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Yaniv SchiffFlag for United States of America

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No video output using onboard video or PCI card

I have a machine that won't display any video. I have gone through some troubleshooting steps already and haven't gotten anywhere. Here's what i have done so far.

Removed all add-in cards
Unplugged all devices (HD's, Floppy, Optical Discs)
Removed memory
Reset CMOS (removed battery and used jumpers)
Put in PCI video card

I get a single beep at startup.

So right now all i have trying to boot up is the motherboard and a couple of fans.
Here are the specs.

SuperMicro X6DVA-EG
Duel Intel Xeon 1.8Ghz processors
4 x 1Gb DDR400 RAM (removed)
Intel Pro 1000-MT NIC
Intel 6300ESB Ultra ATA Storage -SATA Controller-25A3 (Removed)
Ultra IDE Controller (Removed)
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David-Howard

Nice troubleshooting so far Forensicon.
This is the second issue like this in two days here.
You may try some of the steps in this link.
http://docs.info.apple.com/article.html?artnum=300537
David
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Remove the NIC card also, if it is separate.  Take the motherboard out of the case, to avoid possible shorting.  Swap the power supply.  If none of these work, you may have a faulty motherboard.
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Thanks David. I don't think apple will be able to help me very much. I am using a new monitor and vga cable that i know work. Any other thoughts?
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David-Howard

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Yeah, i think you're probably right about the board. There is no sign of burn mark or busted cap's. I think i'm resigning myself to send it back to the manufacturer.
Sounds like a solid idea especially if it is under warranty.
Have a good weekend.
David
Thanks for the help david.