QD Contact Cleaner 03130 – 11 WT OZ, Plastic Safe Electronics Aerosol Cleaner, Suitable for Sensitive Electronics and Electrical Equipment, Pack of 12

An absolute must have for anyone doing service or maintenance on switches, connectors, potentiometers or any other kind of contacts that could be effected by dirt, dust, and corrosion. This is good stuff!

My 60 year old receiver-amplifier had really bad noise from the many years of service. The volume, balance, bass and treble switches had terrible scratchy sounds when they were turned (and sometimes remained afterward). Sprayed all the switches, twice and let dry. Now it is working almost like it was new. Good product.

It's the genuine product, I use it to clean battery terminals of expensive equipment, without significant time investment

I was looking around to find a reliable way to clean the potentiometers (rotary sound/volume controls) on my vintage sound equipment. CRC QD Contact Cleaner 03130 was the ticket ! No more scratchy, crackly, sound from my amplifier since using this product to clean the connections. No more sound cutting in and out. The knobs turn so easy now... It has brought new life to my vintage Peavey amplifier ! It is safe to use... Just spray it on the affected electronic parts using the included spray hose (You don't even have to remove the components from the PC board !) Of course, you should let it dry before putting your equipment back into use but it drys quickly. THIS STUFF WORKS ! Highly recommended for tube sockets, potentiometers, and any other electronics where you need to restore a good electrical connection... Radios, Amps, Tape Decks, outdoor light sockets.. just about anything electrical !

10/29/2019: UPDATE of the UPDATE: Back to 5 stars. Needed to apply several times, but I assume last time I was able to get if better in the (closed) Potmeters, wiggled the potmeters and now the result is perfect. No crack at all after a week if regular use of my 1977 amplifier. So spray works excellent - likely a 'user error'. UPDATE: it worked fantastically- for one day only! I tried it now multiple times, but the cracking returns after 1 day. in all cases I let it completely dry up before using,. So disappointed! ORIGINAL REVIEW: Got a 1977 Yamaha CA810 amplifier which I started using again after 18 years. It is very well build, but the pot meters for volume, balance and adjustable loudness barely worked. Not only cracking, but then off and then extremely loud. Not usable in that state. I bought this product, sprayed it on/in the pot meters (very strong flow!) and waited 1.5 hr until completely dry. The result? AMAZING!! No single crack in any of the pot meters treated. Main complaint is that for to avoid spilling /spraying during transport they covered tape over the lid. That worked great, but when removing this tape, also 90% of the instructions were torn off. The can is pretty big, enough for the next 400 years of this amp of 20 other amplifiers. 1/2 the size for 60% of the money would be my preference, because I don't have much other use for it than my aged amp.

Works great on an aging bosch battery drill trigger. Had lubricant contamination on the contacts and this cleaned them right up

Perfect!

The headphone jack contacts in my Denon AV receiver started sticking together after removing the headphone jack and keeping the speakers disconnected. After leaving the receiver powered down (and still plugged into the wall outlet for ground) for >12 hours to ensure all electricity had drained, I sprayed inside the jack using this QD contact cleaner several times while inserting and removing the plug and then let it dry for several hours. Now the headphone jack is working well again.