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-   -   Repair Blog of a 1967 Sony Chromatron (http://www.videokarma.org/showthread.php?t=262202)

jhalphen 07-20-2014 04:59 AM

Repair Blog of a 1967 Sony Chromatron
 
Hi to all,

Exciting stuff!

First internal/external photos ever of a 1967 Sony Chromatron color TV.
17 photos so far. Seems to be an all-tube chassis.

The Sony 19C-100 belonging to the Japan Radio Museum has been entrusted to Japanese friend N. Tezuka to make it work again.

Follow the endeavour by reading his blog:

http://translate.google.de/translate...Fvrc-tezuka%2F

Please keep in mind that Google's Japanese to English translation is, well "creative".

Later day update from info received from Japan:

CRT diagonal is 480mm/19"
CRT type is 480AB22
2x EHT rectifiers used: 1 for HV and another 1 for MV* (6.3KV) and FV* (4.1KV).
Also thinks it's a 3 gun tube, therefore not a true Chromatron.

*MV: Medium High Voltage
*FV: Focus Voltage

The Sony Museum Chromatron TV is a 19C-70 and this one is a 19C-100, therefore a new unidentified model with a smaller screen.

Best Regards

jhalphen
Paris/France

JBL GUY 07-20-2014 06:34 AM

Very interesting.

Thank you for the link.

Sandy G 07-20-2014 07:39 AM

Jerome, I DON'T know where you find all this stuff, but I'm VERY glad you do, & that you selflessly always share it w/us !

jr_tech 07-20-2014 01:42 PM

Cool! Thanks for posting!
I don't get why they would be using what looks to be a delta gun in a Chromatron design... very strange!

jr

jbattles 07-20-2014 02:34 PM

1 Attachment(s)
It sure looks like a delta gun to me. A lot is lost in translation. You can see it the picture. It would be neat to find one the us a tube Sony would be cool, but it would way 5 tons and would have to use o.e.m tubes from Sony.

Jon A. 07-20-2014 05:48 PM

Even if it's not a true Chromatron, a delta-gun Sony must be quite a rarity in itself.

Holy frig, 330 watts for a 19" set? That's quite the power suck.

colorfixer 07-20-2014 07:51 PM

The convergence clover gives an indication of a delta gun, but notice the close-up of the tube face that shows the phosphor stripes.

There are two high voltage connections on the bell: take a close look at the photo that shows the rear of the tube, there is a high voltage lead on the left of the tube, and a smaller one on the right!

Jon A. 07-20-2014 07:57 PM

So much for a CRT sub for one of those.

Sandy G 07-20-2014 08:20 PM

I remember seeing a Sony color set & BIG-@zz VCR on an audio-visual type roll-around cart-The metal kind schools used, prolly 1968-'69, but the TV was NOT a Trinitron... Looked more like a Zenith or RCA table model, was about 19-23" whatever they usually were. This was at Bondurant Bros. Co. in Knoxville, they were the Sony distributors for Knoxville & environs back then. I DON'T think Sony ever re-badged somebody else's sets, at least not in the "Consumer" line, but MAYBE they did in the A/V business... Anybody got any ideers ?!?

andy 07-20-2014 09:18 PM

...

Jon A. 07-20-2014 09:45 PM

Notice the neck too, looks delta to me.

NewVista 07-21-2014 01:59 AM

Not enough socket pins for triple gun?

dieseljeep 07-21-2014 10:14 AM

Quote:

Originally Posted by Sandy G (Post 3110422)
I remember seeing a Sony color set & BIG-@zz VCR on an audio-visual type roll-around cart-The metal kind schools used, prolly 1968-'69, but the TV was NOT a Trinitron... Looked more like a Zenith or RCA table model, was about 19-23" whatever they usually were. This was at Bondurant Bros. Co. in Knoxville, they were the Sony distributors for Knoxville & environs back then. I DON'T think Sony ever re-badged somebody else's sets, at least not in the "Consumer" line, but MAYBE they did in the A/V business... Anybody got any ideers ?!?

I the early days of B/W, R-R Sony VTR's, Sony had Motorola build a 23" B/W monitor with the input connector for their VTR.
That was in the mid-60's.
The set was badged "Sony", but it was obviously a Motorola.:scratch2:

Jon A. 07-21-2014 12:53 PM

Quote:

Originally Posted by NewVista (Post 3110434)
Not enough socket pins for triple gun?

More wires visible here, and an unusual horizontally-mounted convergence panel up top.

I just realized, this is the first color CRT I've seen with the 2nd anode connector on the side, and the first from this era I've seen that lacks an external degaussing shield.

jbattles 07-21-2014 06:27 PM

The anode button on the right everyone is talking about does not look right to me its hard to tell but it just don't look right.


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