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PROGMAN View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PROGMAN Quote  Post ReplyReply Direct Link To This Post Topic: volume control
    Posted: 01 Apr 2010 at 9:40am
Why do SOME radio, speakers and hifi with manual dials do a crackling sound when changing the volume.

another example is it is so bad it crackles throughout even distorting one speaker for a while and  a loud buzzing sound.

Is there a way to fix them or is it  screwed up?
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Negoba View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Negoba Quote  Post ReplyReply Direct Link To This Post Posted: 01 Apr 2010 at 9:47am
Dirty rheostat. If the knob comes off the stem, you could try one of those air spray cleaners they use on keyboards, but it may just be shot.
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dean View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote dean Quote  Post ReplyReply Direct Link To This Post Posted: 01 Apr 2010 at 11:52am
Is either dust & dirt or the metal-film (or less likely carbon) track is scratched, pitted or flaking off. Best solution is to replace the potentiometer.
 
 
You can do a short term fix by twisting the control back and forth a few times to sweep the dust away.
 
It's unlikely that switch cleaner will get onto the metal-film track through the front, you'll need to open the case as squirt the stuff into the innards of the control.
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thellama73 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote thellama73 Quote  Post ReplyReply Direct Link To This Post Posted: 01 Apr 2010 at 11:56am
Happy birthday, Dean!
Those who know what's best for us must rise and save us from ourselves.
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dean View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote dean Quote  Post ReplyReply Direct Link To This Post Posted: 01 Apr 2010 at 12:07pm
Thank you Thellma Big smile
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Sean Trane View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Sean Trane Quote  Post ReplyReply Direct Link To This Post Posted: 16 Apr 2010 at 9:33am
Mine goes up to 11Tongue
my music collection increased tenfolds when I switched from drug-addicted musicians to crazy ones....



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PROGMAN View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PROGMAN Quote  Post ReplyReply Direct Link To This Post Posted: 17 Apr 2010 at 11:48pm
Ritchie Blackmore's goes up to 12 Tongue
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Sean Trane Quote  Post ReplyReply Direct Link To This Post Posted: 20 Apr 2010 at 4:00am
Originally posted by PROGMAN PROGMAN wrote:

Ritchie Blackmore's goes up to 12 Tongue
 
That's kids stuff for Peter Townshend who is now almost deaf from his level 15 loudness
my music collection increased tenfolds when I switched from drug-addicted musicians to crazy ones....



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