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Введение

The Dell U2711 Monitor has a problem with unstable contacts due to corrosion. The symptom is a flickering screen. Knocking on the top of the monitor can make this symptom go away for a while, but a longer term solution is to clean the contacts.

The problem can be seen in this video:

https://www.youtube.com/watch?v=_En6ih88...

Запчасти

No parts specified.

  1. Lay the display on a desk with the front facing down. Best use a towel to save the desk and display from scratching.
    • Lay the display on a desk with the front facing down. Best use a towel to save the desk and display from scratching.

    • Unscrew the four hex screws that secure the stand.

  2. Starting opposite of the buttons, pry open the display bezel with a plectrum. You have to apply some force. Don't lift the rear panel higher than two centimeters. There are delicate flat cables on the button side which might be damaged.
    • Starting opposite of the buttons, pry open the display bezel with a plectrum.

    • You have to apply some force.

    • Don't lift the rear panel higher than two centimeters. There are delicate flat cables on the button side which might be damaged.

    • Be extra careful at the buttons, you don't want to damage a cable.

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  4. Unplug the USB cable of the card reader.
    • Unplug the USB cable of the card reader.

    • Remove the rear cover.

  5. Remove the shiny cover in the middle.
    • Remove the shiny cover in the middle.

  6. There are two black connectors below the cover. Unplug both and treat with contact spray. Plug both back in.
    • There are two black connectors below the cover.

    • Unplug both and treat with contact spray.

    • Plug both back in.

    • Reassemble the display.

    • You should be fine for a while. Notice that the corrorsion might return in a few months.

Итог

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

20 участников успешно повторили данное руководство.

Jeho

Участник с: 15.09.2015

671 Reputation

1 Guide authored

14 Comments

This sounded too good to be true, but it worked for me. Start with the corner away from teh power button and really have to force it apart. Just not too far apart!

Be careful with the connectors too. I left a broken piece of plastic in my monitor.

Kevin - Ответить

Worked for me too!!! Ended up with slightly chipped casing... but who cares! i now have a as-good-as-new screen image....

So glad i found this post... was initially exploring replacing capacitors method.... but didn't start..... glad i do not need to go to that route anymore.

For anyone looking for this, you should have 1) an electrical contact cleaner and 2) TORX screwdriver!!

Danny Tan - Ответить

Once I took my U2711 apart, the connectors didn't look too corroded (in fact, they looked fine) but the process of cleaning them and unseating the connectors has fixed the flickering! Thanks a lot! took me about 15 minutes!

Anthony Sist - Ответить

Took about 10 minutes .... first repair after having this monitor since they were first released ..... Back to loving my Dell again :)

Martin Suckling - Ответить

Anyone know a way to open these w/o any damage? Mines mint and its a monitor my dad gave me before he died so I am on a mission to get it fixed or fix it myself which ever gets me the best results...

Neccros - Ответить

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