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Introduction

This monitor stopped turning on.

  1. Dell u3014 monitor  repair. Power on problem., Removing bezel: step 1, image 1 of 2 Dell u3014 monitor  repair. Power on problem., Removing bezel: step 1, image 2 of 2
    • The u3014 monitor opens the same as most other recent Dell monitors.

    • First remove the stand.

    • 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).

    • The rest follows quite easily, but in the corners you might need to insert a blade or similar to pry open the clips.

    • 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).

  2. Dell u3014 monitor  repair. Power on problem., Isolating the PCB: step 2, image 1 of 2 Dell u3014 monitor  repair. Power on problem., Isolating the PCB: step 2, image 2 of 2
    • 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).

    • The frame with PCB is held in place just by metal tape.

    • The USB hub is completely loose.

  3. Dell u3014 monitor  repair. Power on problem., Fixing the problem: step 3, image 1 of 1
    • Caution: The circuit board contains capacitors (they look like cylinders) that can shock you if they discharge. Be careful not to touch them as you work. If possible, use a capacitor discharge probe to safely rid the capacitors of dangerous charges.

    • 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.

    • 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.

    • Be extremely careful fixing these switching power supplies, even more so in Europe where one has 230V. Discharge capacitors etc.

    • If you liked this guide, contribute your own.

    • If things are unclear, leave a comment.

Conclusion

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

5 other people completed this guide.

Mark

Member since: 09/05/2018

400 Reputation

3 Guides authored

2 Comments

what was the problem with this monitor?

Jason - Reply

This one had a power-on problem. I can’t remember if the power led came on at all.

I have now edited the text.

Mark -

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