404B-340G 404B Contact Cleaner with Electronic Grade Silicones, 340g (12 oz) Aerosol Can

I have repaired stereos for decades.So far this product has NOT harmed a single potentiometer, switch, connector, etc. SAFE.It is also very good at quickly cleaning/quieting most controls with lasting effects. EFFECTIVE.

Used this to clean some of the smaller potentiometers on my old Oberheim. Worked well.

I am using this right now to clean my Guitar Amp internal components, its working out great!

This is amazing. I love love love this stuff. I’ll probably have it for a long time. I brought this specifically to clean out my keyboard. I have a razor chroma mechanical keyboard. I spilled Naked juice on it and my keys became sticky / stuck and I can’t buy the specific keyboard I brought anymore because it’s unavsilable. So I brought this. Snapped the keys off used the straw thing and pressed the key half way with my finger and sprayed this in the hole and then pressed the key up and down quite a few times and my key is no longer sticky or stuck. It really works and didn’t break my keyboard. I also had this one key that’s been stuck for as long as I know. Did the same thing on that key and now it works again!!

It saved a $1200.00 subwoofer!All of a sudden the subwoofer started making a constant fluttering warbling noise, like a bad amp maybe? Cleaned both the volume control and the 0 to 180 degree Phase control. With a 5 second squirt each, cycle it 50 times, dab up any excess and repeat for both. Home run and now as quiet as brand new. I am so very happy with the results!

Rather expensive, but this control cleaner did a nice job returning my bass amplifier to working condition. All the volume and tone controls, as well as the switches, cleaned very nicely, No more scratchiness when turned.

Used it for cleaning and lubricating rollers on a copy machine. They were howling with paper dust residue that made them screech and the plastic capstan-like shafts on metal made it worse. A couple of shots on each and they were quiet again. Comes out quickly, so be careful of over-spray, but dries very quickly too.

I read other buyer's reviews about the tube not fitting the nozzle but assumed they were isolated problems. Ordered it anyway, lo and behold, ours didn't fit either. I'm real surprised they are continuing to ship this out, aware of the problem. Guess I'll return it.