409B Electrosolve Zero Residue Electronic Contact Cleaner, Clear 15.45 Fl Oz

I picked up the MG Chemicals 409B Electrosolve Zero Residue Contact Cleaner (15.45 fl oz) to clean some old, dusty mining rigs, and it worked wonders. After months of running 24/7, my miners had collected a ton of dust and grime, and this cleaner made them look and perform almost like new. What I really like is that it dries quickly without leaving any residue, so I don’t have to worry about moisture or film causing shorts. It’s safe on plastics and electronics, which is perfect for circuit boards, fans, and power supply connectors. The spray nozzle makes it easy to get into tight spots, blowing away dust and cleaning contacts thoroughly. ✅ Pros: Zero residue formula — safe for electronics Cleans dust, dirt, and oxidation from boards and connectors Quick-drying, no waiting around Large 15.45 fl oz can lasts a long time Works great on mining rigs and other electronics ❌ Cons: Strong odor while spraying (use in a ventilated area) 💡 Tips: Always power down and unplug your miners before cleaning. Use short bursts instead of long sprays to avoid over-saturation. Do this cleaning outside or in a well-ventilated area. Pair with a can of compressed air for best results — blow out dust first, then use the cleaner on contacts. Bottom Line: The MG Chemicals 409B Electrosolve is a powerful and reliable cleaner for electronics. It brought my old miners back to life by safely removing dust and oxidation, and I’ll definitely keep a can on hand for future maintenance.

I don't know how it works but it does. I opened the hood of my old receiver and accessed the innards side of the volume knob. After Several squirts and a lot of rapid turning of the knob, the crackling sound disappeared.

This is really good stuff for anyone who likes to work on things that are electronic. Potentiometers create Gunk and debris inside of them and this cleans it out. I use this on a marshall guitar amp, my washing machine, and a few other electronics that I decided to clean just because. Works really well.

Sometimes when you use a product like this, it can be hard to know for sure if it cured your issue. I had a guitar amp with multiple scratchy pots (potentiometers) I took brain' out and was ready to take some pots out, yet accidentally observed or noticed that there was a hole in the side of each one lol.... So then I put the little straw on the end of the spray head, and used short spurts in each of the holes, turned each knob rapidly back and forth, FIXED!! 100% , I also used this on a Fluke Meter (pro model) , the display and a couple of push tabs had stopped responding, after a little spray where applicable, FIXED !! lol Quite happy, it works, wear surg gloves for sure, and avoid inhaling while using, use outside or get away quickly after spraying.. I'm sure the ingredients are 'potent' , yes lets leave it at that. Have a great day, I'll buy this again, as/if needed. ---------- By the way, I've had this for a pretty long time now and unlike WD40 where the propellent is spent, long before you get down to the 1/4 can level, this propellant and seal system seems to be excellent.

A bit of back ground, I have a mouse that its scroll wheel is a bit messed up and looking around online I found that some times dirt or dust can get stuck in side the wheel gear that can mess with it(scrolling down would cause it to scroll up a bit and vise versa). after trying to clean it out with compress air and rubbing alcohol which only lessing the issue I took a gander and decided to buy this and see if it would fix my issue and it did after I after I spray a second or two on each side of my scroll wheel and rotating it my issue with my scroll wheel is gone completely.

I have used MG Chemicals contact cleaner for many applications over the years and it works very well. It is available in residue and non-residue formulas. The "residue" is a lubricant that is left behind after the cleaner is sprayed and that is necessary in some applications. The one I purchased is the non-residue formula. I use it mainly for controls and switches when they get dirty. I have the residue formula just in case but I rarely used it. I used to get mine from an electronics store that went out of business after 60 years.(Baynesville Electronics)I am so glad I found it here. Thanks again, Amazon!

Have a 50W tube amp (Friedman Runt) and lost bass response on 'dirty' channel. Reached out to Friedman and they suggested liberally cleaning the pots out with this (and only this) product. Was very leery at first but pulled my chassis from the cabinet and blasted the pots at mid pressure via the openings for the lead-outs. It worked like a charm. These Alpha-brand pots are pure tin coated and have an issue with strange symptoms popping up, Dave Friedman knew the fix, shared it, and we are rocking out once more on the over-drive channel!

For several years, I have used Kontak electrical cleaner when performing initial and periodic cleaning of equipment posts and RCA/XLR connectors. Due to the expense and difficulty of finding Kontak, I resorted to ordering MG 409B and am very pleased with the application result. This product is strictly a residue-free cleaner, without any silicone or lubricant additives -- just like Kontak. I prefer the convenience and control of bottling the MG 408B over the aerosol spray. Accordingly, I have filled the empty glass Kontak cleaner bottle and use Q-tips, pipe cleaners, small bristled brushes, and sterile cotton cosmetic pads to clean and wipe audio connectors and equipment posts. The cost/benefit ratio (compared to Kontak) is enormous, and the detailed specifications for both products are highly comparable. The MG 408B contact cleaner receives my highest recommendation for the stated uses.