Troubleshoot Connecting MacBook Pro to Mitsubishi XD80U Projector

I am having trouble with the signal from a new MacBook Pro 15" to a Mitsubishi XD80U Projector using the DVI to VGA adapter. The signal projected is distorted, grainy, and jumpy. The left side of the projected picture has white lines appearing as if the picture is moving fast to the side. The projector menu,however, is clear and has no distortion. Display settings are at the Mitsubishi optimum, 1024 X 768 with 60 Hz refresh rate.
This same projector works fine with a Mac laptop on 10.4.8 (S video cable) and a PowerBook G4 10.3.9 (VGA adapter). Apple thought it was the DVI to VGA adapter, but a replacement did not fix.
This same MacBook Pro connects to a 23" Apple Display throug the DVI port with no problem.
Any suggestions???
MacBook Pro 15"   Mac OS X (10.4.8)  

Hello Dave Lorelie,
It sounds like you were able to use your TV as an external display but now its not working for some reason. I would use the troubleshooting in the following article about troubleshooting issues like this:
Apple computers: Troubleshooting issues with video on internal or external displays
Thank you for using Apple Support Communities.
Cheers,
Sterling

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