Today I had a new inverter installed to replace the one that was “fried” by an electrical power surge. All was well for a few minutes tonight until it suddenly cut off my TV and printer and started making a high-pitched squealing sound. The error code indicated that there was an overload on it. So I unplugged my computer and reset the inverter. The same thing happened again with only the TV plugged into it. I sent a message to the RV tech. I hope he can return on Friday to repair or reset it.