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RE: a little more Help

Posted by J Corner (A) on January 15, 2014 at 01:39:37

In Reply to: RE: Pre-Amp Kit 2.0. DC in Output, Help posted by Vincin on January 14, 2014 at 01:36:26:

Thank you very much Vincin.
,I do not know too much about these things.The Line Stage Board is quite simple, it has several resistors, the two ECC82 valves and three capacitors per channel:
1- 0.47 uF - 400V MKT big golden AN Copper Foil paper in oil and connected directly to the valve's plate.
.2- 470 uF - 16V Electrolytic connected directly to the valve's cathode.
3- 100 uF - 450 V Electrolytic connected to ground.
I guess the bad ones are the No. 1 ???
One channel has ~2 DCV output the other one ~10 DCV output!!!.
I measured the capacitors with my capacitor tester and seems okey. Are these DC leakings detectable with these tester ?
Thank you again.

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