Repair Log… (10/4/11)
MPU4 – PSU Fault
Machine continually resets. Initial inspection.
Electro-caps are probably 20+ years old.
C2 is dented. The whole set-up looks grim.
Remove the fixing screws and remove the power supply pcb. There are 3 electro caps
which need replacing,
C1 = 4700uF - 63VDC
C2 = 15000uF - 25VDC
C3 = 1000uF - 16V
If you are unsure about polarity, check the psu schematic here and buzz out the
cathode to the red connector.