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Old 11-19-2011, 07:03 AM
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HiFiCanada HiFiCanada is offline
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Join Date: Jun 2009
Location: Canada
Posts: 84
Electrolic cap backwards?

Just have a queston, are the electrolic capacitors supose to be pointing that way? The schematic does not tell me were to + should be wired to. With my limited experence, I think it's wrong. If the volume is turned up it does not affect the hum that much.
I touched the grid of each tube and the only tube that makes a sound out of the speaker is the audio the 12SQ7. I did switch all the tubes , and that did not change anything. The 1000 ohm 2 watt resistor`gets hot fast and it is to hot to touch.
The 40 Uf is wired from the power swith to tube socket 12SA7 pin S and the 30uF is wired from switch to the rectifier tube, pin K.
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