I need a suggestion how to proceed a hardware failure. Recently, I am working with a RFID scanner( 1D and 2D) that has a variety of application(Buzzer,vibrator,bluetooth senors) interfaced with android smartphone. This device has a Gun interface (similar to **broken link removed**).
When I frequently scan the object through RFID, the device gets power OFF suddenly after 1 hour test. For sure, PCB is also getting hot.
I am not sure whether it has firmware or hardware problem.