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- - Sony Beta Combo, W/a cataract? (http://www.videokarma.org/showthread.php?t=221579)

Eric H

04-03-2009 11:21 PM

Sony Beta Combo, W/a cataract?

1 Attachment(s)

Here's a somewhat beat looking example of one of those Sony Combos.

Looks like the tube is getting bubbles around the edge.

I don't think I've seen a Sony before with this problem.

Are they a bonded tube?

http://cgi.ebay.com/1975-Sony-Trinit...3A1|240%3A1309

radiotvnut

04-03-2009 11:28 PM

I had a late '70's 19" Sony with a similar problem. The set had many problems and I tossed it.

kx250rider

04-04-2009 11:27 AM

All of the '60s-early '80s Sonys had a bonded tube, but it's rare to see a cataract. It may have been in the sun too long, or in other unfavorable elements. I've seen a few of them with those black bubbles, and it's usually ones stored outdoors (or been in a fire).

It's the same tube as all the other 19" Trinitrons from '73 through '78.

Charles

site123a

04-04-2009 01:55 PM

I heard people call this "screen rot". I've usually seen this happen to old computer terminal's after they've been stored in a humit garage for a long time.

Like these:
http://www.dvq.com/oldcomp/photos2/1k/adm3a_1.jpg
http://sturgeon.cac.psu.edu/~mloewen...HP2647A-1L.jpg

Kiwick

04-04-2009 03:26 PM

Quote:

Originally Posted by kx250rider (Post 2643073)

All of the '60s-early '80s Sonys had a bonded tube

We never had a trinitron CRT with a bonded safety glass here in Europe, maybe it was a legal requirement in the US back then?

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