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Why is there Steel Wire in my Harman Kardon HK6100?
Why is there Steel Wire in my Harman Kardon HK6100?
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Old 12th July 2019, 01:32 AM   #11
Spinifex is offline Spinifex  Australia
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Old 12th July 2019, 03:25 AM   #12
Cal Weldon is offline Cal Weldon  Canada
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Why is there Steel Wire in my Harman Kardon HK6100?
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Old 12th July 2019, 06:15 AM   #13
Ian Finch is offline Ian Finch  Australia
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That's good news, though you may find that using solvent/lubricant sprays is not a lasting fix for potentiometers. I've read and heard of a lot of short-term success stories but in the end, a worn carbon track is still a worn track and replacement with a reputable quality brand and grade of new pots is the best option for oft-used volume controls, at least.

The location of the speaker cables was certainly suspect since the speaker +ve leads are connected to the feedback circuit of the power amp and that could well result in injecting 50Hz + 100Hz hum to the input stage. That it was noticeable in only one channel makes this doubtful though. Had you moved the cable about and checked for variations by ear, you might have learned a bit more about this but it's moot now and at least you do have silence - enjoy!
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