1200XL with Bad Color

[hueyjones70]

I just installed a UAV in a 1200XL and the color is really bad.  There is way too much black.  After installation I inserted a Pole Position to check our the color.  The grass was almost black, all of the darker spots in the clouds were black.  All of the other colors except for the blue sky were way too dark.  I tried another UAV and got the same results.  I tried to adjust the color with the monitor controls and that didn't help much.  I am using a Dell monitor that has s-video and composite inputs.  When I boot without a cart, the Atari Logo screen has all of the colors but they are darker than usual.  I tried two different carts so I know it isn't the cart nor the UAV.  Has anyone experienced a similar problem.

[BillC]

Did you adjust the jumpers to the settings required for the 1200XL, I believe these can also vary between different revisions of the UAV.

[hueyjones70]

Yes, I adjusted the jumpers.

[hueyjones70]

Yes I adjusted the jumpers BACKWARDS, I was holding the UAV 180° out of position. Too late at night to do anything else so I will report on the oitcome tomorrow.

[hueyjones70]

OK, today I tried out the UAV with the jumpers positioned correctly. On my first test the colors were off when I booted pole position.  The sky was green, the road was light gray, and the grass was dark green. When I booted with BASIC the screen was light blue and the text was dark blue. I tried another UAV and everything worked exactly as it should. So now I know that I have a defective UAV.