Quote:
Originally Posted by jr_tech
Has anybody accomplished a successful rebuild of a 15GP22 ?
jr
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Not for long. I had one re-evacuated by the owner of a tube rebuilding shop in SoCal in the early 80s, and it worked fine for about 6 months, then began to glow purple in the neck and arc internally. It was a leak around the anode ring, I'm sure. The trick was, at the time, to heat it up over a couple days, rather than the several hours they usually used. The owner of the shop was a retired engineer from Hoffman, and he had worked on a project there to build a proprietary tube for Hoffman color TVs so they wouldn't have to use an RCA or a CBS tube; both of which they tried in prototype sets. He also did the only true successful rebuild on an 8" Arvin metal tube for me, as well as several 21AXP22s for myself and others. He sold his equipment to a CRT rebuilder in Mexico and retired in the 80s, and I lost track of him. (Ron Richardson, Dunbar Picture Tube Company. Culver City, CA). If he's still with us, he'd have to be about 90 by now, I guess.
Charles
10-15-2009, 11:26 AM
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