e5-471 no power

[p7comuter]

Re: e5-471 no power

Hello guys i have an update,i already trace shorted components.
+3v rail is now ok,but still wont power
Rsmrst no response always at 0v...any suggestion pls help
Sio replacement is my last option but i wanna make sure before i
Desolder sio chip. How do i know pls any idea?
How do i know if it8587 chip is bad?

[meritosari]

Re: e5-471 no power

RTC_RST# and SRTC_RST# get right voltages?

[p7comuter]

Re: e5-471 no power

Tnx,will update tommorow. What else do i check meritosari

[meritosari]

Re: e5-471 no power

Found more than 2pcs board with RTC problem on this series, ( Sometimes D17 blown too)
Also Check RTC_RST# have more 20Kohm resistance to GND. Hope is approx Mohm value.
if RTC_RST# only 20K, may be hard to fix, till replace SoC.

Good luck!

[p7comuter]

Re: e5-471 no power

update: problem solve!!! thank you guys for support..at the spi bios section i put some jumper at R103,R489,R417,R145,R146..i think i accidentally remove the 2 resistor when i try to remove bios chip thats why my charging light has gone.and think my main problem is shorted caps at +3v rail. thank you guyss
take note guys this board has no always on voltages at bios chip,,if you found voltage before switch it will not power up and will give 0v rsmrst,try to replace resistor or make a jumper..

[SACR]

Re: e5-471 no power

Here are the schematics.

Thank You for this Schematic 👍