Lately my Primer2 began to behave strange. About less than a minute after turning on the device, the display and the sound stop working for 1-2 seconds. Then it resumes and continues to run the program, without reseting. This happens every few seconds as well, the "frequency" increasing (i think) with time. I don't know if it's an overheating issue, a software problem or something else. It happens no matter what CircleOS version I run on it (even without any application). Any idea?