GS3 random reboots....a lot of them
So I am posting this for a coworker. A little background on me, I have been rooting and romming since my Droid X (what a pain that was) so I like to think that I am not too noobish and know what I am doing. I currently have a GS4 rooted and rommed running Hyperdrive and I love it, no issues at all.
A coworker came to me with a stock, bloated up GS3 and wanted me to unlock and root it. I took an afternoon and did it for him, installed TWRP and ran a backup of the stock, rooted rom and said have a field day looking into flashing roms and kernels and such. He started reading up on it and got around to flashing CarbonROM (used to run it on my Gnex, loved it). After a few hours, he texted me and said he was getting reboots. The first thing that came to mind was maybe he forgot to wipe everything or something, so I instructed him to factory reset a few times and make sure it gets wiped clean. He did and reflashed and still was getting them. He then tried LiquidSmooth. Same results...I then instructed him to try going back to a TW based rom and he tried out Hyperdrive. Still same results. I tried to do some searching and I am out of ideas. I saw that sometimes Nova launcher can throw fits which I did install on there for him, but the last few times he said he was not using it. We tried a few different kernels as well, still no luck. Should I try and get the phone back to a stock, unrooted state and retry? Or is it a defective device maybe? It WAS a refurb sent back from Verizon as he was having issues a few weeks back and they had to send a replacement. Should I unroot it and get it to stock and have him return it? Any help would be awesome.