Taz 6 not powering up

Not sure what may have happened, but my Taz ran over night and when I woke up it was on with the LCD off and just the red power button on. I’ve opened up the side and the main fuse looks fine. Any ideas what to check?

Start by checking the to 5a nano poly fuses:

The usual cause of a blown fuse, would be a short to your hot end. Never use any metallic objects when cleaning the nozzle. Inspect both sets of wires (thermistor and hot end) going into your heater block, to ensure the insulation is preventing a short.

You can see the F3 fuse controls the logic, and that one could have been blown. You can swap the F2 and the F3 fuse to power up the machine and verify, but it will not be able to move motors.