820-3662 no chime no video

[borderhunter]

This board water damage
isl change ok

PPBUS_G3H 12.26V

PP3V42_G3H 3.38V

PP3V3_SUS 3.3V

PP3V3_S5 3.32V

PP3V3_S3 3.32V

PP3V3_S0 3.32V

PP5V_S5 5.04V

PP5V_S4 5.04V

PP5V_S3 5.04V

PP5V_S0 5.04V

PP1V35_S3 1.35V

PP1V35_S3_MEM 1.35V

PP1V35_S3RS0_CPUDDR 1.36V

PP1V35_S3RS0_FET 1.36V

PP1V5_S0 1.5V

PP1V05_S0 1.05V

PP1V05_SUS 0.76V / 1.05V

PPVCC_S0_CPU 1.68V

PPVTT_S0_DDR 0.68V

PPVTTDDR_S3 0.68V

 

[dukefawks]

USB mouse lighting up?

 

[borderhunter]

Yes a have light

 

[dukefawks]

Board is working. Hold a flashlight to the Apple logo and check if there is a picture.

 

[borderhunter]

I check now but no picture
and reset pram make

no chime no picture no video no external video

 

[dukefawks]

Did you try a PRAM reset with external keyboard? Internal one may not work. Chime should be present after PRAM

 

[borderhunter]

İ know
Same problem
another idea ?
i check now cpu not warm

 

[dukefawks]

You say CPU Vcore is 1.68V, it should get warm a little.

 

[borderhunter]

I'm sorry no voltage PPVCC_S0_CPU 0 voltage

 

[2informaticos]

Then the mouse doesn't light too...
Check ALL_SYS_PWRGD signal.

 

[dukefawks]

No way a USB mouse will light up when there is no CPU Vcore. You said PPVCC_S0_CPU 1.68V?