870-01779 turn on but only backligt comes up then switch off in a loop

Dozer

Member
hello,

I got this machine.

all LEDs to see one by one. after turnes on last led backlight switches on holds a second then turns off completly , all leds off and start again...

ssd has 2.5V

DFU possible to see , revive is not working because I think of the bootloop. It ends up with the dashed box and then with a lock icon. but there is nothing new realy installed.

I dont know where to start here. I think the power unit and Display should be ok, Bootloop is also without display (except the last led of course)


I had from Harald the USB Tester and I can see the blinking green light before all turns off. Need some help here please
 
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