Amiga.org

Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: 16vMonkey on July 17, 2023, 03:04:58 PM

Title: A1200 Brown Screen tint issue again, but...
Post by: 16vMonkey on July 17, 2023, 03:04:58 PM

So yes I've got the dreaded brown tint issue, and reading online there are a number of articles and videos about using ProTracker to highlight what colour channels are missing or low, by changing the colour bars. 

For example: https://www.youtube.com/watch?v=D8LGfxu2zpI

But when I drag the sliders I appear to get full range of RGB, but anything grey has a brown tint, including the Kickstart boot screen, its not purple, its brown.

Any clues as to what to check?!

Title: Re: A1200 Brown Screen tint issue again, but...
Post by: scuzzb494 on July 19, 2023, 03:02:08 AM

Check this video
https://www.youtube.com/watch?v=8xlG9Ln5o30&t=1083s

It will be the VideoDAC. You probably have a non-responsive section on the slider. Just do it very slowly using Pro-Tracker and see if at any point it moves but the colour doesn't change.

You can change your Workbench colour palette to compensate for the lost colour, which interestingly will also show what colour is causing the problem. Just have a play.

I have three machines now with the dreaded tint issue. I just don't let it bother me as its the grey that is mostly affected. Like I say just compensate with the WB palette or choose another colour scheme. This is one of my A600s with it.

https://www.scuzzscink.com/amiga/scuzzblog_september21_1/car_sbd_090921_10.jpg

Worth also checking over and maybe changing your monitor cables.