Small update on what I have done thus far:
New connector came in yesterday. I grabbed the wrong extractor from work, so I will have to finish installing it later this week. I took some measurements on the input connector CN1 as a start. The data sheet is pretty hard to read but my values were:
Order: color, data sheet, measured
Violet, 18Vdc, 19.2Vdc
Orange(2), 32Vdc, 42.5Vdc
The orange wires from the bridge rectifier is high, so I am a bit concerned.
The remaining colors are transformer wiring measured in VAC, as seen in the attached data sheet screenshot. The voltages all were correct meaning the main transformer is working correctly.
The last thing I’ve done is check the resistance on all of the coils. They all read about 3-4 ohms, which means they are all ok.
My next steps are to put the new connector on, disconnect everything else from the power supply board and reconnect one connector at a time. This will help me diagnose exactly which circuit is pulling too much current causing the 4A fuse to blow. I will post further findings and troubleshooting efforts for anybody else doing so at home.
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