I have two identical devices, the Megger MIT525 5 kV Diagnostic Insulation Resistance Tester. One of them present this behavior:
When it is charging connected to the electric network, the device turn on and work, even charge the battery. However when it is unpluged from the network the battery is unable to turn on the equip.
I already interchanged the battery between the devices.
Looking the card I noted this SMT capacitors and I want to know if they are damaged, maybe it could be the cause of the problem.
I don't have experience in mounting surface. So I want to know if this is an indicator.
How to do I tell if ceramic capacitors are damaged?
Note: If somebody have the technical manual of this device or know how i can get it could be very useful.