Hi. Have an A1708 in for repair that is not charging.
1) Found that the battery mosfet will wake up the logic board ok and display the 'plug me in' icon to charge the box.
2) upon plugging in the external type C charger, see 20v but still fails to charge the box.
3) Removed the battery and using only the charger, PPBUS_G3H is 1v0 and depleting.
4) Using resistance mode, pin 12 (gate) & pin 7-8-9-10 (drain) = 1.9 ohms on Q7030 (first mosfet). Appears to be shorted but will confirm when it is off the logic board.
We will replace it. Want to have more of these in stock. Anyone have any luck in subbing these parts (FDMD8800) ? Otherwise, will source from Aliexpress.
1) Found that the battery mosfet will wake up the logic board ok and display the 'plug me in' icon to charge the box.
2) upon plugging in the external type C charger, see 20v but still fails to charge the box.
3) Removed the battery and using only the charger, PPBUS_G3H is 1v0 and depleting.
4) Using resistance mode, pin 12 (gate) & pin 7-8-9-10 (drain) = 1.9 ohms on Q7030 (first mosfet). Appears to be shorted but will confirm when it is off the logic board.
We will replace it. Want to have more of these in stock. Anyone have any luck in subbing these parts (FDMD8800) ? Otherwise, will source from Aliexpress.
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