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  #1  
Old 02-04-2015, 03:43 PM
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timmy timmy is offline
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well it turns out that the g1 159 v is the red the others are 165v the g2 900-1000v and the cathodes 305-318v
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Old 02-04-2015, 03:54 PM
DaveWM DaveWM is offline
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Quote:
Originally Posted by timmy View Post
well it turns out that the g1 159v the cathodes 305-318v
well there is the problem cut off due to bias of CRT well over 100v
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Old 02-04-2015, 04:01 PM
DaveWM DaveWM is offline
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I would start by trying a new video out to see if you can drop the cathodes down. if a known good tube does not help then you are back to checking voltages.

The g1 seem a little low as well. so checking the difference amps voltages would be in order, does the CRT bias have any effect?
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Old 02-04-2015, 04:05 PM
DaveWM DaveWM is offline
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is this a U45 or an RCA clone?

U45 crt bias pot adjusts the G1 where the RCA adjust the cathodes.
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