Kidkaos
Champion
Hello, popped in my cps3 (looks new) but have this issue. Almost as If the colors are negative. No colors present on the color test screen, but red is very much there on other screens as well as green.
Weird.
Weird.
Cps3 color issue
- Thread starter Kidkaos
- Start date
hatmoose
Enlightened
How long have you had the board? Has it always been this way since you got it, or working fine up until now
Kidkaos
Champion
Have had it 2 years. Haven't really used it till now. It has always worked
hatmoose
Enlightened
looks like you have no green. The color bars are all messed up too which is a bit concerning.
Anyhoo, if I lose a color first thing i check is gear and connections. If you haven’t already it might be worth putting a known good board in your (awesome!) cab just to check there is no damage to the JAMMA harness, or the green transistor in the monitor hasn’t given up, or anything like that. Then I clean the JAMMA edge to make sure all the connections are making good contact.
As I said above, those color bars are very odd, but always best to start with the simple stuff
Anyhoo, if I lose a color first thing i check is gear and connections. If you haven’t already it might be worth putting a known good board in your (awesome!) cab just to check there is no damage to the JAMMA harness, or the green transistor in the monitor hasn’t given up, or anything like that. Then I clean the JAMMA edge to make sure all the connections are making good contact.
As I said above, those color bars are very odd, but always best to start with the simple stuff
tiff_lee
Grand Master
Yeah that is bizarre, I actually thought it was some kind of screen burn initially but those artefacts are only present on that screen
GoldenGlover
Grand Master
Have you tried running a memory test (option 8 in the test menu? Would be good to help rule out if a work, sprite or character ram issue might be behind what you’re seeing.
Kidkaos
Champion
ItsBobDudes
Grand Master
probably just need to swap out the
source: https://github.com/mamedev/mame/blo...5e4537514e774b/src/mame/drivers/cps3.cpp#L239
| KM681002 - Samsung Electronics KM681002 128k x8 SRAM (SOJ32). This is the 'Color RAM' in the test mode memory | |
source: https://github.com/mamedev/mame/blo...5e4537514e774b/src/mame/drivers/cps3.cpp#L239
hatmoose
Enlightened
Agree. It’s going to be one of these guys.
Or same thing off another board
Removing them without damage is a reasonably skilled job, but because they are SOP32 1mm pitch you could just clip the legs and clean up with braid
Replacing them should be possible without special tools, but you’ll want to know your way around a soldering iron pretty well.
Replacement parts can come from e-bay /etc for not much $$
Given that working CPS3 boards are selling for well over $US1000 now this is worth fixing, even if you have to send it away.
Kidkaos
Champion
Thanks for the suggestion guys, it's much appreciated. I'm just glad this thing isn't 100% dead.
I'm not that versed with a soldering gun so not to risk further damage or a shitty job, any idea who I may be able to send it off to??
I'm not that versed with a soldering gun so not to risk further damage or a shitty job, any idea who I may be able to send it off to??
cruzlink2
Grand Master
did you ever replace the color ram?