URGENT-Get Your CRT Tubes Rebuilt Soon!

[jhalphen]

Telefunken pre-war CRT, 2 last pictures

[John Marinello]

Originally Posted by jhalphen

Hi to All,

On the topic of CRT rebuilding, over here in Europe we are not sitting on our butts doing nothing!

Witness, for instance this rebuild by French Co. RACS of a very rare pre-war Telefunken tube model RFB/VI-1 for our friend Eckhard in Germany.

RACS gave me permission to post these pictures, so here they are.

Rebuild was routine, except for the electron gun which the Lab commented "Had the complexity of a "Rube Goldberg" device": successive interconnections of focussing grids in the sequence G1-G2-G1-G2-G1-G2

The gun was entirely rebuilt, using the original metal electrodes which were remounted in a "copycat" entirely new gun.

Other interesting comments: the supplied tube was down to air, so of course it was cleaned out to all transparent glass then new P4 phosphor was applied. RACS commented that the internal side of the faceplate was slightly damaged by the many years the CRT had been down to air, so minute internal surface irregularities can be seen (with your nose on the screen!) after recoating.

And, oh yes, the CRT glass is Pyrex and rebuilding involved the now mastered art of fusing "salami-slices" of different glass softness to match Pyrex to soft glass.

Each picture is named with the proper step description in the rebuilding sequence.

Next step in the project is "bring your dead CRT to the ETF Convention" May 1-2-3 for a bulk shipment of 10-15 tubes to France to save on shipping costs.

Best Regards

jhalphen
Paris/France

Looks like there's a metal tube in the background, are they having good luck rebuilding those?

Also, can they aluminize tubes, and would a super-bright picture be somehow undesireable on a prewar set?

If they can aluminize tubes, how about metal CRTs? I heard that it was a difficult process due to the tight corner formed at the faceplate/cone bond. The specs on the 19AP4C states aluminized, but I've never seen one.

[electroking]

I understand Hawkeye will send you a proper (empty) box for shipping your
tube on request (I believe I saw this on their website). Good luck.

[vintagecollect]

Anyone can pack a CRT with some info, I'll do some pics of a CRT box a company did for a tube of mine 2 years ago

[rcaman]

5 or 6 years ago i called scotty about the 21fjp,s he said he had only 4 or 5 guns left and there would not be any more. i bought a gun assy for $125.00 now he seems to have plenty he is a damn lier. i would not trust him as far as i could throw him. steve

[Steve McVoy]

I don't know why you assume that Scotty lied to you. At that time he probably only had a few left, but they have been surfacing from various places since then. I've never had anything but honesty from Scotty.

[Dan Starnes]

I need to get my Predicta Holiday CRT to him, good idea on the tax return, that is what I will do with mine.
Dan

[John Marinello]

Originally Posted by Dan Starnes

I need to get my Predicta Holiday CRT to him, good idea on the tax return, that is what I will do with mine.
Dan

What CRT does the Holliday use? 17 incher?? If so, I may know someone who has an NOS one.

[John Folsom]

Steve McVoy is correct. I have dealt with Scotty in person, visited his business, and watched rebuild tubes. Scotty is EXTREMELY honest. Four or five years ago, when I first became involved with Scotty, he indicated that his supply of 21" round CRT guns was very limited. But he has since found a source of supply of new-old-stock guns, and now there is an ample supply. So this exonerates Scotty. He was not, and is not a liar. Shame on you for calling him one.

[ohohyodafarted]

Same what John Folsom said!

[bluenorm]

Long live Scotty and his business

[NowhereMan 1966]

Originally Posted by bluenorm

Long live Scotty and his business

Mega-Dittoes to that one!

[rcaman]

so you are calling me a lier. he said there would be no more period. he lied he f$$king lied. steve

[zenithfan1]

Originally Posted by John Folsom

Steve McVoy is correct. I have dealt with Scotty in person, visited his business, and watched rebuild tubes. Scotty is EXTREMELY honest. Four or five years ago, when I first became involved with Scotty, he indicated that his supply of 21" round CRT guns was very limited. But he has since found a source of supply of new-old-stock guns, and now there is an ample supply. So this exonerates Scotty. He was not, and is not a liar. Shame on you for calling him one.

Steve, did you read this? Maybe at the time when you talked to him, he thought there were going to be no more guns. He later found a source for them. Now there are guns. That does not make him a liar.

[Steve McVoy]

Steve, no one is calling you a liar. I think the explanation you got from me and from John Folsom explains why Scotty told you there were no more guns.