XeD
Grand Master
I have a cps3 motherboard that for the most part work. The problem I have is there are wired green line on the screen. Any idea where I should start looking?
Another CPS3 troubleshooting
- Thread starter XeD
- Start date
l_oliveira
Grand Master
One of the big chips (likely the PPU one) has loose pins. That error on the screen is caused by disconnection on at least one of the pins.
That happens due to heat over years and years of operation or by flexing the board while it's not mounted on the cab.
You need to take the board to someone who can properly re-heat and reflow the solders making the pins connect again.
That happens due to heat over years and years of operation or by flexing the board while it's not mounted on the cab.
You need to take the board to someone who can properly re-heat and reflow the solders making the pins connect again.
XeD
Grand Master
I have reflow all the custom ic using the drag meathod. No change. I'm to cheap to send it out for repair and like to do things hand on. If I don't fix this myself it will become my battery changing rig.
l_oliveira
Grand Master
It can also be a "minor" video ram problem, because CPS3 seem to use a frame buffer approach on it's video generation circuit...
XeD
Grand Master
I'll look into that. Do you know which one is the video ram?
Last edited:
l_oliveira
Grand Master
Chips 1D to 5D are video RAM. 8E and 9E are palette RAM. 9F is a RAM too.
XeD
Grand Master
Thank you. I'll start with the video ram 1st then move to the palette. I take it the last one is work ram?
l_oliveira
Grand Master
no Work RAM is 15J
XeD
Grand Master
This system is a lot more complex then the Neo Geo I'm use to. Good experience non the less
XeD
Grand Master
Small update. Changed out the sprite, work and character did not fix the problem.
l_oliveira
Grand Master
Have you tested the memory on the game service menu? does the simm sticks pass test?
XeD
Grand Master
I have done that. Memory check show simm 1 and 2 as ng. Simm check show simm 1 ng only. I get the same resault on my good setup and even if I swap the Simms. I might just have to put it on hold as use it as my battery replacement rig only.