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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Harmon Kardon HK620 Amp
Hi, I'm new to this so I hope someone out there can help. I've recently dug out my old Harmon Kardon HK620 Amp that has been in storage. Now I 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. The remote works for everything else. Is there a quick fix for this?
Any help would be much appreciated. Thanks, Dave. |
#2
Posted to sci.electronics.repair
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Harmon Kardon HK620 Amp
"Dynamic Dave" wrote in message news Hi, I'm new to this so I hope someone out there can help. I've recently dug out my old Harmon Kardon HK620 Amp that has been in storage. Now I 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. The remote works for everything else. Is there a quick fix for this? Any help would be much appreciated. Thanks, Dave. -- Dynamic Dave 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 |
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Thanks for the reply Arfur... I'll take a look and maybe have to take it down to an engineers. Was a great amp, shame to have it not working properly.
Thanks again, Dave. |
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