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[help]820-01521 WATER DAMAGED

P

phantom

Member
HELP! audio board+its flex+powerbtn flex water damaged (an hole on audio board)!!! chnged both, but i have 5v on both ports:

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mov: IMG_3478.mov

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here some measurements

ppbus_g3h 12,29v
PP3V3_G3H 3,29v
pp3v3_upc_xa_ldo pp3v3_upc_xb_ldo 3,27v
PP1v8_UPC_XB_LDOD PP1v8_UPC_XA_LDOA 1,8v
PP1v8_UPC_XA_LDOD PP1v8_UPC_XA_LDOa 1,8v
PP1V1_UPC_XA_LDO PP1V1_UPC_Xb_LDO 1,1v

with battery connected, as soon as i connect the cable, i see direclty 20v, but stuck at 0,0250
 
Last edited:
2informaticos

2informaticos

Administrator
Staff member
T2 possibly damaged by overvoltage through its data lines connected to audio board.
Check diode mode to ground at SPKRAMP_RESET_L and SPKRAMP_INT_L.
 
2informaticos

2informaticos

Administrator
Staff member
Several people reported working machines, only missing audio, after audio board/flex corrosion.
As your own doesn't even turn on, there must be more damage.
Even if you fix that, still no sound at the end; is it worth to continue?

BTW, did you test the MLB with audio flex disconnected?
 
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