I have an 820-01700-05 that came in for now power. Upon checking the ports, the top 2 ports would get 5V ~200-300mA current draw. Bottom ports would give 0V.
After opening it up, we found the bottom ports' corresponding CD3217 ICs were blown. (PP3V3_G3H_RTC_X shorted on both with visible hole in the ICs)
I replaced both chips from a donor. Same location, same IC, same board number.
Now I get 5V on each port with around a ~250mA current draw.
PPBUS - 12.29V
PP3V3_G3H - 3.3V
PP1V8_SLPS2R - 1.8V
I attempted forcing the system to DFU via an external button. The device goes into DFU mode (1.8V measured on SOC_DFU_STATUS to confirm) , but is not detected by Apple Configurator.
Any thoughts on what to do next?
After opening it up, we found the bottom ports' corresponding CD3217 ICs were blown. (PP3V3_G3H_RTC_X shorted on both with visible hole in the ICs)
I replaced both chips from a donor. Same location, same IC, same board number.
Now I get 5V on each port with around a ~250mA current draw.
PPBUS - 12.29V
PP3V3_G3H - 3.3V
PP1V8_SLPS2R - 1.8V
I attempted forcing the system to DFU via an external button. The device goes into DFU mode (1.8V measured on SOC_DFU_STATUS to confirm) , but is not detected by Apple Configurator.
Any thoughts on what to do next?