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Old 26th Jan 2020, 3:09 pm   #61
ORAWA01
Hexode
 
Join Date: Apr 2011
Location: Stirlingshire, UK.
Posts: 407
Default Re: NCX-5 powered by NCX-A keeps blowing fuse

The DC voltages at C1 is 900VDC. But C2 is 475VDC.
Also when from lamp limiter inline to when it is being switched off (letting the full AC flow into the PSU), there seem a bit of arching noise in the lamp limiter plug (maybe from the fuse?). I thought the fuse is blown, but it wasn't.

Anyhow when being switched over to full AC current flow, there is some violent thump noise. And the C2 voltage is only 475V.

The resistor values all seem OK. They are all correctly wired up.

There is a good 12.5VAC from the pin 4 and 6. The PIN out number 11 is 900 VDC.
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