Got one!

[Jeff]

This set has a secret, though I'm sure you can already tell what it is...

[Dude111]

Wow just looking at the first pic I can tell!!

She is beautiful..... Good for you Jeff!!

[Jeff]

Originally Posted by Dude111

Wow just looking at the first pic I can tell!!

She is beautiful..... Good for you Jeff!!

Yeah thanks, don't think I've ever been this smitten by a piece of wood before!

[jhalphen]

Hi to all,
Hi @Jeff,

i'd vote for a CTC-5 or later 21" roundy color installed in a CT-100 cabinet.
correct?

The giveaway is that the CT-100's original CRT (15GP22) has a flat screen suspended inside the tube and recessed from the faceplate.

Best Regards
jhalphen
Paris/France

[Electronic M]

Originally Posted by jhalphen

Hi to all,
Hi @Jeff,

i'd vote for a CTC-5 or later 21" roundy color installed in a CT-100 cabinet.
correct?

The giveaway is that the CT-100's original CRT (15GP22) has a flat screen suspended inside the tube and recessed from the faceplate.

Best Regards
jhalphen
Paris/France

There recently on Facebook marketplace was a CT-100 cabinet with BPC guts fitted. Kinda blasphemy IMO, but if it's the only way you'll ever afford a CT-100 and it makes you happy...

[Penthode]

Originally Posted by jhalphen

Hi to all,
Hi @Jeff,

i'd vote for a CTC-5 or later 21" roundy color installed in a CT-100 cabinet.
correct?

The giveaway is that the CT-100's original CRT (15GP22) has a flat screen suspended inside the tube and recessed from the faceplate.

Best Regards
jhalphen
Paris/France

I'd like to narrow that further. I'd vote a later 21" round CRT with the CTC2 chassis in a CT-100 cabinet. Would a glass CRT fit?

[jhalphen]

Hi to all,
Hi @Penthode,

wouldn't a CTC-2 (original CT-100 chassis) need important modifications to drive a 21" roundie (21AXP22, 21CYP22,...) ?
More H deflection power, more EHT (21 kV instead of 19kV), different Focus voltage and much more sophisticated Convergence controls.

@Jeff: what chassis composes the "innards"?
CRT type?

worst case: it's a AI photo creation. The strange "Halolight" illuminated bezel in the color bars photo looks mighty strange.
Proof-of-the-pudding would be genuine chassis photos at rear of cabinet + CRT label.

Best Regards

jhalphen
Paris
France

[Electronic M]

Originally Posted by jhalphen

Hi to all,
Hi @Penthode,

wouldn't a CTC-2 (original CT-100 chassis) need important modifications to drive a 21" roundie (21AXP22, 21CYP22,...) ?
More H deflection power, more EHT (21 kV instead of 19kV), different Focus voltage and much more sophisticated Convergence controls.



Best Regards

jhalphen
Paris
France

RCA sold a factory CTC-2 chassis that was modified to drive a 21AXP22 (and compatible with the all glass types) the CTC-2B (combined with the CTC-3 convergence sub-chassis) found in the 21" RCA 21CT55....Which was basically an emergency stop gap between the CT-100 and CTC-4 to deal with the 15GP22 being obsoleted by larger tubes.

I highly doubt a rarer (and IMO better) 21CT55 got scrapped to make a franken CT-100.
It's likely the OP bought that cabinet that was gutted and stuffed with a BPC.

I've mentioned this before in various topics, but you can drive a color test jig off a CT-100 (I recently saw someone do so in restoration photos)...If I had a CT-100 with a bad CRT what I would do is look for one of the first 13" inline test-jigs sold to repair shops that still supports tube sweep chassis, but doesn't require dynamic convergence signals, then build a faux CT-100 inner mask to improve the illusion....It ain't as good as a real 15G but anything that allows you to experience the original chassis in operation is an improvement over a full gutting and installation of a BPC.

[Jeff]

All very good guesses!

Electronic M hit the nail on the head, It was retrofitted by a prophouse.

The seller, Jimmy Ray Pickens, got it on a movie set he was on, they didn't use it in the movie, I can't remember what movie he said it was, but maybe it's on his IMDB. (The movie was set in the 50's, no duh) As for the weird colors, the photo with the color bars was really dark, so I brightened up the rest of the photo while keeping the color bars the same brightness, albeit very crudely. Ironically, the crt for the bpc (I think it's a 94' sharp) they used was made in USA, (A48AAB26X)

They glued the tiny speaker from the sharp into the cabinet, and just for the heck of it I put in a speaker from a late 50's rca tv that fit right on the original mounting bolts and hooked it straight up to the sharp tv board, and it sounds really good, I didn't think the little sound chip on the sharp tv board could do all that, especially going into an 8 ohm speaker. I hate to admit it but this tv kicks butt as it is, I would never do what they did, but there's a chance this thing may have been destroyed completely if they hadn't done what they had.

Amazingly, it still has all the tags and has "499" stamped on the back and the lid, serial number? RBT4163 is painted in white in the bottom of the cabinet, I don't know if there's anything else that can differentiate it.

I can't say I'm going to build a glass factory and roll my own 15gp22, but this thing definitely gives me the urge to do that. As it is, I have rocker switches for power and volume wired into the holes on the side for convergence and focus, (blasphemy, I know!) and plain old coax going into it, so at least it's doing what RCA would have wanted it to, okay, maybe not, but at least it's doing what I want it to do

[dtvmcdonald]

You could do what I did while my CT-100 lacked a working 15GP22.

I bought a pro (but not broadcast) grade Sony monitor of appropriate size and
devised a small convertor circuit board which used six transistors to
convert the CRT grid signals to 75 ohms, and hooked that to the monitor.
It ran off a wall-wart secreted inside the TV.

I didn't put the monitor in the cabinet, but it would fit, barely. It had a gorgeous picture. The convertor had lower capacitance than the 15GP22. It demonstrated just how good I-Q is with a bright picture.

[Videotechie]

Someone save this test jigs from old tv shops. I wish could of saved some from tv shops years ago.