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Posted: 2024-06-0402:59 PM
firmware smv3000ai
I'm having a bit of bitter problem with my ups. the pic inside shorted the pin responsible for turning the inverter on/off to Vss. I've font the replacement PIC, but surely I need the code. I haven't tried to read the old one yet, I'd appreciate any experience/support regarding the problem. I wish they used optocoupler instead of a transistor. apparently there was a internal fault of some sort on start-up causing mosfets to short, other ICs and transistors. got all that fixed and tested ok.
this is my home setup and I hold an engineering degree.