SUS Z87-K does not trigger repair

ASUS Z87-K does not trigger, and O is found during measurement_ PSON#_ R The line is broken, so the fly line, the fault basis, can be triggered by pulling off the BIOS.

Machine model: ASUS Z87-K

Fault phenomenon: no triggering

SUS Z87-K does not trigger repair Figure 1.

Maintenance process: The motherboard is old and has a bit bit bit map. The 11 conditions for standby are normal, and the IO is NCT5538D. Measure 30 pin O_ PWRBTN#_ R. 29 pin O_ IOPWRBTN #, there is a jump when the voltage is triggered normally, O_ SLP_ S3#_ R has 3.3V. O_ PSON#_ The R voltage of 3.5V is abnormal, and the trigger is not pulled down. Measurement discovery O_ PSON#_ R Broken line, if the broken line is found in the running line, the flying line shall be solved.

SUS Z87-K does not trigger repair Figure 1.

Measure O again_ PSON#_ The R voltage is 5V, which is normal. Thought it could kill seconds, but the fault is still the same_ PSON#_ R cannot be lowered. All conditions for measuring IO are normal, O_ PSON#_ R cannot be lowered. It is judged that the IO is damaged, but there is no IO on hand. Do not turn your eyes to the BIOS. If you pull the BIOS off, it can be

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