Doesn't start up after not using several months

"about 1-2 years ago i bought a 2nd hand gopro hero 2 that also wouldnt start anymore,

the guy didnt do anything specific with it, it just randomly stopped working,

if i remember right the light did turn on if he connected a charger/usb cable but never managed to turn it on,

i looked on the internet and found some people that had this problem and fixed it by putting the gopro (in a sealed bag) in the freezer for a while and after taking it out turn on the gopro and it would work, then directly charge it and it should be in working condition again...

i hope its not too late and all, would be a waste, look it up on the interwebs.."

Try cooling it in refrigerator over night, then install battery and turn on. Worked for me! It defies logic but was last chance before I tore into it and checked C11 on mobo by lens as directed by another user. It's a 47mfd tantelum surface mount cap (476) that failed on another user. I'm not sure if it was the temperature or the drying effect of the dry refrigerated air that did it.

put in freezer overnight. take out and install battery and it will turn on. sounds crazy but it worked for me. something to do with the electrical contacts inside contracting and possible breaking dielectric corrosion in the process.