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nocturne

  1. O

    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
  2. dlucy

    dlucy's guide to Harman Kardon Nocturne series 720, 210, 200, 520, 530, 230, 330, 820

    The second era of solid state receivers from Harman Kardon were (what I call) the Nocturne series. This thread is a guide to those models, their specs, and pointers to schematics and restoration threads for each. If you have additional information on any of these models, send me a private...
    • dlucy
    • Thread
    • harman harman kardon hk kardon nocturne
    • Replies: 40
    • Forum: Solid State
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