1971 Sony CVM-110UA Transistor Video TV Monitor (pics)

[Robb]

Picked up this 1971 Sony CVM-110UA Transistor Video TV Monitor at an estate sale for dirt cheap in late October 2013. I had not tested it, so I took a chance on it. Brought it home and tested it and it turned on. Essentially it works, but needs some contact pots cleaned. It had woodgrain vinyl covering on it, but I removed it.

[Findm-Keepm]

Several years ago, I had the same unit, along with a camera, the mount, the camera power supply, and the cables. It belonged to a shrink that used the setup with a U-Matic recorder to record therapy sessions. He retired and gave it all to a friend, who gladly gave it to me - "Black and White UGH" was his comment. Nice little set, with crisp pictures. I downsized my already small collection of sets and gave it away to a friend's son. Camera/cable/power supply went with the set, but I kept the mount, shortened the bar, and mounted it with a newer camera at my church.

I found the schematic only for the set in Sams - it was a supplement to a set.

Cheers,

[Robb]

...........

[Robb]

Here's a video I posted: http://youtu.be/LPgpJ36THMY

[Sandy G]

Looks MUCH better w/o the tacky woodvinyl...(grin)

[NowhereMan 1966]

I have that same set too. I think it came out in 1969 or so because I saw an ad for it in the Life Magazine for the week of the Apollo 11 Moon landing.

[Robb]

Originally Posted by Sandy G

Looks MUCH better w/o the tacky woodvinyl...(grin)

I agree 100% !

[Robb]

updated pics

[Duane]

Originally Posted by Robb

updated pics

Outstanding pictures. What did you take them with?

[Robb]

Fuji X20 camera

[tmart]

I have an extremely similar model, Sony CVM-920U.

Unfortunately my model doesn't have the UHF/VHF screw inputs. So I made an adapter for COAX from the large diameter on this set to common small diameter, but when I input my analog cable, or RF modulator, there is always very grainy images. I can only get any image at all when I don't contact the outer coax shielding, only the middle signal wire can touch to produce an image.

Not trying to hijack this thread, I was just wondering, is there something about these coax inputs that are different from modern coax signal? Can someone reference me to the specs.

Also, what is the pinout to the strange I/O port with 8 little pins?

[zeno]

Not to worry, no hijacking.......
The original adapters were small 300-75 ohm matching xformers.
IIRC it used a 3.5 mm mono. The outer is ground & the tip is
75 ohm unbalanced, what every VHF tuner uses even if it has
twin lead terminals. If there are no separate UHF terminals there
is also a splitter in the set.
The connector is standard composite video & audio for use with
a camera, U-Matic or reel to reel VTR. Very common in the day.
The consumer model is a TV920U. It does not have the extra inputs
& switch.

73 Zeno

Originally Posted by tmart

I have an extremely similar model, Sony CVM-920U.

Unfortunately my model doesn't have the UHF/VHF screw inputs. So I made an adapter for COAX from the large diameter on this set to common small diameter, but when I input my analog cable, or RF modulator, there is always very grainy images. I can only get any image at all when I don't contact the outer coax shielding, only the middle signal wire can touch to produce an image.

Not trying to hijack this thread, I was just wondering, is there something about these coax inputs that are different from modern coax signal? Can someone reference me to the specs.

Also, what is the pinout to the strange I/O port with 8 little pins?

[tmart]

So how come when I adapt a coax cable to this wide diameter, as soon as I touch the outer ground I lose all signal? Is analog cable or the RF coming from my modulator 300ohms? I get a good sound signal and partially fuzzy picture if I only contact the centre tip.

I can send composite (yellow RCA) video in the VTR? Maybe that's my best route?

[Dave A]

tmart, your set looks to only have a rod antenna for RF reception which would match with it's VHF only tuner...no screw terminals. The big UHF connector (as us old guys used to call it) is only for a 75ohm signal from a video source as it has a termination switch which is a video only function. And I see no audio-in connectors. (Correction...there is a 1/8 mini above that is the audio in that I did not spot). You can use any known adaptor for the UHF as long as it is a video source. No RF signals need apply. How your set sees fuzzy pics feeding RF to the UHF is unknown to me unless there is some interaction between the UHF and the rod. I suspect your RF modulator to the UHF connector is spraying stray RF inside the set that the rod sees but not very well.

The "tv out" connector is whatever is on the screen again in the video format.

The other connector is an 8-pin EIAJ connector widely used by Sony in the late 70's and early 80's on mostly 3/4" decks and some others later for ease of connecting decks and monitors together with full video and audio. They usually came in 6' lengths.

The 8-pin connector pinout is below courtesy of the always helpful Labguy.

[Electronic M]

Originally Posted by Dave A

And I see no audio-in connectors.

Look carefully at the 1/8" headphone jacks above the UHF connectors....Those are almost certainly the audio connectors.