A young kid who was playing in the rain last wednesday brought me this piece of board after he found it laying around in a pile of junk and garbage. He even joked about it and asked if it would still work.
I had built a lot of headamps before, most of them a CMOY or a slight variation of it. Since I had been thinking of building myself my very own CMOY, I never really got the time to build one for myself. An idea popped and so I asked the kid if I can have it and he obliged.
I cleaned it up a bit, used a hair dryer to dry and make sure that moist is out. I hooked it up to a psu and a pair of multimeters and found that it still works, even after being soaked in rain water.
And so I cleaned it up and removed the old caps and chip.
First to be replaced were the corroding jumper wires, I got a few solid silver wires so that's what I used to replace them. Got some precision 1/8w resistors laying around from another personal project which hasn't started yet.