Dell Optiplex 790 power supply

I’ve written previously about the problems I’ve been encountering recently with new Dell equipment. It has continued in the past week.

Our initial order of Dell Latitude XT3 tablets was twenty-four. So far, we’ve had to have Dell out to repair four of those. That’s a 1 in 6 repair rate. Now from a second batch of a dozen or so, the failure rate is continuing. Three of those have had DOA events. Two had LCD problems, where they either worked sporadically or not at all, and another had a disk drive that immediately failed.

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Now I’m fighting with the Dell Optiplex 790. From an order of eleven, three power supplies have died so far with either blinking amber power lights or no lights at all. An issue similar to this happened years back with the Optiplex 620s, 270’s and 745s.

Is anyone else seeing these problems with their Optiplex or XT3 systems?

[EDIT: 12/28] Fourth just died yesterday. 4 out of 11 failure rate now.

By |2015-03-03T07:17:59+00:00December 13th, 2011|computers|7 Comments


  1. Wyoming user March 20, 2012 at 10:23 am - Reply

    Out of a 110-unit order of Dell Optiplex 790 slimlines back in August 2011, we have had about 15-20 power supply failures so far. Dell will quickly repair them, but won’t let on if there’s a problem with this model’s power supply. It’s almost always the power supply, sometimes it’s the board and power.

    We are a K-12 school district and have decided, because of other issues, to stop buying Dell laptops (switching staff to IPads). We’re starting to wonder if we should be finding another desktop vendor as well.

  2. TD January 4, 2012 at 6:29 pm - Reply

    One of my 3 week old USFF 790’s just died – crackling sound and a electrical burning smell. Now it has a flashing amber lightt, no post, no diagnostics, no video. Dell is pretty quick to get a new powersupply out but, sheesh, come on! Only have a couple in production, but I will definitely look at another model when it comes time to order more.

  3. Bill H December 20, 2011 at 4:39 pm - Reply

    Tech is coming to replace power supply and motherboard. Here’s to hoping he only has to make one trip for the 12 computers!

  4. Bill H December 20, 2011 at 4:11 pm - Reply

    I’m preparing a 790 now to be rolled out. I got halfway through preparing it and now I have the dreaded blinking amber light. Will call support. I’ve already rolled out three others without problems and I have eight more to go. The one that failed is a desktop form factor while all the others are minitowers. Have your 790s been desktops or minitowers?

    • bbowers December 20, 2011 at 4:15 pm - Reply

      Mine have all been minitowers so far

  5. Jay H December 20, 2011 at 11:59 am - Reply

    I’ve just had my 2nd 790 fail Blinking amber light. I’m going to push this up to my account manager, (you get what you pay for… )

  6. Brad December 14, 2011 at 12:07 pm - Reply

    Our 790’s are very new and they are starting to drop like flies, 3 this week from bad power supplies.

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