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XSeries 236 no power and power units are ok

Our server went on the fritz over the weekend.
It started re-booting without any 'blue' screen and never remained up for but a few minutes.
We eventually unplugged it and the next day for our service rep, it would not start at all.
Seemed like both power supplies died.  We replaced them.
Now, still no power.  No clues as to problem or if we can find a way to diagnose real problem.
Can not see any fried components on the board.

Any suggestions?
In the meantime our rep may see if we can get a drop in replacement.

Wilf
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wilfriedm
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wilfriedm
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lnkevinCommented:
Just santity check:

Is there any led on power supplies?
Do the fans run?
Did you check power cable, switches, power strip, or UPS....?
Did you resit memory?
Did you drain the power by holding the power button for 5 second after unplug the cords?

K
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wilfriedmAuthor Commented:
Is there any led on power supplies? YES
Do the fans run? The power supply fans run.  No other fans run.
Did you check power cable, switches, power strip, or UPS....? YES
Did you resit memory?  (You mean take the modules out and put them back in? NO)  We are doing it now.)
Did you drain the power by holding the power button for 5 second after unplug the cords? NO

Looks like the MB has no power whatsoever.  We tried holding the power button on for ten seconds.
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lnkevinCommented:
The first thing after power supplies power up is the memory. I would take out all memories and put back one dimm and boot it for the first time.

K
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wilfriedmAuthor Commented:
>The first thing after power supplies power up is the memory. I would take out all memories and put back one dimm and boot it for the first

We have put in one DIMM at a time and no power.
We thinking it is the Power Management Chip and may need to be reflashed.
We have started moving the memory, drives and cpu into a used $300 bare box XSeries 236 with no RAM, only 1 CPU and no drives or power units we got in a hurry.  

Of course, we would like to know why this happened and what to do again in the future.
Our business depends on working servers....

Thanks for your suggestions.
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lnkevinCommented:
When you have power cut off suddenly, your memory is out of whack and all the transactions that loaded on the memory are gone. Therefore, when you have the power back, your memory need to be reset blank and the only way of doing it is remove them out of the system and put them back. Sometime, power surge can kill a memory dimm causing server hang on booting bios.

Does this server hook up to any UPS system? Make sure the UPS is still working. Normally, when the server reboots itself just because of the following symtems: power surge, overheat, fans are not running or may be it has been set to reboot after automatic software, OS update....

K

K
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wilfriedmAuthor Commented:
We have moved over all components to replavement boz and everything checks out fine.
All data is ok and RAID works etc.

We thinks it is a fried motherboard component or drive controller.
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lnkevinCommented:
Could be the motherboard issue because if it is a SCSI controller, you should see the memory and other device to boot in bios before getting to SCSI controller. This is the only replacement I have found so far. You can call IBM to see if they offer competitive price.
http://www.chrosmack.com/items/item.aspx?itemid=2878189

K
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