Solved Hyper Sports wrong tiles colors.

[Georgian2]

Hello,

here I have another tough one. 8 ICs were already broken and swaped and I finnaly brought this game to life and everything is stable.
The colors are still way wrong. It seems like there is no blue and green. Blue and green are indeed working since the text is white. Color PROM has been checked and is ok. Konamni custom IC at A10 has bee swapped for the one at J13 and no difference at all.
As you can see in the attached video, if I remove the PROM at A9 I get an sort of orange solid color. Pulling the data pins low dose change the color but pulling the D2, PIN 10 LOW dosen't make any difference at all. Something must be wrong here but I can't seem to find anything wrong. A5, A7, A8 are swapped for new ones. C7 too, still SF1 and SF0 inputs are always low. There is activity on them but only during boot. I have no idee what could be at fault here.

Anyboy has fixed this kind of issue before?

Thanks.

Hyper Sports wrong colors:

Hyper Sports with PROM at A9 out:

Schematics: https://arcarc.xmission.com/PDF_Arcade_Manuals_and_Schematics/Hyper_Sports_Schematics.pdf

 

[Shinydaz]

Colour ram maybe, or ics near it? You tried the test rom

 

[Georgian2]

Colour ram maybe? You tried the test rom

Which one is it? Yes, the test rom shows everything OK but the OK text is grey were it should be green I think.

 

[Georgian2]

I finaly got it. LS157@A4 has a bad output. Nothing suspicious on the logic probe. Replaced it and everythig looks great now, finaly....

 

[TheDaddy]

Only just spotted this thread , Nice fix mate. I have a shed load of these to tackle one day !

Dave.

 

[Georgian2]

Next one on the line is one road fighter bootleg. Same board like hyper sports but uses 2x 50 pin flat cable between PCBs and the customs are replaced with small doghter boards. This one show all OK with the diagnostics rom but has only few stable sprites on screen. game play might work but the aplifier is snaped off... will take a while to get it working.