2006 Mac Pro (ModelIdentifier MacPro1,1) - Fans Full Speed at Boot w/ No Video

[rw3]

QUICK: Fans Full Speed w/ No Video, Trickle LED Only

So I have a 2006 Mac Pro and as soon as the power button is pressed, the fans go to full speed and I get no video output. The Diagnostic LEDs on the Logic Board are showing that Trickle Power is good but after 5 seconds I get no LED on the Power On LED.

This makes me think it is a Power Supply. Before I spend $200 on a new power supply, I would like to get some other opinions. Thanks

Ryan

 

[derbothaus]

Have you swapped your memory sticks and/ or removed them. Have you reset the pRAM or SMC? Can you safe boot bypassing the video? SIngle user mode boot?

 

[rw3]

Video Card and RAM have been tested to work in another Mac Pro...so they are not the issue. Also, I have gone through everything in the Apple Technician guide and at this point, power supply seems to be the only thing.

 

[nambuccaheadsau]

First up try a different mains cord, but sure sounds like power supply.

$250.00 pre-loved is about the go and it is not too difficult a job if you can your hands on a service manual.

http://www.dvwarehouse.com/Power-Su...6-2007)-661-4001-614-0383----NEW-p-32680.html

 

[derbothaus]

Video Card and RAM have been tested to work in another Mac Pro...so they are not the issue. Also, I have gone through everything in the Apple Technician guide and at this point, power supply seems to be the only thing.

Cool. Just checking.