Dozer
Member
on all 4 ports the same
PPBUS_G3H 12.26V
PP3V3_G3H is missing
short to GND in PP3V3_G3H
via thermal camera and injection of 2V found damaged C7807
i pulled it from the board, the short is also away, in diode mode i get L7660 Pin 1 0.413 was 0,0
board back in the case with accu, no difference,
PP3V3_G3H is now 0.6V
checked U7650 all pins in diode mode almost like in the boardview (openboarddata)
checked all pins of all 4 ports, all ok
need some help what now ?
PPBUS_G3H 12.26V
PP3V3_G3H is missing
short to GND in PP3V3_G3H
via thermal camera and injection of 2V found damaged C7807
i pulled it from the board, the short is also away, in diode mode i get L7660 Pin 1 0.413 was 0,0
board back in the case with accu, no difference,
PP3V3_G3H is now 0.6V
checked U7650 all pins in diode mode almost like in the boardview (openboarddata)
checked all pins of all 4 ports, all ok
need some help what now ?
