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Old 08-27-2014, 08:24 PM   #125
vborrello
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Join Date: Aug 2014
City & State: Fort Worth, Texas
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Default Re: Dell Precision 470 Workstation

I've got two dead Dell Precision 470 workstations. Both have dual processors. Neither will post. After reading the threads in this forum, I tore into both machines and PSU's. One of the PSU's is pristine inside with no bulging caps. Both mobo's have some bulging caps in the area just in front of the CPU's. I have not yet pulled the boards out of the chassis's.

My questions:
1. What is the best way to test the PSU's for proper functionality? When I jump the green wire to ground I hear the relays in the PSU engage but no fans with or without the case switch on the side of the PSU depressed. Should this be 5V dc?

2. Which caps on the mobo are usually the culprits?

Any help would be appreciated
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