820-3332 Backlight issue

[mastak07]

I'm trying to diagnose a no backlight on a 2012 15" Macbook.

When I measure voltage on pin 3 of q9706 the backlight turns on, as soon as I take the multimeter off pin 3 of q9706 the backlight turns off again.

Should I replace q9706 ?

 

[2informaticos]

Post voltages for both Q9706/07.

 

[mastak07]

Q9706 Pin 3 .98v, Pin 4 11.7v and 0v on 1,2,5,6

Q9707 Pin 2 0.7v, Pin 3 3.24v and 0v on 1,4,5,6.

 

[2informaticos]

Please, count the pins correctly and post REAL values...

 

[mastak07]

Q9706
Pin 1 - 0v
Pin 2 - 0v
Pin 3 - 1v
Pin 4 - 11.7v
Pin 5 - 0v
Pin 6 - 0v

Q9707
Pin 1 - 0v,
Pin 2 - 3.2v
Pin 3 - .7v
Pin 4 - 0v
Pin 5 - 0v
Pin 6 - 0v

 

[2informaticos]

Q9706 is bad; if posted voltages are correct.

Very strange values posted, I doubt a lot about them.

Change both Q9706/07.