she and engage in germ warfare against me you loose the privilege of having me think of you as human) I got this TV from should have left it on the curb they found it on...I should not have wasted the gas either.

So now I'm stuck with the worst example of a CCII cabinet I was eventually hoping to find a better example of... I'm half tempted to scrap it but I'm going to give it a chance at life first.
It's a remote Zoom equipped upright chassis. There's audio and HV but not much else... Screen will light for an instant when power is switched off. I figured out that cathodes are about 50V high, discovered I can get a line if I flip the service switch to service. Then with the switch in normal mode I tried to unplug the cathodes and learned that doing so will give me a horizontal line...so I have both bad gun bias and a dead vertical.

Does anyone know if a known good 9-147 vertical module from a newer 23KC45 parts CCII will sub for the 9-92 in this set? Also would the video modules that feed the CRT interchange?
I'd like to avoid component level work for now, get a picture on it with the bare minimum of work.... I'd prefer to minimize contact with this biohazard until I know for sure I'm not scraping it (= I get a picture on screen).
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