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NEC LCD1770NX Power Circuit Board Replacement

Use this guide to remove the circuit board for soldering.

  • Autor: Charlie Mohr
  • Geschätzte Zeit: 40 Minuten
  • Schwierigkeitsgrad: Moderat

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.

Abschnitte

Schritt 1 Power Circuit Board  ¶ 

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. 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.

Schritt 1 Power Circuit Board  ¶ 

  • 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.

Schritt 2  ¶ 

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.

Schritt 2  ¶ 

  • 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.

Schritt 3  ¶ 

Locate the large black power plug.

Schritt 3  ¶ 

  • Locate the large black power plug.

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

Schritt 4  ¶ 

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.

Schritt 4  ¶ 

  • 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.

Schritt 5  ¶ 

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

Schritt 5  ¶ 

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

Schritt 6  ¶ 

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

Schritt 6  ¶ 

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