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Hello I have 3 out of 12 480 duo inverters failing. all 3 was conncted to the grid on the same line. A quick test revealed the 4 A fuse blown, 1 MOV and one or 2 power MOSFETS shorted in all three units. wonder if anyone has a schematic of these units. I have ordered spares for the broken parts I will replace, but just in case other parts are damaged as well a schematic would be helpfull. Best regards Erling