简介
This monitor stopped turning on.
你所需要的
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The u3014 monitor opens the same as most other recent Dell monitors.
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First remove the stand.
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Remove the bezel. This can be done by hand and a plastic knife. Approaching the screen from behind, peel the bezel with your fingers (photo).
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The rest follows quite easily, but in the corners you might need to insert a blade or similar to pry open the clips.
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When removing the bezel, be careful with the control panel (stuck in place with glue, covered with glued-on strip) and power-button (2 screws).
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Remove the connectors. Black cable to backlight (push clip and pull). Two multi-color cables to LCD (push in the sides and pull). Power and control ribbon (pull). USB hub power (push clip and pull). USB ribbon (lift flap and remove).
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The frame with PCB is held in place just by metal tape.
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The USB hub is completely loose.
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To solve power on problems, inspect the board. In my case there was a cold solder joint that actually showed a little spark when plugged in (photo Q816). Re-soldering fixed it. Your case might be harder to find and fix.
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Many repair guides talk about replacing all capacitors rather aimlessly. In this monitor they used Nichico caps which are very reliable. So that is an unlikely fix.
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Be extremely careful fixing these switching power supplies, even more so in Europe where one has 230V. Discharge capacitors etc.
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If you liked this guide, contribute your own.
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If things are unclear, leave a comment.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
5等其他人完成本指南。
