Unplug the console. Check that fuse with your multimeter set to continuity mode (the one that beeps). One probe on one side of the fuse, the other probe on the other side of the fuse. Beep=good fuse, no beep=blown fuse.
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Voltage dc, test the inputs and outputs on and around PWM IC MB39A116A.
Unplug the console. Check that fuse with your multimeter set to continuity mode (the one that beeps). One probe on one side of the fuse, the other probe on the other side of the fuse. Beep=good fuse, no beep=blown fuse.