Macbook Air A1466 820-3437

[Instafixx]

Hello,
Namaste.

I have a Macbook Air A1466 820-3437. After turning it off and keeping it away for 10 min, it wont turn on again until the Battery Connector isnt plugged and unplugged. But if it is turned on immediately after switching off, it turns back on. Very weird issue.

PPBUS is 9.42V - Seems very high.

[mon2]

Re: Macbook Air A1466 820-3437

Remove all power. Meter in DIODE mode. Check the operation of the dual diode @D7005.

[Instafixx]

Re: Macbook Air A1466 820-3437

Remove all power. Meter in DIODE mode. Check the operation of the dual diode @D7005.

Resistance to Ground
D7005

Meter set to 2K Scale

Pin#1 is .129
Pin#2 is 1
Pin#3 is .355

Replaced the Trackpad flex cable. Now the problem seems to have gone. But the PPBUS is still very high - 9.7V

[mon2]

Re: Macbook Air A1466 820-3437

Are you using an official power adapter?

What are the voltage to ground readings for each pin of D7005?

Is the 3v42 rail stable?

Confirm the voltage to ground of the SMBUS pins mating with this ISL device.

The ISL regulator may be defective.

[dellxps15]

Re: Macbook Air A1466 820-3437

is 9,42volt stable or fluctuate fast ? all without battery.