bighead
New member
Hello,
I've this board here with the on/off loop problem.
No liquid damage.
PP5V_S0 present when it tries to turn on for a sec. Fan spins up.
Every power rail comes up for a sec except CPUVCORE.
I tried different BIOS.
I've 1.2V on on Y2605, but I can't see it oscillating. I changed the crystal and U2600. No change.
Checked RTC circuit to PCH(R1800-R1803) and everything seems fine.
No short on PP5V_S0 or on S3 rails. SYSCLK_CLK32K_RTC is present.
ALL_SYS_PWRGD goes high - 3.3V
PP3V3_SUS is present.
Checked the resistors on the SPI line(R5110-R5112,R5123).
What am I missing?
Thank you.
I've this board here with the on/off loop problem.
No liquid damage.
PP5V_S0 present when it tries to turn on for a sec. Fan spins up.
Every power rail comes up for a sec except CPUVCORE.
I tried different BIOS.
I've 1.2V on on Y2605, but I can't see it oscillating. I changed the crystal and U2600. No change.
Checked RTC circuit to PCH(R1800-R1803) and everything seems fine.
No short on PP5V_S0 or on S3 rails. SYSCLK_CLK32K_RTC is present.
ALL_SYS_PWRGD goes high - 3.3V
PP3V3_SUS is present.
Checked the resistors on the SPI line(R5110-R5112,R5123).
What am I missing?
Thank you.