A1466 - not charging, PPVBAT_G3H_CHRG_R short to ground

[tawnytim]

This device is taking no current. I've got C7117/1 short to ground, but when I inject .9v, I got no current draw on my power supply. Thoughts?

 

[2informaticos]

A1466 used several boards.
Can't you post MLB code?

 

[tawnytim]

Sorry 820-00165-A

 

[2informaticos]

Remove F7140 and check where the short remains.
If is on PPBUS_G3H, check if any big coil gives the same reading to ground.

 

[tawnytim]

Short is gone with F7140 removed. So that means it's on PPBUS_G3H. right? Also, I am not having short to ground on any large coils.

 

[2informaticos]

In such case, is safe to use voltage injection method.
Anyway, start with just 1V...

 

[tawnytim]

The short disappeared! So I put the board back into the device and powered it up. After booting, I shut it down, and now the short is back. Very odd.

 

[2informaticos]

Did you remove charger and battery to check that "short"?
Allow 10-15s before checking diode mode, or ohm scale; once power is removed.

 

[tawnytim]

Yes, I did. I have 0 ohms @ F7140.

 

[tawnytim]

Alright, I have no idea what is with this board. After letting it sit 30-40 min, now there is no short. I'll be back if this turns into something else.