5200 Color Shift

[atariksi]

Ah, forgot about that POT. Yeah, got it pretty good now. The picture itself, color wise, is still a lot darker than on an emulator. Any way to adjust that, or was that just the system?

 

It looks like POT was on edge between different colors and warming up the machine caused change in the colors whereas if POT was centered on the actual colors (tuned), the warming up of the machine would cause less visual change in the colors. I once replaced a GTIA chip from A800 and put it into A5200 and the colors were all messed up and had to adjust the POT.

[atariksi]

Ah, forgot about that POT. Yeah, got it pretty good now. The picture itself, color wise, is still a lot darker than on an emulator. Any way to adjust that, or was that just the system?

 

It looks like POT was on edge between different colors and warming up the machine caused change in the colors whereas if POT was centered on the actual colors (tuned), the warming up of the machine would cause less visual change in the colors. I once replaced a GTIA chip from A800 and put it into A5200 and the colors were all messed up and had to adjust the POT.

 

I forgot to mention that brightness problems may be caused by your connections from A5200 to TV. Are you using those coaxial RF adapters or switch box?

[Greg2600]

I use the RF straight through coax thing, that AtariAge sells. I haven't seen a 5200 live in action, besides mine, in years, to have a good frame of reference. I've always felt RF really just means more fuzziness.

Edited February 23, 2010 by Greg2600