Projector Vivitek D855St Dmd Chip Board Replacement Repair Guide

Difficulty

Moderate

Steps

10

Time Required

                          25 minutes            

Sections

1

• Projector - Vivitek D855ST DMD Chip Board Replacement
• 10 steps

Flags

2

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Introduction

What you need

Step 1

              Projector - Vivitek D855ST DMD Chip Board Replacement               

• First grab a 00 Phillips screwdriver remove the lamp cover.
• Then loosen the 3 captive screws holding the lamp in the projector with a standard Phillips screwdriver.

First grab a 00 Phillips screwdriver remove the lamp cover.

Then loosen the 3 captive screws holding the lamp in the projector with a standard Phillips screwdriver.

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Step 2

              Remove the housing               

• Remove the following 8 screws securing the bottom housing.
• Remove 3 screws securing the top housing.

Remove the following 8 screws securing the bottom housing.

Remove 3 screws securing the top housing.

Step 3

              Remove the top housing               

• Use the flat end of a spudger to pry the top housing around the sides.
• Slightly lift from the front and push it toward the rear of projector to free the mounting tabs.

Use the flat end of a spudger to pry the top housing around the sides.

Slightly lift from the front and push it toward the rear of projector to free the mounting tabs.

Step 4

              Remove top shield               

• Remove the following 8 screws of various sizes on the top shield.
• Remove the screw in red very last. It’s tight and after removing the others, you can swivel the shield enough to loosen that screw without stripping it.

Remove the following 8 screws of various sizes on the top shield.

Remove the screw in red very last. It’s tight and after removing the others, you can swivel the shield enough to loosen that screw without stripping it.

Step 5

              Remove main board               

• Remove one screw and the carefully disconnect 2 ribbon cables and 8 cable connectors from the main board.
• Remove the 6 video cable standoffs from the rear of the projector. Needle-nose pliers will loosen them enough then a Torx-8 driver fits perfect to loosen them the rest of the way
• Carefully push the rear of the video ports inward to push the board enough forward and lift up.
• Lift up and disconnect the cable connector on the bottom of the board to the power supply.

Remove one screw and the carefully disconnect 2 ribbon cables and 8 cable connectors from the main board.

Remove the 6 video cable standoffs from the rear of the projector. Needle-nose pliers will loosen them enough then a Torx-8 driver fits perfect to loosen them the rest of the way

Carefully push the rear of the video ports inward to push the board enough forward and lift up.

Lift up and disconnect the cable connector on the bottom of the board to the power supply.

Step 6

              Remove power supply               

• Remove 2 screws on the right and left sides toward the bottom securing the power supply to the chassis.

Remove 2 screws on the right and left sides toward the bottom securing the power supply to the chassis.

Step 7

              Disconnect the power supply               

• Disconnect the cable connectors from the left and right sides under the power supply

Disconnect the cable connectors from the left and right sides under the power supply

Step 8

              Remove the lens unit               

• Remove the following 3 identical screws to remove the lens unit.

Remove the following 3 identical screws to remove the lens unit.

Step 9

              Remove the heatsink               

• Remove one screw and the tension bar holding the heatsink to the DMD Board
• Pull back the shielding tape from the heatsink to the lens unit.

Remove one screw and the tension bar holding the heatsink to the DMD Board

Pull back the shielding tape from the heatsink to the lens unit.

Step 10

              Access to DMD board               

• Remove 4 screws securing the DMD board to the lens unit
• Pull it gently apart. It is held by thermal paste.

Remove 4 screws securing the DMD board to the lens unit

Pull it gently apart. It is held by thermal paste.

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

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                    dustind                     

Member since: 04/26/2011

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