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Sony badged Setchell-Carlson U-903 chassis monitor
Perhaps one of the more interesting unrecognized sets at the ETF was a 19" set in the silent auction badged and sold as a Sony. A look in the back revealed it is a Setchell-Carlson made deltagun monitor. I've wanted a S-C color TV or monitor since I first learned they made color sets. I was the only one who seemed to appreciate it for what it was, (Nick knew what it was, but wanted it for parts ).
The Sony name on it looks original so I'd guess Sony had S-C make them a big screen color monitor for their early VTR lines back before they were importing big screen color sets. I don't think I'll see another S-C monitor with Sony badging on it in my lifetime. Date codes and scribbles seem to indicate this monitor was made in 1968. As you can see it was stored poorly for a long time. I had to hit the pencil box hinge with penetrating oil to budge it from it's ajar position. It's CRT is the strongest testing color CRT I've seen. I've begun restoration on this set (will post pictures soon). All caps it needs that I have on hand have been changed, and I've brought it up on a variac, but there are problems. The focus coil is either a replacement or at least has been hacked into an aftermarket extension cable....On power up as soon as the H output tube warmed up (socket was dirty so I had to wiggle it to get it to light) the focus coil began to burn up violently. It quickly began arcing smoking, and burning. The screen did not light. I really need a schematic for this set or the closest production TV chassis to figure this out.
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Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 |
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That's a pretty interesting find. Does that chassis say U903? I have a SC rectangular color set from the same year. I'll have to go see what chassis mine has. I think it has a few transistors mixed in with the tubes.
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I looked it over. I thought about going for it. But I did not know if I could carry it--or unload it later, and I had already (wisely) spent 150 for the 48-700 set--which I am now PROUD to own. It was just a monitor--do not know if it had sound or not--and needed a LOT of cabinet and chassis restoration--besides just electronic repairs. I decided to let it go tom someone who wanted it more.
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I'm pretty sure it is a U903, but it could be a U803. There are 2 transistors in mine, they are in the underside of the monochrome video module which sits next to the power transformer/supply module. One sad problem is that all of the modules save for the HV module are completely missing their module number stickers.
There is no tuner, IF or sound modules on this, and honestly I like it that way. Most sets I find have audio alignment issues and until I learn TV alignment they simply will not sound good...So most of my sets are used as video only monitors with a separate (often tube) amp and speaker system anyway. I've never had a focus coil (that is what I believe it is) melt down like this before so I'm not sure how I should deal with it. Here are some more pictures of it.
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Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 Last edited by Electronic M; 05-06-2016 at 06:17 PM. |
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Very interesting set. Sony also sold a re-labeled 18/19"
tin can Admiral all tube set in the early 70's. This one was a consumer set with ins & outs added. Still had tuners IIRC. The add on was also US built but obviously of very low production, the PCB almost looked home made. Strange they used Admiral & not one of the better brands. Do the inputs look like SC built or are they built elsewhere. If they are SC then I would guess they also sold this under the SC brand. 73 Zeno |
Audiokarma |
#6
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#7
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I still want it for parts, but since you bid on it while I was too busy rebuilding tubes to return fire I'll just charge you double for CRT rebuilds in the future...
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Quote:
It is like being at a cat shelter auction and bidding on a cat only to realize the Chinese lady near by, bidding against you is licking her lips and debating how to cook it.
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Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 Last edited by Electronic M; 05-06-2016 at 09:58 PM. |
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Quote:
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Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 |
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I'll have to dig it out later. There's actually 3 video inputs and a sync input. Each input has 2 Jack's that are shorted together so you can Daisy chain multiple monitors to a single source. There's an input select switch and a sync internal/external switch. That's all I can remember on the road presently.
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Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 |
Audiokarma |
#11
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Looks like the 3 sets of video in jacks go to the front panel input 1-2-3 select switch. And I'm pretty sure I see a fourth shielded cable coming back to the video module pin 4 (bottom side of chassis). Thanks to all your pictures I think I got it. Almost too easy.
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