820 3023 water damage

EJS

New member
820 3023 No power, i have green light on mag safe, quarter fan spin, board looked over all in good shape, I replaced Q5060, it was the only spot corroded. Can't find any shorted lines.

PPBUS_G3H 8.41v
PPVIN_SW_T29BST pulsing .121v-.007v
PPVIN_S5_COMPUTING_ISNS 8.41v
PP18V5_DCIN 16.41V
PP3V42_G3H 3.41V
PPVRTC_G3_OUT 3.30V
PP5V_S5 5.02V
PP5V_SUS_FET 5.02V
PP5V_S3 0V
PP5V_S0_FET pulsing .245v-.026v

T29_PWR_EN pulsing 2.2v-.089v
 
Last edited:

dukefawks

Administrator
If Q5060 was corroded there is likely crap under the SMC or the termination resistors from U6100 are corroded (R5110 and friends, 12pcs)
 

EJS

New member
Thanks Duke, you are the man! It was R5111, pad on SPI_CLK_R was shot, running now.
 
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