Street Fighter 2 Hyper Fighting - Graphical Glitches Isolated to C Board

NoAffinity

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Street Fighter 2 Hyper Fighting - Graphical Glitches Isolated to C Board

I'm getting some graphical glitches on this SF2HF board. I swapped the C board from a working SF2HF, and the problems go away and the board plays great. I tried swapping the PAL chips from known good C board to questionable C board. No improvement. What's next? Is the CPS-B-21 shot?



 
Yeah, did that. Nothing standing out under the magnifiers. Might reflow it if there's no other potential fixes to try first.
 
Having never own a cps1 setup. Those 2 ic in the socket are seated properly?

Yes. I swapped them from the good board, made sure they were fully seated before and after, and confirmed the orientation against the good board.
 
If you have replaced both PAL chips with known good ones and the faults still there, checked for lifted pins or even bad traces then i would say that customs lost connection inside sadly :( another one bites the dust as i say this is one of the reasons i stopped fixing these PCBs as 8 out of 10 i repaired were custom related problems
 
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Yeah, seems like maybe it's an inevitability at this point. Of course, I do have a CPS2 A board that I've never gotten around to repairing, but of course, it has similar graphical issues. Do the CPS-B-21's serve the same purpose on CPS1 and CPS2?
 
You can use the CPS 21 chip from a CPS2 A board but only IF the A board you have is really badly damaged or wrecked i wouldnt recommend changing it over if the A board you have still works fine
 
The a board has graphical glitches. I also started thinking about at least one other part I could harvest from that one - a sound amp to try to fix another a board that has muffled audio on one channel when in stereo mode, but is otherwise golden.
 
I have a SF2HF C board that also bit the dust. Mine has larger black bars spaced vertically every couple inches across the screen. Other than that the colors where fine in between and played fine. I tried re-flowing everything and swapping what I could also nothing worked, had to find another board. Picked up another CE edition and took the C board from that for the HF
I hope these C boards don't all start to die as I Love my SF2HF it's on of my favorite.
 
Yeah, I had that thought too - is this the leading edge of what will eventually be a much bigger problem. It seems more common on cps1 boards, but granted, they are older. Wondering if maybe capcom made some design revisions for the cps2 batch or again if this is just the beginning and as they continue to age, it will be an ongoing problem.
 
From all the recent talk of dodgy CPS-B chips, I wonder if I should look into making a universal replacement C-board (assuming nobody else is working on one).

Pity the CPS-A chip is also a bit flakey. That wouldn't be a drop-in replacement.
 
That...would....be....AWESOME! I haven't seen any mention of anybody else working on one, in other posts I've been digging through across the webs, including a parallel thread I started on arcade otaku forums. This is in fact the only mention of such an idea that I've seen...and it's a great idea. I would be in for at least 2 immediately, probably more if I dug through my pile of partially working cps1 board sets. I think you would have significant interest in a cps-a-01 replacement as well, even though it does require more advanced smd rework.
 
From all the recent talk of dodgy CPS-B chips, I wonder if I should look into making a universal replacement C-board (assuming nobody else is working on one).

Pity the CPS-A chip is also a bit flakey. That wouldn't be a drop-in replacement.

that would be great i would buy them for sure if only the asic could be remade
 
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