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  #61  
Old 01-05-2010, 01:16 AM
peverett peverett is offline
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Ditto to what Charlie indicated. I restored a 1953 Emerson once and left one paper cap in. This cap was on the AGC line with 4 volts across it. Very shortly thereafter the TV started having AGC issues. Changing the paper cap fixed it. Some have said that you can "reform" old electrolytics. I have also tried that with very poor results in radios. Within 6 months, the radio is humming again. Replace all electrolytics and paper capacitors with modern ones!

I actually know of a person who has a story similar to Charlies about the Comet. He had an antique car with 20 year old tires and tried to drive it to a car show several hundred miles away from his home. At least some of the tires had to be replaced on the trip after failing on the highway. I guess he thought they looked ok-like the paper caps.
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  #62  
Old 01-05-2010, 12:04 PM
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sampson159 sampson159 is offline
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its like changing some of your spark plugs or draining some of the oil.replace all of them.do it right the first time.i ,have done the same stupid thing through the yearsw.change out one cap or a few.guess what happens?
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  #63  
Old 01-05-2010, 12:05 PM
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I'm taking the pic tube to him later today, I will indeed let him to know replace all the caps and lytics.
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  #64  
Old 01-05-2010, 08:14 PM
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Well I found my set on ETF. And tested the pic tube, He put HV to the prongs of the neck and seen voltage shoot to the prongs into the neck and see them in the neck, He said that it should not be doing that.

Little past halfway down,



http://www.earlytelevision.org/21_inch_color.html
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  #65  
Old 01-05-2010, 08:36 PM
DaveWM DaveWM is offline
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lost you on that, the pic tube was tested and there were sparks involved?

I did not think that would happen unless a rejuv was done.
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  #66  
Old 01-05-2010, 09:04 PM
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I think he means used a tesla coil to see if there was internal air glow or sparking, and there was - meaning tube gone to air
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  #67  
Old 01-05-2010, 09:45 PM
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The best way to test a Wax/Paper Capacitor: 1) Take it out of the equipment. 2) Hold it high above yr head, over a metal trash receptacle- 3) Drop it in said receptacle. If it goes "Bangety-bang bang, Tinkety-tink tink" or a variation thereof, it is no good. 4) Leave it there, & replace w/new one 5) Enjoy yr rejuvenated equipment !
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  #68  
Old 01-05-2010, 10:03 PM
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Quote:
Originally Posted by old_tv_nut View Post
I think he means used a tesla coil to see if there was internal air glow or sparking, and there was - meaning tube gone to air.
Yes exactly.
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  #69  
Old 01-18-2010, 02:23 PM
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Any progress to report?
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