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Harmon Kardon HK620 Amp

Discussion in 'Electronic Repair' started by Dynamic Dave, Jul 15, 2007.

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  1. Dynamic Dave

    Dynamic Dave Guest

    Hi, I'm new to this so I hope someone out there can help. I've recentl
    dug out my old Harmon Kardon HK620 Amp that has been in storage. Now
    may have damaged it when taking it out of the box but for some reason
    the remote control won't turn the volume knob as it prevouisly did. Th
    remote works for everything else. Is there a quick fix for this?

    Any help would be much appreciated.

    Thanks,

    Dave
     
  2. Arfa Daily

    Arfa Daily Guest

    It may just be that the grease on the motor drive / gearbox assembly has
    dried out. A simple check with a voltmeter across the motor connections,
    whilst operating the remote vol up or vol down buttons, should tell you the
    whole story. If volts are present, and the motor does not turn, then either
    it is stalled because of a mechanical / lubrication problem, or the motor
    itself is faulty. If there are no volts, then there is a circuitry problem,
    which may well be beyond your abilities to trace, if you are not a service
    engineer.

    Arfa
     
  3. Dynamic Dave

    Dynamic Dave Guest

    Thanks for the reply Arfur... I'll take a look and maybe have to take i
    down to an engineers. Was a great amp, shame to have it not workin
    properly.

    Thanks again,

    Dave.
     
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