Question about Dell PowerEdge 1800 Server

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Cannot get PE1800 to boot. Was working fine. Replaced two 2.8ghz processors with two 3.6ghz processors (SL7PH, per Dell tech support). Monitor would not come on. Removed RAM, per Dell - no beeps. Dell tech said possibly bent pin on replacement processor must have shorted out motherboard. Replaced motherboard (ver 2) with BRAND NEW motherboard (ver 3), again - per Dell tech support. Replaced both 3.6ghz processors with brand new ones. (Dell tech said we may have shorted out both the motherboard and the processor). Now, with a brand new Dell X7500 motherboard and brand new SL7PH processors, computer still won't boot. Same problem (monitor doesn't seem to receive any signal) only now the fan doesn't kick into high speed when booting, either (it did before). Now Dell techie says to replace the PDB/PDU. I hesitate to spend more $$$ if success is unsure. Any ideas?

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  • Mark Waterhouse Sep 11, 2010

    Already did that - no luck. This is a brand new Dell motherboard - came sealed in Dell electrostatic bag. It's odd that I'm having the same exact issue with the new board as the one that Dell said has probably shorted out.

  • Mark Waterhouse Sep 13, 2010

    Hi - Don't know if you got my prior reply as I can't find it on the fixya website. This is, however, my first time with fixya and maybe I just can't find it. So if this is a duplicate, please forgive.

    Do you mean I should replace the PSU before replacing the PDB (PDU)? This server has a redundant power supply (two power cords), both with green lights. The lights on the control panel also light up. Before purchasing a new Power Supply Unit I just wanted to confirm that I should start with the PSU and not with the Power Distribution Unit. I've already found a PDU, although I haven't ordered it yet. I will search out a new PSU while I wait for your reply.

    Thank you, once again, for your help. You've been much more knowledgeable than any of the 5 Dell techs that I've contacted. I appreciate your time.



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I would wonder if your PSU, may be faulty, Please replace it, ALWAYS start with the Power Supply, as if this ins't 100% A OK, NOTHING else can be right, so that's always the first place to start. One MUST get "Known Good" bits, to work with, then add know good bits together and it MUST work, just be methodical, and go small step, test, add, small step test add.. and so on..
I doubt you have bent pins or anything such, you seem very competent, so work through it with you manual. Also it would be beneficial if you tried to get a Service manual from Dell, this will assist you a great deal in troubleshooting.

Now IF you are sure all is A OK. then move on to the MB & RAM, with NOTHING else connected, Hook up the PSU, MB, CPU. ONE stick of RAM. NO HDD No DVD No Nothing else.
Now try to boot, if it does then add the other devices and all should be good.
Now if it doesn't, then.. try a NEW stick of RAM NOT one of the ones you have now, a NEW one.
If it boots now, all good, add as before. If it doesn't boot at all. Then remove the CMOS battery for a few mins, and replace and try again, now check you MB manual, and see if there are any keys that can be held down during boot, that can get you into a boot mode.
As an aside here try to get the MB going FIRST with the OLD CPU, if possible. Then, when it's all working, replace the Processor, see what happens.
Now Have you checked any all jumpers if any on the MB, are they all set correctly, check your MB manual, I have included a copy below for your convenience, Make sure everything is setup correctly first.
Try getting it up and running with a single CPU, then shut down and ADD the other CPU, just take it little steps ... and build it up as you prove each GOOD bit, then ADD another piece, and so on, until you have a working PC.

Posted on Sep 12, 2010

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Hi. Since this is almost a new system that you just setup. Try to drain the elctrostatic energy of the mainboard. Take out the battery and unplugged the power adapter. Press and hold the power button for 30 secs then turn ON the computer. if nothing happens then this could be a motherboard issue.

Posted on Sep 11, 2010


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