hum on the output

  1. Z

    Harman Kardon PM655 hum in both channel

    Hi Guys, I have a frustrating problem with the PM665 amplifier - a 50 Hz hum at the output that doesn't change with increasing the volume, and is equally audible on both channels. The level is low but audible in silence at a distance of 1-1.5 m. Taking into account the above, it means that the...
    • zlatko13
    • Thread
    • harman kardon hum on the output pm655
    • Replies: 8
    • Forum: Solid State
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