NEC LCD1770NX Power Circuit Board Replacement

Introduzione

The power circuit board controls the flow of power to the monitor to prevent overload. If there is a problem with the power supply, the entire circuit board must be removed before any soldering may occur.

Cosa ti serve

Passo 1 Stand

NEC LCD1770NX Power Circuit Board Replacement, Stand: passo 1, immagine 1 di 2

NEC LCD1770NX Power Circuit Board Replacement, Stand: passo 1, immagine 2 di 2

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

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Passo 2

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

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Passo 3

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

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Passo 4

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

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Passo 5

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

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Passo 6

Lift the the stand straight up to remove it.

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Passo 7 Monitor Enclosure

NEC LCD1770NX Power Circuit Board Replacement, Monitor Enclosure: passo 7, immagine 1 di 3

NEC LCD1770NX Power Circuit Board Replacement, Monitor Enclosure: passo 7, immagine 2 di 3

NEC LCD1770NX Power Circuit Board Replacement, Monitor Enclosure: passo 7, immagine 3 di 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.

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Passo 8

NEC LCD1770NX Power Circuit Board Replacement: passo 8, immagine 3 di 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.

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Passo 9

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

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Passo 10

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

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Passo 11

NEC LCD1770NX Power Circuit Board Replacement: passo 11, immagine 3 di 3

Unscrew the 2 14.5mm Phillips PH2 screws located on the raised center of the enclosure.
Carefully pull the enclosure off the monitor.

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Passo 12

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

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Passo 13

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

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Passo 14 Power Circuit Board

NEC LCD1770NX Power Circuit Board Replacement, Power Circuit Board: passo 14, immagine 1 di 3

NEC LCD1770NX Power Circuit Board Replacement, Power Circuit Board: passo 14, immagine 2 di 3

NEC LCD1770NX Power Circuit Board Replacement, Power Circuit Board: passo 14, immagine 3 di 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.

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Passo 15

NEC LCD1770NX Power Circuit Board Replacement: passo 15, immagine 3 di 3

Attrezzo utilizzato in questo passaggio:

Large Needle Nose Pliers

$4.99

Compra

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.