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Potentiometers and circuit boards in my home stereo amp can motormaster contact cleaner be used instead of caig deoxit d5 would it be definitely safe plastics etc.

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Uzse ethe Deoxit 5 to be safe.

Posted on Dec 27, 2016

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Posted on Jan 02, 2017

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1 Answer

Do I need to clean my noisy FV500L pedals or is there a less intrusive fix?


I suggest a shot of DeOxit 5 into the pots to clean them up. If not, replace thepots.

Mar 30, 2017 | Denon Music

1 Answer

Service manual


Open the box and try to spray a cleaning/lubricating solution inside the volume pot mechanism like Deoxit D5, you can also spray a little of it on the output connectors where you plugin your cable that runs to the amp. If that doesn't solve your problem you have to replace the volume potentiometer. The machine I have had similar issues and I was lucky to have a pot close in size and resistance value as the original which in my case was broken, so I just replaced it. Good luck!

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When I use the Master volume the amp will suddenly bypass the master volume. And when I play on the top boost the volume fluctuates by itself. Thanks for your help Devon


I suspect you may have either a circuit board crack or the volume pot is bad or soldering of it is bad. Vibration will make things come and go. Look for broken solder around the pot leads first. Then look for a cracked circuit trace on the board near the ground end of the volume pot. If you put cleaner in the pots NEVER use Deoxit or Blue Shower. Use CRC226 which is available at Home Depot in the electrical dept.

Apr 29, 2011 | VOX AC30HWHD Amp Head

1 Answer

After several months of being stored i used my roland juno D to find that some of the keys didnt work. I cleaned the rubber contacts etc but they still dont work? and the ones that do are uneven volumes...


Did you clean these contacts with ONLY isoprophyl 99% alcohol and Qtips? If you used another product you may have spoiled the contacts. Also did you clean the circuit board where they contact with the same product?

If you used another cleaner, best to redo your work... quickly... Contact cleaners such as Deoxit and Blue shower destroy this type contact.

Mar 14, 2011 | Roland Juno-D

2 Answers

The volume control on my Gorilla GB-30 amplifier crackles when turned, but the actual volume never changes. Will a new control switch fix the problem? Are manuals available?


There likely is another problem, possibly a cracked circuit board or bad solder at the control. If the control worked at all, there would be some change in volume. Take unit in for repair.

Feb 08, 2011 | Music

1 Answer

Volume control pot is bad. Tagged VR1 on PC


Before you replace the pot, try cleaning it. Use electrical contact cleaner such as:

- CRC QD Electrical Contact Cleaner (available at many auto supply stores) - www.crcindustries.com
- Caig DeoxIT (available at Radio Shack and electronics supply stores) - www.caig.com/

Spray the cleaner liberally in the pot (spray where the shaft meets the pot, and if possible, into any holes on the back of the pot), and rotate the shaft repeatedly. Repeat several times.

If the pot is still intermittent, it can be replaced, but you need to replace it with a compatible part, and the job will require some soldering skills to prevent damaging the rest of the circuit.

Make sure you get an appropriate replacement. You need a replacement pot with the correct resistance (measured in ohms) and taper (linear or analog). Typically, the value of the pot is marked on the back, and will read something like "103A" or "10K - B". 103 or 10K indicate the resistance in ohms, and "A" or "B" indicate whether it is linear or audio, respectively.

Your best bet is to desolder the part and take it to a local electronics store for a replacement. If no store is available locally, replacements can be ordered from online stores such as:

- Mouser.com
- Jameco.com
- Digikey.com

Feel free to post the numbers on the back of the pot if you need help locating an appropriate replacement.


(Note that the convention for labeling taper has changed over time - getting the wrong taper should not damage the equipment, but will probably result in the volume control to seem "not smooth.")

Nov 02, 2009 | Boss Music

2 Answers

Problem of marshall g80rcd, volume drop when i play


It sounds like your volume control is dirty. You will have to disassemble the amp enough to get access to the volume potentiometer which is soldered to the circuit board. There will be a square hole in it that you can spray some contact cleaner into the control. Use only contact cleaner as anything else could damage the control. Use a small squirt and rotate the shaft. If this doesn't solve the problem you may have to replace the control. While you have it apart, examine the solder side to make sure all the solder joints are perfect especially those on the controls. A bad solder joint can also cause the same problem. Before you take the amp apart unplug the power with the amp on and the volumes turned down. This will discharge the capacitors so it will be safe to work on. I hope this helps.

Oct 31, 2009 | Marshall Mg15dfx 15-Watt Combo Guitar...

4 Answers

Gain knob produced crackling sound


This is usually caused by oxidation in the potentiometer (fancy name for your volume control, also called a pot). The solution is to buy a small spray can of tuner cleaner, then unplug the amp and partially extract the electronics chassis from the case -- usually by removing screws in the top (but NOT usually the top handle screws), then gently sliding the chassis forward until you can easily see and reach behind your gain knob. You should see a squashed metal cylinder attached thru the faceplate to that knob -- that's the pot. It will probably have 3 wires attached -- don't worry: these never have voltages high enough to feel even when the amp is on. Either near where these wires are attached or elsewhere on that cylinder there should be one or more small holes. Using the small plastic tube that came with that spray can of tuner cleaner, spray a small amount of cleaner into the pot, then turn the gain knob from maximum to minimum and back several times. I usually do this by plugging the amp into a receptacle and moving the knob this way BEFORE using the spray, listening for the noises, then I spray it, manipulate the knob as described and hear the noise disappear. Unless you're confident about doing that, DON'T! Instead, slide the chassis back into the case and plug the amp in, then see if the noise is gone. If so, put in all the screws and you're done. If there's a noticeable improvement, but still some noise, move the knob bank and forth a few more times to see if that fixes it; if not, unplug the amp, slide the chassis out again and repeat the spraying procedure one time, then reassemble the amp and plug it in. If your problem is still not gone, you'll have to replace the pot. If you know how to solder WELL, you can order another volume pot thru a Marshall dealer or online, OR you can remove the pot and take it to a local electronics store where they can probably find an equivalent potentiometer at a lower price than the genuine Marshall part -- be sure to ask for one with "an audio taper" (a geometric chance in resistance that corresponds to how audio amplifiers control sound). Good luck, and please post your results on this website.

Jul 08, 2009 | Marshall Mg100dfx 100-Watt Combo Guitar...

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A ''static'' sound coming from ALL outputs of Korg Triton


try cleaning ALL the contacts involved with Caig DeOxit (D5, S5. F6, G5, etc.) products*, they work very well. e.g.; cables, inputs, outputs, and (if you're confident) all the contact points "under the hood". this static you speak of sounds like less than stellar contact points and can addressed at home if you've the motivation to DIY.
* amazon.com/D5S6-Contact-Cleaner-F5S-H6-FaderLube/dp/B00HNV7WI2?SubscriptionId=AKIAILSHYYTFIVPWUY6Q&tag=duckduckgo-d-20&linkCode=xm2&camp=2025&creative=165953&creativeASIN=B00HNV7WI2

Mar 31, 2017 | Music

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