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Just want to make sure how to clean an amp

post #1 of 7
11/6/11 at 7:53pm
Thread Starter 

Hello, I just received my headphone (JVC rx700) and I noticed that with my amplificator (an old Nikko NR-719) it make a buzz sound (a constant high frequency sound) and it really pisses me off. Ok I know its all dirty in there and also the potentiometer are dirt too.

So can I use Isopropyl alcohol (from the drug store (pharmacy)) to clean my amp ? ( Do I need to wait before power it on after i cleaned it?)

 

I know it's not probably the best liquid to use but thats what I got for now

Thanks

 

EDIT: also is there places i shall not touch?

 

70% alcohol ...

 


Edited by adgame - 11/6/11 at 8:18pm
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post #2 of 7
11/7/11 at 6:44am
Thread Starter 

Or do you have any guide I can watch?

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post #3 of 7
11/7/11 at 5:49pm

I would start off with a can of compressed air first.

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post #4 of 7
11/8/11 at 9:20am

I'd be very careful cleaning the pot, i've read somewhere that the usual cleaning agents/oils might damage it even further. There was one that worked but i can't remember what it's called i'm sure someone around here knows what it is. Maybe have a search on the DIY section. And yeah for the rest use a can of compressed air and keep it straight up unless you want to give someone a freeze then it's all good biggrin.gif

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post #5 of 7
11/12/11 at 7:32am
Thread Starter 

Tryed with alcohol and 1 week later its still grizzle (figure out the sound)....

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post #6 of 7
11/13/11 at 8:30am
Quote:
Originally Posted by adgame View Post

Tryed with alcohol and 1 week later its still grizzle (figure out the sound)....


First, 70% isopropyl is way too diluted for use in cleaning.  It may actually promote corrosion because the remaining 30% is often water.  You can find 90% alcohol for less than a buck a quart at Walmart, though, and it will do a good job.

 

I second the others about cleaning the pot.  Try to find something specifically used that purpose, nothing else.  Many volume pots have a conductive grease inside that contributes to the smoothness of the volume operation.  Use of alcohol as mentioned above will dissolve and remove that grease, perhaps leaving the pot in a worse condition than when you started.
 

 

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post #7 of 7
11/13/11 at 5:59pm
Just hose it off in the driveway. biggrin.gif

Though I'd also try spraying the pot with a contact cleaner. You can find it at Radio Shack. If that doesn't work, it's relatively minor surgery to install a new one.

I find that compressed air doesn't always get off the caked-on dust inside. I get a cheap paintbrush at Home Depot for 50¢ and use scissors to cut down the bristles until they're stiff. That will remove the caked-on stuff which then can be blown out.
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