I've already tried a complete firmware reload with no positive results', the 1st thing I tried after searching this forum. I will try what you have said about the diagnostics log but my thoughts with it being time based is that I have a failing component somewhere. I did think about a dry pcb joint but it would be a long shot and take a long time to do very carefully. To pay for it to get reflowed would be way too much. Annoying thing is I put a new battery in it as well ! (and yes it was still locking up and rebooting on the old battery). Oh well, the outside condition of this is nearly immaculate as well. I'm glad I didn't pay too much.