HP- LT3200_ HP-LT3700_HP-LT4200_HP-LT4700 _ DISASSEMBLE PROCEDURE _ 2 of 2

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                                       {2 of 2}
REMOVING THE BOARD COVER

• Remove the seven screws from the board cover and remove the board cover.

1. Note: When replacing the board cover, do NOT replace the screws above the s-video connectors and the red and white RCA jacks (audio output) as indicated by the arrows in the first of the two pictures above. You will replace these screws when you replace the back cover.
2. Note: When replacing the board cover, place the edge of the cover under the slots in the main bracket, as indicated by the blue circles in the second of the two pictures above.

REMOVING THE MAIN BOARD

• Removal procedures are similar for all models.
• It is not necessary to remove the power supply to remove the main board.
• Only the main board and cable are spared; therefore, after removing the assembly from the unit, you must remove the two brackets from the board, and replace them on the new board.
• Detach all the cables connected to the main board.
• You must remove one screw to remove the LVDS cable.

                                                                                       Power jumper above.

                                                                                     Speaker IR cable above.

                                                                       VDS cable requires screw removal [above]

• Remove the six screws from the I/O bracket.

• Remove the five screws securing the main board to the main bracket.

• Remove the main board together with the I/O bracket.

• To remove the brackets from the main board:

1. Remove the collar nut from the antenna/cable in connector.
2. On the black-faced bracket that has the row of TV connectors, remove the three black machine screws located over the HDMI ports.
3. Remove the five remaining black, self-tapping screws, and then remove the bracket from the main board.
4. On the bracket with the VGA and RS-232 ports, remove the one black, self-tapping screw next to the RCA jack and four hex screws (two for each connector), and then remove the bracket from the main board.

• When attaching the new main board to the brackets:

1. Place the brackets and board on a flat surface.
2. First install the bracket with the VGA and RS-232 ports. This bracket fits on the inside of the black connector bracket.
3. When replacing the main board/bracket assembly, install the system board bracket below the rails in the TV.

REMOVING POWER SUPPLY

• LT3200 and LT3700 models use the same power supply. LT4200 and LT4700 models use the same power supply, but differ from the LT3x00 models.
• Do not have to remove the main board to remove the power supply.
• Detach all the cables connected to the power supply.

                                                                                   Inverter cables above.

                                                                                   Inverter cables [above]

• The Master inverter cable connector is closer to the outside of the board

• Remove the four screws securing the power supply to the main bracket.

• Remove the power supply.