Unless you have your device in an over 80 degree plus room and it is an enclosed space are about the only way your device can overheat. The 502's run hot normally. Mine is very warm to hot to the touch and has been for several years and has itself never failed. The power adapter has failed, supplying almost enough power to keep if running but not enough to make it stay up reliably, you may want to check that. If you think it is an overheat issue, get a small fan to blow on it to see if it helps.