Proliant 1600 Boot Power Issue

[simongray]

I am trying to bring back a ProLiant 1600 into service. In its present form, it has a single PII with 256MB RAM, and RAID Array and a redundant hot swappable PSU.

When I cycle the power, the LEDs come on for a couple of seconds and then power down again. After a gap of about 6 seconds they come on again and then power down. If you leave the machine long enough (about 1 hour), the timings gradually reverse, ie the "on" period increases to 6 or 7 seonds and the "off" period decreases to about 2 seconds. Eventually, as the "on" period gets longer, it boots.

I have changed the processor power regulator with no visible improvement. I have reseated all the components, one by one and disconnected the peripherals (disks, CD, RAID Array) for the minute.

As the problem is still not fixed, I am now looking at the PSU (the three redundant elements), the PSU cage and backplane, the system board, the processor, the SCSI backplane and perhaps the IO card. I am happy to replace one of these, but understandably reluctant to replace all of them - does anyone have any clues as to what might be going on, and how to fix it or views on which part I should try and replace first?

Thanks in advance

sg

 

[Sunny79]

If your keyboard is blinking at the same intervals as the server power down sequence, this is a power supply issue. If you are using the hotpluggable power supplies just go ahead and replace the power supply cage and you will be ok.
Good Luck.