820-02016 no power

[Kyle93]

This arrived with minor liquid damage in Q5240 area and pin 1 of JP600 with no power.

After reflowing corrosion in Q5240 area board was working again but after a few minutes screen went on and off a few times and now board cant get past 5v. Screen cable is burnt.

Diode mode on LPD_INT_AUX_C_N is 0. Does it sound like 50v from backlight killed the CPU?

 

[2informaticos]

Do you have short to ground at LPDP_INT_AUX_C_N, w/ and w/o LCD connected?
You may need to remove JP600, to discard it.

 

[Kyle93]

Yes short to ground LPDP_INT_AUX_C_N w/ and w/o LCD.

can JP600 only cause 5V ?

 

[2informaticos]

If the short is on M1, you can expect any weird symptom...