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:
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Lay the display on a desk with the front facing down. Best use a towel to save the desk and display from scratching.
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Unscrew the four hex screws that secure the stand.
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Starting opposite of the buttons, pry open the display bezel with a plectrum.
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You have to apply some force.
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Don't lift the rear panel higher than two centimeters. There are delicate flat cables on the button side which might be damaged.
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Be extra careful at the buttons, you don't want to damage a cable.
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Unplug the USB cable of the card reader.
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Remove the rear cover.
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There are two black connectors below the cover.
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Unplug both and treat with contact spray.
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Plug both back in.
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Reassemble the display.
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You should be fine for a while. Notice that the corrorsion might return in a few months.
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Now remove the two screws of the side panel.
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Lift the flat cables gently of the panel.
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remove the panel.
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Remove the four screws that hold the main metal box in place
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Gently lift the flat cable where it is glued onto the right side of the screen.
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Lift the metal box from the right side
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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26 Комментариев
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!!
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!
Took about 10 minutes .... first repair after having this monitor since they were first released ..... Back to loving my Dell again :)
