FW3A FW3C FW3T tailcap button mod - o-ring helps but click doesn't always trigger

Thanks for all of the above.

Is this the right product for cleaning?

https://www.amazon.com/Hosa-D100S-2-DeoxIT-Contact-Cleaner/dp/B0014F110I

Yes, but I personally prefer the needle bottle https://www.amazon.com/CAIG-LABORATORIES-D100L-25C-Contact-Cleaner/dp/B0000YH6F8

Also, this is a nice bundle https://www.amazon.com/DeoxIT-G100L-D100L-solution-applicator/dp/B01BW8VRVY

I am not a fan of 1ml containers. It’s irrational, I know, but I just don’t like paying money for something that small haha.

How about one of each of these:

  1. https://www.amazon.com/DeoxIT-Gold-Brush-Contact-Conditioner/dp/B0015A7CYG - “DeoxIT Gold G100L-2DB Brush Applicator, Contact Cleaner/Enhancer/Protector for Gold Surfaces, 7.4 mL, Pack of 1”
  2. https://www.amazon.com/gp/product/B0000YH6F8 - “DeoxIT D100L-25C Precision Needle Applicator, More Than A Contact Cleaner, 25 mL, Pack of 1”

And do I apply the D100L-25C for cleaning first and then the G100L-2DB after?

Gold is for just that, gold. So its great for pcbs and gold plated springs. 1mL will last you maybe your life. I use my d100 weekly and had it for 2+ years, still 75% left. D100 is great for everything else - brass, Al, battery contacts etc.

Is there gold on the FW3A that I need to clean?

The gold colored pads on the PCB are in fact gold, so that’s the primary application for that stuff. I regularly tear down my lights and clean the ground rings of drivers and tail boards with it. Keeps flickering away and current maximized. Most times I get a light that’s acting up from someone all I do to fix them is clean the gunk, deoxit all conductive interfaces, and lube the o-rings. Voila 95% of the time.

Thank you. Very helpful info. This is going to be useful for years to come.

Is the cleaning technique for both of these liquids. basically “wipe it with a lint-free cloth”? Anything special?

I’m tired. Thought this was about putting actual gold in the flashlight for a minute. 1mL of gold for each flashlight. Then I started wondering why there was only 75% left & what performance advantages it was bringing to the flashlight. Higher CRI, better tint, more lumens?