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Author Topic: master volume knob static Bernardo McLaughlin Film Handler Posts: 8 From: Hartford, CT Registered: Oct 2012 posted 01-12-2014 04:59 PM                     Having some audio issues. The master volume control knob on our Pyle Pro PYP-1 stereo pre-amplifier is making some static noise when turned, and in some cases the knob seems to catch and the volume far diminishes below what it ought to be, sometimes to the point of almost no output. Any tips?  |  IP: Logged Frank Cox Film God Posts: 2234 From: Melville Saskatchewan Canada Registered: Apr 2011 posted 01-12-2014 06:18 PM                        Perhaps it just needs to be cleaned. Do they still make that spray-on TV Tuner Cleaner stuff? I used to be able to buy it at Radio Shack.  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 01-12-2014 07:18 PM                     I use the MG chemicals cleaner with lubricant on pots i think it is tradenamed nu trol  |  IP: Logged Bernardo McLaughlin Film Handler Posts: 8 From: Hartford, CT Registered: Oct 2012 posted 01-12-2014 07:30 PM                     Think we'd have to remove the knob to clean it properly? It's not clear to us how to do that properly.  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 01-12-2014 09:34 PM                     You have to open the chassis and spray it into the pot then work it back and forth  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 01-13-2014 06:12 AM                        WD40 is the best contact cleaner.  |  IP: Logged Mike Blakesley Film God Posts: 12767 From: Forsyth, Montana Registered: Jun 99 posted 01-13-2014 11:46 AM                        I think "with lubricant" is the main thing to look for -- I remember mistakenly using "Electronic Cleaner" on a volume control (not theatrical, in a home amplifier) but that stuff is just alcohol, it just dries everything out and makes the problem worse over time.  |  IP: Logged Marcel Birgelen Film God Posts: 3357 From: Maastricht, Limburg, Netherlands Registered: Feb 2012 posted 01-13-2014 01:47 PM                     quote: Louis Bornwasser WD40 is the best contact cleaner. I'm not entirely sure, but I've been told that you should NOT use WD-40 as contact spray, because it contains stuff that doesn't evaporate and will end up clogging up your pots. I would go for something that's actually qualified for use with electronics, there are tons of brands out there.  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 01-13-2014 02:32 PM                     because it is a wiping contact on carbon it needs a lubricant i worry about some of the other things in wd40 attacking some of the parts and plastics in a pot but MG chemicals nutrol has been around for years  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 01-13-2014 08:40 PM                        Put Wd in RCA tube preamps in the 1970s and 20 years later never had static again. Read ALL of the labels and see if you don't agree. louis  |  IP: Logged Jim Cassedy Phenomenal Film Handler Posts: 1661 From: San Francisco, CA Registered: Dec 2006 posted 01-13-2014 08:43 PM                     Best contact cleaner I ever used was some stuff called "Cramolin Red" & "Cramolin Blue" (I think one had lubiricant and the other one didn't.) But they re-formulated it about a dozen years ago because some of the chemicals in it were considered too envionmentally unfriendly. The new forumla had some less toxic ingredients, but IMO the new stuff never worked as well as the original product. I liked this stuff so much that when they first banned it for sale in the USA, I was able to 'smuggle' two cases of it in from Canada. I still have a few cans left. (And that might explain the hole in the ozone layer directly above my house)  |  IP: Logged

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