MacBook Air A1466 2017 no Power via MagSafe

[mon2]

Re: MacBook Air A1466 2017 no Power via MagSafe

No. Not till a voltage higher than this zener is reached, the zener remains out of circuit.

Remove all power. Meter in resistance mode.

Check :

Source and drain
Source and gate
Gate and drain

Of mosfet Q7010. If you have a donor of this part, replace it. Confirm the resistance of the resistors mated to this mosfet.

[Strolch]

Re: MacBook Air A1466 2017 no Power via MagSafe

I do not quite understand. what should i measure it from?
check :
Source and drain
Source and gate
Gate and drain

and I take the Q7010 from another board.

[mon2]

Re: MacBook Air A1466 2017 no Power via MagSafe

Meter in resistance mode. Check the resistance across source and drain pins of the mosfet.

The pin function are shown in above posted schematic as S, G, D.

Then measure the other combinations and post the measurements here. We are checking if the mosfet is defective with a low resistance check.

[Strolch]

Re: MacBook Air A1466 2017 no Power via MagSafe

Hi, :-) thx we made it together. It was the R7012 defective! I exchanged it and now the LED lights up green and orange and I have my 16.4 volts