Dell Optiplex SX280 Motherboard Replacement

Geschrieben von: Tom
  • Kommentare: 6
Dell Optiplex SX280 Motherboard Replacement

Schwierigkeitsgrad

Difficult

Schritte

31

Zeitaufwand

20 Minuten

Einleitung

Remove the Motherboard from the computer.

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    • Make sure the computer is turned off, by selecting the start menu and choosing “Shut Down”.

    • Ensure all cables, speakers and other devices are unplugged and turned off before opening the computer case.

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    • Lay the computer on its side; you will see a blue knob.

    • Turn this knob 90 deg clockwise.

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    • Slide the panel case forward about 1/2 inch while knob is turned.

    • Lift panel case off computer.

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    • Remove the large blue cover from the computer, there are no screws or tabs keeping it in place.

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    • Press down on the release tab above the heat sink.

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    • Pull the heat sink out of the computer while pressing on the release tab.

    • When reassembling make sure to clean the processor and heat sink of all old thermal paste and apply new paste to the processor

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    • Remove the power supply that connects the upper fan to the motherboard. The power supply has black, red, green and yellow wires.

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    • Remove the rubber grommets from the base of the fan. A spudger may be useful.

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    • Press on the blue release tab and pull the upper fan out of the computer.

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    • Remove the power supply that connects the lower fan to the motherboard, distinguished by it's black, red, green and yellow wires.

    • Make sure to press on the release tab while removing the power connector.

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    • Remove the rubber grommets from the base of the fan. A spudger may be useful.

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    • Press on the blue release tab and remove the fan.

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    • The RAM are the two green cards in the corner of the computer.

    • At each end of the card, there are two white clips securing the RAM to the Motherboard.

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    • Push down both white clips with your thumbs until you hear a click.

    • The RAM cards can now be removed.

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    • Unplug the blue cable that connects the hard drive to the motherboard.

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    • Unplug the power supply, distinguished by its red and yellow wires.

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    • Squeeze the release tabs on either side of the hard drive.

    • Then slide the hard drive out of the computer while squeezing the tabs.

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    • Unplug the cable that connects the hard drive to the Motherboard.

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    • Press on the release tab and remove the motherboard speaker which is attached to the side of the tower.

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    • Unplug the power cable attached to the motherboard speaker.

    • Make sure to press on the release tab while removing the power cable.

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    • Remove four screws located at the back of the computer tower.

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    • Carefully detach the motherboard from the computer case.

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    • Lift the motherboard from the rest of the computer case.

    Thanks a lot :)

    foundedger -

    Hi,

    Excellent guide.

    I have one of these, and i was thinking of opening it up.

    Its sound output disappeared one day. Quite unexpectedly.

    No reason that i could see. Couldn't find anything in the

    settings to make it go again.

    Finally i thought that maybe its 'sound card' had gotten

    jogged, or maybe loose, and needed 're-seating'.

    After reading through your article on the SX-280,

    i now see that it has no 'sound card'.

    It has 'on-board' sound facilities.

    So for me that has pros and cons.

    Pros, i dont need to look for a sound card to re-seat it.

    Cons, i dont know what to do about my lost sound now.

    As to updating the images, i think they are appropriately

    dated to suit this model of PC.

    Pre-Requisites ... Not quite sure what this refers to.

    Maybe a phillips screwdriver is a prerequisite.

    Maybe i missed something, but i dont see that newer pics

    would help at all, but the poster is quite correct about

    this guide, it is very good.

    Regards, John :)

    John -

    REal nice writeup, saved me a lot of guesswork. Thanks a lot.

    JA Reyes, MArch 30, 2015.

    Jose Reyes -

    Fan closer to heat sink

    No need to remove rubber grommets. After pressing blue tap, fan can be moved sideways, towards housing, after about 2 to 3 mmm travel the slots that hold it become wider, and fan, plus blue plastic bracket can be lifted out.

    Same is true for other fan, but more difficult to slide. This fan does not have

    to be removed to get motherboard out.

    Dieter Ast -

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    • Unplug the cable that powers the hard drive, which has orange, red and yellow wires.

    • Make sure to press the release tab while removing the cable.

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    • Unplug the cable that powers the emergency shut off, distinguished by its red wires.

    • Make sure to press on the release tab while removing the emergency shut off.

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    • Remove two screws from the Hard Drive Stand.

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    • Slide the Hard Drive Stand to left side.

    • Remove the stand from the rest of the rear panel.

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    • Remove the studs that support the Hard Drive Stand from the motherboard.

    • The studs can be removed by hand.

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    • Remove the four screws located on heat sink stand.

    • The heat sink stand can now be lifted from the motherboard.

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    • Remove the four screws holding the motherboard to the rear computer panel.

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    • The motherboard can now be removed from the remaining panel.

Abschluss

To reassemble your device, follow these instructions in reverse order.

Tinte & Feder

Tom

Mitglied seit: 04/10/10

829 Reputation

2 Kommentare

Good job. Thanks for sharing, friend.

Angel Peguero -

Great guide! I got stuck at the Mobo tray, I knew the black screws were involved but couldn't get it with out help. Thanks!

Fans can be removed with board tray, otherwise they're getting pulled off their rubber isolating feet. Once out with the mobo, the fans slide off the board tray with their plastic shoes attached.

purchases -