intermittent fault - weird need help
I have a GS3 i9350, that has just started doing some weird stuff. Currently, I cant turn it on at all, (have unplugged the battery), and when I connect a charger, even this doesnt change anything. (no light comes on).
It did this last week, and I thought I must have water damaged it. (maybe sweat in pocket etc) - didnt really get it wet as such.
Two days after the first time, it came back on... I was actually just about to list it on ebay as damaged spares, but it fired back up and worked great.
Then yesterday after a full day of working great, I put it on flight mode last night, and this morning, it wouldnt turn on, and it wont charge..
very weird. Have tried a 2nd battery to no avail.
The issue has co-incided with me changing the kernel to Googy max (currently 75mv undervolted), but if this was causing it (wouldnt the charge light still come on even if it wouldnt boot ) or could it be kernel related?.
A bit bizzare.. does it just seem like an intermittent hardware fault or could software kernel / undervolt issue?
FYI I was able to run for most of a full day @ 75mv undervolt with no issues.
Have also pulled apart and made sure all ribbon cables etc are securly connected / screen etc, no clear signs of anything wrong.