yes nothing visible on either front or back side of the chip.

No, all look intakt. I checkt that the pcb cables have power, mesured the fusecontacts without fuses inserted and god following results shown in picture below.

Feels wierd that the 7.5A fuse blows but that the 1A fuse shows 0V?

Hello everyone. Got some problems.
Am using a Duet Wifi 1.04 on my custom built 3Dprinter. It worked fine yesterday and printed well. Today when I turned the power on, preheated the bed and hotend everything went smooth, it homed befor the printe and then, got me grounding error on the steppers.
Tried resetting a couple of times, made an inspection and found that the 7.5 fuse for the heater and steppers was blown.. Changed it, plugged everything out from the board except power, turned the power on and poof.. ther it goes again..
I know the green power cable connector on the board was a bit loose, so i soldered it a bit but no luck.
Without the fuse and power on I get no VIN reading on the webconsole except the usb power.
I find no bent connectors or blown chips..

Any idea what to check for?