820-01700-05- Water Damage No Boot

LCDR2

Member
Hello

Board is obviously corroded in about 5 places.

Power supplies 20v, 0.04 amps on all 4 ports after a little clean with Qtip.

I have a schematic diagram but not the board view file. Will search for this and try to update rails.
 

LCDR2

Member
got my board file!

Do you have a troubleshooting guide for this model?

PPBUS_G3H - 12.42v
PP5V_G3S 5.3v
PP3V3_G3H_T 3.46
PP1V8_G3S 1.8v

20.3v, 0.06a on all USB ports. Board only, no battery connected.
 

2informaticos

Administrator
Staff member
It is not critical.
But liquid sign around U7800 no good at all.
CPU, or T2 can be damaged.

Is the machine detected in DFU mode?
 

2informaticos

Administrator
Staff member
Be aware, the second machine MUST have the same macOS installed as in T2 machine.
Try with Catalina, as Big Sur too.

Do you get all SLPS2R and AWAKE voltages?
 
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