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Cleaning an Amplifier?
Cleaning an Amplifier?
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Old 6th December 2004, 06:44 AM   #1
mhk62 is offline mhk62  United States
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Join Date: Dec 2004
Location: North Carolina
Default Cleaning an Amplifier?

Hi all;

I'm new here and was wondering if anyone could enlighten me on just how to clean a Kenwood KA-701? Over time, it has gotten quirky, with channel dropouts and static. If I jiggle the knobs correctly, sound comes back until I change the volume, switch sources, etc. Then it may or may not drop out again, randomly between left and right channels. Seems like I need to clean it, but other than taking a can of air to it, I don't know how to do this.

Thanks, Mike
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Old 6th December 2004, 08:29 AM   #2
AndrewT is offline AndrewT  Scotland
Join Date: Jul 2004
Location: Scottish Borders
try switch cleaner, it comes in a spray can. Repeated switch operation before the liquid evaporates often solves the problem. Some are flammable (check the can) and should only be used while the item is unplugged.
regards Andrew T.
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Old 7th December 2004, 12:06 AM   #3
destroyer X is offline destroyer X  Brazil
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Location: Recife - Brasil Northeast
Default I use to remove transformer and S-Meters

And them, go to a real shower....with a soft brush passing soap or the material you use to clean your dishes..the neutral one....

And shower with the amplifier....before remove the wooden cabinet if the unit has that cover.

Use sun ligth to dry it, or put is near your heater...not over it.... carefull not to melt plastics.

Also you can use your wife turbo hair drier....wait 1 day over sun ligth and wind passing to install the transformer again together the Meters (if the amplifier use them).

My environment is good for that.... sunrise all the year, and also the wind is always making noise in my windows....if you are in winter now...better to go chemical cleaner.

Never use Alcohol, Amonia, and hard Petrol solvents....do not use thinner, carefull, only watter and soap and soft brush...those special fluids to remove hard dirty will erase the panel letters.

Yes, i made hundred of times...never had problems...never!


I am alive and healthy folks... for Brazil only product: https://www.youtube.com/watch?v=6A_g8uPHHO4: https://www.youtube.com/watch?v=DTXl1eEgygk
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Old 7th December 2004, 01:06 AM   #4
glen65 is offline glen65  United States
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Join Date: Jun 2004
Location: Richland County Ohio
The first order of business would be to go ahead and
clean ALL of the controls and switches. I would strongly
recomend using something like Caig DeoXit. This is available
at radio shack. However Do Not use the cheaper Radio shack
brand cleaner. Spray a small amount into each control. Then
work it back and fourth a few times then allow it to set at least
24 hours before using the equipment again.

Heres the cleaner I spoke of earlier.

Its also available here.

Good Luck
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Old 7th December 2004, 05:05 AM   #5
Enzo is offline Enzo  United States
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Join Date: Sep 2004
Location: Lansing, Michigan
A can of Deoxit from Caig will last a long time. You wil find it works like magic - pots and switches you thought would never work again come right back to life after a squirt and a couple turns back and forth. You can even squirt it into push switches and such to good effect.

I use it daily on my bench - I service pro audio and guitar amps and such.

I see no reason to let it sit a day, it is not conductive. And it doesn't take much, you don't need to flush out the controls, just get a film of this stuff going on. A quick squirt does it.

Deoxit is not real good for sliders. It cleans them electrically, but then mechanically they do not slide as freely. For sliders use MCL Cailube, also from Caig Labs.

Deoxit is available from many sources.
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Old 7th December 2004, 12:27 PM   #6
mhk62 is offline mhk62  United States
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Join Date: Dec 2004
Location: North Carolina
Default Thanks

Thanks for the info eveyone, its less intimidating than I thought it would be.
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Old 7th December 2004, 06:24 PM   #7
Lisandro_P is offline Lisandro_P  Argentina
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Also, regular ethyl alcohol (the one sold in pharmacies) and cotton. I use it all the time to degrease and clean old parts, and while it's time consuming it always works great.
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