I have a Cenco 79552 high voltage power supply for tubes and I am looking for a schematic so I can recap it. Can anyone help me find one?
If it works as-is right now, then you can do that. It's best to replace them one at a time. Start with the largest,
highest voltage capacitor, usually the one just after the rectifier tube. Be careful about polarity.
If you replace several at a time and have a problem, then you don't know which one it is.
If it doesn't work at present, best to carefully check it out first.
highest voltage capacitor, usually the one just after the rectifier tube. Be careful about polarity.
If you replace several at a time and have a problem, then you don't know which one it is.
If it doesn't work at present, best to carefully check it out first.
The unit is nonworking as two resistors were open. The unit does not use a rectifier but pairs of 1n2071 diodes. I have ordered all the electrolytic capacitors and the two resistors which I hope fixes my problem.
Thanks for the remindeer, I have a Variac so after the repairs I will do that. This supply has a lot of capacitance, 2- 90uf, 2-40uf for the power supply but no tube rectifier and it has 12 diodes hooked up as 6 sets of two in series. I have a turret board to mount the new axial caps on as the originals were single capacitance can caps which are pricey and harder to locate than the axial ones.
Due to the age of the components I think I will replace all the diodes with modern equivalents. The old diodes were rated for 600v at .75A and I ordered rectifier diodes rated 800v at 1A.