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  #1  
Old 02-19-2017, 12:19 AM
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My new RCA CTC-25!

I have literally been awake for 22 1/2 hours as of right now, but it was worth it. I got to go to the SARS swap meet, get some goodies, which I will show later on, and after that, went to collect my RCA GH-759F. Beautiful cabinet, one of my favorites. As usual, we had to take it totally apart to get it home, and I just got it set back up a few hours ago. More to come. I'm exhausted.
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Old 02-19-2017, 01:20 AM
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Noice.
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  #3  
Old 02-19-2017, 01:34 AM
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Kevin Kuehn Kevin Kuehn is offline
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Boy, either that set was kept in an immaculately clean environment or someone did an excellent job of dusting it's insides.
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  #4  
Old 02-19-2017, 08:26 AM
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Yep, it's nice and clean, just the way I like it. I'm sure my friend Danny cleaned it up when he got it. It had a rebuilt picture tube, but we took that out, and I put in a 1969 RCA Hi-Lite tube.
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Old 02-19-2017, 01:59 PM
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Quote:
Originally Posted by TUD1 View Post
Yep, it's nice and clean, just the way I like it. I'm sure my friend Danny cleaned it up when he got it. It had a rebuilt picture tube, but we took that out, and I put in a 1969 RCA Hi-Lite tube.
Boy, that's an ugly looking cat in that TV! Were you trying the old cartoon trick of trying to replace the TV show with your cat by swapping out the picture tube for your cat?

Also the first picture on your thread seems like sacrilige having a Zenith Radio ontop of an RCA TV.

FYI, I'm just kidding around by the way I hope you got that.
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Old 02-19-2017, 02:15 PM
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Ain't my cat. Mother paid $1300 for it. That's more than my car cost. Just got an email from the friend who gave me this, and he said that the Beauchamp has not been out of his basement since the mid 1980's. He told me that he bought the set from an ad in the paper in 1976, and that it was being sold because it had a bad CRT. He put in a different CRT and sold it to a high school friend who was getting married. When buyer got divorced several years later, the ex kept the set for several more years until it was replaced by a solid state set, and my set went back to Danny (my friend) and has been in the basement ever since.
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Old 02-19-2017, 02:22 PM
Captainclock Captainclock is offline
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Ain't my cat. Mother paid $1300 for it. That's more than my car cost.
Wow! Anyways I hope you were able to get my joke either way.
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Old 02-19-2017, 03:32 PM
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There's a fault condition endemic to those sets that you're probably aware of already. If not, it's the two ground stakes on the far right end of the chroma board which go open and kill the heaters on the 6GU7s. They need to be re-flowed, and this should be routine on every CTC-12, '15, '16, '17 or '25 you ever run into.

What happens is - (since the 6GU7 plates are DC-coupled to the CRT grids), the plates go too positive, driving the CRT grids positive, which runs the beam current full-on, overloading the snot outa the 3A3, flyback etc. Symptoms are - raster blooms, loses focus, then fades out completely.
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Old 02-19-2017, 05:50 PM
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I cleaned the Beauchamp today. Gojo'd the entire cabinet (and it has a lot of cabinet), and used Novus on the mask, and it turned out absolutely beautiful. The picture doesn't do it justice. And I'm using my good camera.
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Old 02-19-2017, 11:45 PM
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Unfortunately, the audio in the Beauchamp just died. I turned it off to leave the room (Incase something broke while I was away) and when I got back, I turned it on, and I heard a loud 60 Hz thump, and that was it. Dead silent after that. Probably the audio out transistor.
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Old 02-20-2017, 12:10 AM
old_coot88 old_coot88 is offline
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Probably the audio out transistor.
Yup. Very common failure on those. Also there's an electrolytic which fails, causing low volume. IIRC, it's in parallel with a low-value resistor going to the emitter.

BTW, congrads on snagging a very nice set.
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  #12  
Old 02-20-2017, 11:48 AM
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Very nice! I had a nearly identical CTC-25, back in the early '70's!
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Old 02-20-2017, 01:36 PM
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I had the identical set in 2012. In all fairness, it had not led a charmed life. The thing had no end of problems and would blow 6GH8s left and right. Ended up parting it out....hated to do it, but the set hated me.....
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Old 02-20-2017, 05:17 PM
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We were a sales/service dealer and sold a boatload of '25s. Biggest beef with 'em was the chincy channel selector/indicator/fine tuning setup. They didn't eat 6GH8s nearly at the rate of the 'short chassis' CTC-19, 20 and their follow-ons.
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  #15  
Old 02-20-2017, 06:14 PM
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Replaced the audio output transistor and now the audio is back.
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