• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

hum in pas2

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almog

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Joined 2011
#1
i've just finished placing alps 250k pot for the volume control and eliminating the loudness and the balance control.
when i turn the vc totally counterclockwise (to the left) i get a strong steady hum which doesn't exist while listening to music.
any suggestions what i did wrong and how to fix it ?
thank you
 
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