Press “Re-Sync” on the Remote Control or Control Panel
For Windows 95, 98, 2K, XP: 1. From the “My Computer” icon, open the “Control Panel” folder, and double click the “Display” icon. 2. Select the “Settings” tab 3. Click on the “Advanced Properties” button. If the projector is still not displaying the entire image, you may need to change the monitor display that you are using. Refer to the following steps.
4. Verify the resolution setting is less than or equal to 1024 x 768 resolution. 5. Select the “Change” button under the “Monitor” tab . 6. Click on “Show all devices.” Next, select “Standard monitor types” under the SP box; choose the resolution mode you need under the “Models” box. 7. Verify that the resolution setting of the monitor display is less than or equal to 1280 x 1024. 4 If you are using a Notebook PC: 1. First, follow the steps above to adjust resolution of the computer. 2. Switch the Notebook PC display to the “external display only” or “CRT only” mode. 4 If you experience difficulty changing resolutions or your monitor freezes, restart all equipments including the projector.
Also, if Problem: Image has vertical flickering bar 4 Use “Frequency” to make an adjustment. See page 22 for more information. 4 Check and reconfigure the display mode of your graphics card to ensure compatibility.
Regards

Hello:
You have a faulty main board and or Digital main board assembly, Replacing this board will solve the Vertical lines in the unit. I suggest you have the Main digital board assembly replaced, this board might house the main ctrl also, depending on the model.