Dell Optiplex 9020 AIO - Powers up but Black display

Discussion in 'General Hardware' started by qwertyaas, Aug 7, 2018.

  1. qwertyaas

    qwertyaas Gawd

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    Powering on the Optiplex 9020 AIO, the display remains black. No splash screen, no BIOS, not even a screen flash

    • Tested PSU and works

    • Tested display with Dell built in test and display works and shows all colors

    • Fans all spin up and remain spinning

    • Power button remains solid white while turned on

    • Removing Ram - system goes through the beep error codes

    • Reseated Ram

    • Tried external monitor and nothing

    • Did a GPU reflow on the chip with a heat-gun but did not have an IR thermometer on me - went gradually to 210C and held that temp around 3-4Inch away for 20 seconds and then gradually back down

    Took apart the AIO and checked all connections and all looks plugged in.

    Any ideas?
     
  2. defaultluser

    defaultluser I B Dum

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    Toss it in the trash bin and buy another like you're supposed to?

    That's what thees things are built for. You've already done more troubleshooting than an over-the-phone tech would have done before giving up and sending you a refurb replacement.
     
  3. qwertyaas

    qwertyaas Gawd

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    Where's the fun in that? :)

    But at this point, guess it's time to salvage whatever is in there and toss the rest.
     
  4. GiGaBiTe

    GiGaBiTe Limp Gawd

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    +1 for defaultuser's suggestion of tossing it in the trash.

    If it wasn't totally dead before you got the genius idea to fry the machine with a heat gun, it is now.

    Heat gunning a board is not reflowing, especially if no flux is used.
     
  5. qwertyaas

    qwertyaas Gawd

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    Heat gunning GPUs on a board worked in the past. I never used flux when doing that on a GPU either - it revived quite a few cards.

    But anyway, tossing it. Nothing lost other than a some time.
     
    Last edited: Aug 8, 2018
  6. GiGaBiTe

    GiGaBiTe Limp Gawd

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    It doesn't work, it's just a temporary fix. The solder gets tacky enough to make a weak connection, but any tiny amount of thermal stress will cause it to fail again.

    At best it lasts a year or two, a worst, a few weeks or months.

    ROHS solder is junk.
     
  7. Gordo74

    Gordo74 Gawd

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    Really dumb suggestion - Plug in a USB keyboard. My Optiplex 9010 exhibits the same behavior without one.
     
  8. qwertyaas

    qwertyaas Gawd

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    Yeah tried that first.
    It was just needed for temporary fix anyway. But it didn't work so in the trash it went. My GTX460 lasted well over two years after I baked it, but at that point it was time to upgrade that GPU anyway.