Procedure

1. Check for bent pins on the CRT neck (see Figure 1). Remove the video board and observe the pins on the CRT neck. Make sure all of them are straight. If the pins are not straight, carefully attempt to straighten them with a flatblade jeweler's screwdriver or needlenose pliers and test the board again.

Figure 1 CRT Neck Pins

073-0593 Rev. A

2. Make sure the video board is properly seated on the CRT neck (see Figure 2). The top picture shows the video board improperly seated; the bottom picture shows it properly seated. When the video board is properly seated, the plastic socket of the video board slides up to the retaining ring on the CRT neck, just before the CRT neck rings. It is critical that the video board be fully seated in order for the power/analog/video board to function properly.

Figure 2 Video Board Improperly and Properly Seated

3. Check the connection of the RGB cable to the logic board. (see Figure 3).

Figure 3 RGB Cable Connection

4. Remove the RGB cable and inspect the pins on the logic board connector (see Figure 4). If the pins are bent, carefully attempt to straighten them with a flatblade jeweler's screwdriver or needlenose pliers and test the board again. Note: The pins on this connector are very fragile. If they become damaged, you will need to replace the logic board.

Figure 4 Main Logic Board Connector Pins

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