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    Hum from all inputs HK Nocturne Seven Twenty

    I have a (found) Harman Kardon Nocturne Seven Twenty that powers up but has quite the hum on all inputs. I opened it up for a quick look to see if anything had swelled or was leaking, but I didn't see anything obvious. I am not an electrical engineer by any stretch of the imagination, but have...
    • omegat3
    • Thread
    • 720 harman kardon nocturne vintage
    • Replies: 2
    • Forum: Solid State
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