crwdns2934241:0crwdne2934241:0 XDevPro Net

crwdns2934249:0crwdne2934249:0:

You could be looking at dried thermal paste under the heatsinks or failing capacitors. As the other comments say, the amount of time between turning on and turning itself off could point closer to the problem if shared.

crwdns2915684:0crwdne2915684:0:

open