A1502 820-3536-A Green Light no power

iFix

Member
Hi Guys.

i Have this A1502 green light no power issue. ALL_SYS_PWRGD is not there on U1950 and PP5V_S0 is 0.17v... any suggestions please

Thanks :D
 

2informaticos

Administrator
Staff member
Welcome to the forum.

Do you get 3V3_S5/SUS?
Please post basic information, if you want to get help.
Any history fault available?
 
Last edited:

iFix

Member
Hi 2informaticos.

NO liquid damage just stopped on it's own.

i have PP3V3_S5 3.3v and also PP3V3_SUS 3.3v present and also PP5V_S5 and PP5V_S4.

PP5V_S0 is not present, but after speding some more time on it i noticed that R5530 has a bit of corrosion and i need to look into it. I'll update on the status and if needed some help.

Thank you very much
 

2informaticos

Administrator
Staff member
R5530 is current sensor for 5V_S0 power rail.
Check traces to U5530.
If resistor is good, board should start in SMC bypass, if there is a problem with that sensor.
 
Top