820-4924 - A - No fan spin - Green / Orange light present

[vaswaniraj]

Hi Team,

I have a MBP early 2015 A1502. When the computer power button is pressed the chime is heard but nothing seen on the screen.

Customer mentioned that they bought a Chinese Charger as the original charger was not available in the store.

Inspected the board and found that some solder balls were found near the CAPS that belong to the PPVOUT_S0_LCDBKLT - namely - C7766 / C7767 / C7768 / C7769 / C7770 / C7771 / C7772.

These are the power rails that I checked so far and here are my readings.

PPBUS_G3H - 12.56v
PPDCIN_G3H - 16.83v
PP3V42_G3H - 3.43v
PP5v_S5 - 5.03v
​PP5v_S3 - 0v
​PP5v_S0 - 0v
PP3V3_S5 - 3.34v
PP3V3_S0 - 0v
PP3V3_S3 - 0.18V
PP3V3_S4 - 0v
PP1V8_S3 - 0v
PP1V2_S3 - 0v
PP1V5_S0 - 0V
PP1V05_S0 - 0V
PPVCC_S0_CPU - 0V

Am I missing anything. Further help would be appreciated.

Thanks and Regards,

Raj.

 

[dukefawks]

So the machines chimes yet there is no voltages on any S3 and S0 rail. It must be haunted!