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NEC LCD1770NX Power Input Replacement

Introduction

Replacing the Power supply will require soldering

What you need

  1. NEC LCD1770NX Power Input Replacement, Stand: step 1, image 1 of 2 NEC LCD1770NX Power Input Replacement, Stand: step 1, image 2 of 2

    • Place the monitor face down on a clean, flat surface.

    Edit

  2. NEC LCD1770NX Power Input Replacement: step 2, image 1 of 2 NEC LCD1770NX Power Input Replacement: step 2, image 2 of 2

    • Firmly remove the back panel of the stand by pulling it up and away from the monitor.

    Edit

  3. NEC LCD1770NX Power Input Replacement: step 3, image 1 of 2 NEC LCD1770NX Power Input Replacement: step 3, image 2 of 2

    • Unscrew the two 6mm Phillips PH2 screws to detach the stand enclosure from the stand.

    Edit

  4. NEC LCD1770NX Power Input Replacement: step 4, image 1 of 2 NEC LCD1770NX Power Input Replacement: step 4, image 2 of 2

    • Firmly grasp the stand enclosure with your hand and slide it to base of stand.

    Edit

  5. NEC LCD1770NX Power Input Replacement: step 5, image 1 of 1

    • Unscrew the two 14.5mm Phillips PH2 screws holding the stand to the monitor.

    Edit

  6. NEC LCD1770NX Power Input Replacement: step 6, image 1 of 2 NEC LCD1770NX Power Input Replacement: step 6, image 2 of 2

    • Lift the the stand straight up to remove it.

    Edit

  7. NEC LCD1770NX Power Input Replacement, Monitor Enclosure: step 7, image 1 of 3 NEC LCD1770NX Power Input Replacement, Monitor Enclosure: step 7, image 2 of 3 NEC LCD1770NX Power Input Replacement, Monitor Enclosure: step 7, image 3 of 3

    • Place the monitor screen face up.

    • Pull the frame off by placing your fingers on the inside of the frame and pulling out and up, the frame should snap off.

    • Continue your way around the screen.

    Edit

  9. NEC LCD1770NX Power Input Replacement: step 8, image 1 of 3 NEC LCD1770NX Power Input Replacement: step 8, image 2 of 3 NEC LCD1770NX Power Input Replacement: step 8, image 3 of 3

    • Unscrew the two 7mm screws from the bottom of the button assembly.

    • Do not pull the button assembly out too quickly or with too much force! Damage to the wires can occur.

    • Pull the button assembly out a few inches and unplug the colored cables.

    Edit

  10. NEC LCD1770NX Power Input Replacement: step 9, image 1 of 2 NEC LCD1770NX Power Input Replacement: step 9, image 2 of 2

    • Unscrew the gold colored 7mm Phillips PH000 screw holding the button assembly to the monitor.

    • Remove the button assembly from the monitor.

    Edit

  11. NEC LCD1770NX Power Input Replacement: step 10, image 1 of 1

    • With the monitor face-down, unscrew the 5 7mm Phillips PH2 screws around the outside of the enclosure.

    Edit

  12. NEC LCD1770NX Power Input Replacement: step 11, image 1 of 3 NEC LCD1770NX Power Input Replacement: step 11, image 2 of 3 NEC LCD1770NX Power Input Replacement: step 11, image 3 of 3

    • Unscrew the 2 14.5mm Phillips PH2 screws located on the raised center of the enclosure.

    • Carefully pull the enclosure off the monitor.

    Edit

  13. NEC LCD1770NX Power Input Replacement: step 12, image 1 of 2 NEC LCD1770NX Power Input Replacement: step 12, image 2 of 2

    • Unscrew the 10 5mm Philips PH2 screws holding the metal casing to the monitor.

    Edit

  14. NEC LCD1770NX Power Input Replacement: step 13, image 1 of 2 NEC LCD1770NX Power Input Replacement: step 13, image 2 of 2

    • Pull the the metal casing off of the monitor to reveal the motherboards.

    Edit

  15. NEC LCD1770NX Power Input Replacement, Power Circuit Board: step 14, image 1 of 3 NEC LCD1770NX Power Input Replacement, Power Circuit Board: step 14, image 2 of 3 NEC LCD1770NX Power Input Replacement, Power Circuit Board: step 14, image 3 of 3

    • Make a note or use a pen to mark which plugs correspond to which colors. (Pink or Blue)

    • Remove the four plugs on the brown circuit board by pulling up on the tabs and wiggling them out. You could also use a spudger to help you lift little clips holding them in.

    Edit

  16. NEC LCD1770NX Power Input Replacement: step 15, image 1 of 3 NEC LCD1770NX Power Input Replacement: step 15, image 2 of 3 NEC LCD1770NX Power Input Replacement: step 15, image 3 of 3
    Tool used on this step:
    Large Needle Nose Pliers
    $4.99
    Buy

    • Locate the several multi-wire connectors on the board.

    • These connect several parts of each board together and consist of several different colors of wires. There is also a zip-tie holding the two sets of wires together that you can cut if it is getting in your way.

    • Disconnect the three plastic connectors from the blue colored boards by pulling them up while wiggling them.

    • Some force is necessary, it may also help to use the Large Needle Nose Pliers.

    Edit

  17. NEC LCD1770NX Power Input Replacement: step 16, image 1 of 1
    Tool used on this step:
    Phillips #1 Screwdriver
    $5.49
    Buy

    • Locate the large black power plug.

    • Using a Phillips #1 Screwdriver, unscrew the two 8mm colts holding the black tabs to the metal frame.

    Edit

  18. NEC LCD1770NX Power Input Replacement: step 17, image 1 of 1

    • Locate and remove the gold colored 10mm Philips screw located near the black power plug. It holds in a wire that connects to the power plug.

    Edit

  19. NEC LCD1770NX Power Input Replacement: step 18, image 1 of 2 NEC LCD1770NX Power Input Replacement: step 18, image 2 of 2

    • Remove 5 8mm Phillip1 screws, with a Philips 1 screwdriver, located in various places on the board.

    Edit

  20. NEC LCD1770NX Power Input Replacement: step 19, image 1 of 2 NEC LCD1770NX Power Input Replacement: step 19, image 2 of 2

    • Lift the brown power supply board off of the frame and set it aside.

    Edit

  21. NEC LCD1770NX Power Input Replacement, Power Input: step 20, image 1 of 2 NEC LCD1770NX Power Input Replacement, Power Input: step 20, image 2 of 2

    • Remove the solder from the three joints attached to the power input.

    Edit

  22. NEC LCD1770NX Power Input Replacement: step 21, image 1 of 3 NEC LCD1770NX Power Input Replacement: step 21, image 2 of 3 NEC LCD1770NX Power Input Replacement: step 21, image 3 of 3

    • Grab hold of the power supply jack and remove it from the power supply board.

    • A little force and a wiggling action may be needed to remove the power supply jack from the glue.

    Edit
Conclusion

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

One other person completed this guide.

Author

with 4 other contributors

Charlie Mohr

Member since: 10/21/13

353 Reputation

3 Guides authored

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Team

Cal Poly, Team 11-36, Amido Fall 2013 Member of Cal Poly, Team 11-36, Amido Fall 2013

CPSU-AMIDO-F13S11G36

5 Members

7 Guides authored

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