Strange Gamepads

As I mentioned in the post about cleaning corrosion from Xbox 360 battery holder:  https://strangegamepads.blogspot.com/2019/06/cleaning-xbox-360-wireless-controller.html you should be able to use lemon acid to clean corrosion also. Well yesterday I realized that my lemon juice concentrate is over 6 months past best before date and the latest salsa I made using that tasted already a bit stale. So this would be nice opportunity to check if lemon juice can clean corrosion. I searched for the rustiest screws I could find. Found these parts from my old doorbell. Rusty screws and a bonus spring I put those into a container and added lemon juice until the screws were submerged. Into the container Add stale lemon juice Yummy The spring wasn't completely covered so I propped the container to an angle get everything covered. Everything covered I let the ingredients stew overnight. I shook the container couple of times to get the rust moving. When I opened the lid the smell was interesting....

I've been recently playing quite a lot of Fallout: New Vegas on my main TV using Steam link. I've been using wired Xbox 360 controller and it works fine, but I'd like to move to wireless solution. I've had one Xbox 360 wireless controller laying around, but I didn't have the PC receiver for it. I ordered one 3rd party receiver from dealextreme, but it never arrived. However I finally managed to find one original Microsoft receiver cheap. So I decided to clean my controller while waiting for the receiver to arrive. Front before cleaning. In nice shape. Even the analog stick caps are in good condition. Back. Again only minor scuff marks. But here is the real problem. The battery holder has had some leaking batteries inside. Luckily it seems that the leakage has not gone to the terminals on the PCB. Those were clean and without corrosion, so I'm assuming the PCB is fine also. First a warning. That white gunk is not good for you. It is corrosive so ...