Trying to get a point blank 2 working. Currently iv got a black screen and not booting. I tested the top gp-13 board on a tekken and it seemed to work on that board. I also tried the gp-11 from the tekken and it still did not fix the point blank. Only thing I can find that looks odd is a chip has a small bulge, located at the 5m spot. Could this be my problem? Any other tests I could do?
System 11 point blank 2 no boot
- Thread starter santeegmc
- Start date
that chips is 100% toast
that's a PAL too so you'll need to see if it's been dumped or reversed. If not the board is likely un-repairable. If it is dumped then you'll want to remove that IC and solder in a socket then program a new PAL to replace it.
another question is what CAUSED that chip to overhead and melt itself. I've only ever seen that happen if a chip gets plugged in backwards or there's a serious short on the board somewhere. Given it's not socketed that rules out it being installed backwards. but you'll want to check the near by circuit for something that could have caused a serious short.
that's a PAL too so you'll need to see if it's been dumped or reversed. If not the board is likely un-repairable. If it is dumped then you'll want to remove that IC and solder in a socket then program a new PAL to replace it.
another question is what CAUSED that chip to overhead and melt itself. I've only ever seen that happen if a chip gets plugged in backwards or there's a serious short on the board somewhere. Given it's not socketed that rules out it being installed backwards. but you'll want to check the near by circuit for something that could have caused a serious short.
from the PLD Archive it looks like "S11MOT5B" is NOT dumped,
however, there is a similar chip in the same spot "S11MOT2A": https://wiki.pldarchive.co.uk/index.php?title=Gun_Barl
this is listed as "Unlocked" which is good as it means you could find someone else with a Point Blank 2 board willing to dump their PLD
you might also try just running the 2A version and see if it works
weirdly I see in the MAME driver that "S11MOT#A" are listed as "standard PLDs" for System 11... and I'm not seeing any references to "S11MOT5B"
however, there is a similar chip in the same spot "S11MOT2A": https://wiki.pldarchive.co.uk/index.php?title=Gun_Barl
this is listed as "Unlocked" which is good as it means you could find someone else with a Point Blank 2 board willing to dump their PLD
you might also try just running the 2A version and see if it works
weirdly I see in the MAME driver that "S11MOT#A" are listed as "standard PLDs" for System 11... and I'm not seeing any references to "S11MOT5B"
So I've managed to remove the bad chip and install a socket. I Found some new matching PAL chips but there seems to be little info on making copies or programing these types of chips.
I tried using a t48 programmer and Xgpro software with no luck. The software list a handful of GAL chips but no PALs. Do you know off hand if these chips are programable?
Hammy
Enlightened
I'll check my scraps for S11MOT5B PAL, probably have one. Best not to mix with the wrong type wait for the correct dump or transfer the flash , soundrom, keycus and romboard over to a known good mainboard with compatible flash pinout.
EDIT - ALSO DUMP THE FLASH AND COMPARE BEFORE RE-SOLDERING if you do method 2
EDIT - ALSO DUMP THE FLASH AND COMPARE BEFORE RE-SOLDERING if you do method 2
As far as I can tell it was only point blank 2 and a quiz my angel game that used that chip. All ther other games appear to use the s11mot2a. The file dump available looks like the same for every game? Ideally it would be nice to have the original though.
Big_P Big_p
Professional
Did you find what caused the chip to do that? I would be more worried about that and would definitely look into it before I ran it with a new PAL.
Hammy
Enlightened
I have quiz angel, but that means nothing... the pal # goes with the motherboard rev..
Any title could be run on the old or new motherboards, it's the COH number on the TOP board that must be paired with certain games (GPU model number changes)
Yeah, i think moving the software over to a known good board is the best option, then you can try and get the other game working on this pcb.
Bad program could in theory cook the PSX hardware - i think the "ZN lockout" i have been encountering (on the other playstation hardware) is one of the chips cooking / overloading, and the 10-15 min wait is actually the chip cooling down or something re-setting when the power has been down long enough.
Any title could be run on the old or new motherboards, it's the COH number on the TOP board that must be paired with certain games (GPU model number changes)
Yeah, i think moving the software over to a known good board is the best option, then you can try and get the other game working on this pcb.
Bad program could in theory cook the PSX hardware - i think the "ZN lockout" i have been encountering (on the other playstation hardware) is one of the chips cooking / overloading, and the 10-15 min wait is actually the chip cooling down or something re-setting when the power has been down long enough.
Although the smart option, I am not skilled or comfortable enough in trying a swap at this point.
My Board is a Version B, it only has 2 flash chips and has a slightly different layout compared to the other S11 boards I have.
I ended up trying a 2A chip from another board and the Game BOOTED, But then had some issues.
With no input from me, the test screen appeared and the coin counter began to add coins. Hitting start, test, coin did nothing. I'm guessing the 2A chip has different programming?
Id really like to try a good 5B chip to see if that fixes it and would happily buy one if you happen to find one.
As far as programing goes, is it possible to make copies or burn new ones? Can I use a GAL instead?
Hammy
Enlightened
now check the LS 253 if you are getting control issues.
if you used a PLD dump from another version , it may not have the correct setup so check the 253's enables, they may trace to the PLD..
Sounds like it was plugged in backwards, and cooked the 253 and PLD (it's probably connected),
If the enables are stuck , real PLD dump from this version will sort it..
Real dump will take some time unless someone else has one on hand... ( will take me some months, i need to dig one out and send it to get done - hopeufully one from each version)
if you used a PLD dump from another version , it may not have the correct setup so check the 253's enables, they may trace to the PLD..
Sounds like it was plugged in backwards, and cooked the 253 and PLD (it's probably connected),
If the enables are stuck , real PLD dump from this version will sort it..
Real dump will take some time unless someone else has one on hand... ( will take me some months, i need to dig one out and send it to get done - hopeufully one from each version)
The 253 chips visually look good. Any easy way of testing for bad ones or stuck ones?
I attempted to program a GAL with the S11MOT2A dump available but I couldn't get that to work, no boot. This is my first try at programing anthing, kinda just winging it.
I found some matching PAL chips but turns out my cheap programer wouldn't work on those.
I attempted to program a GAL with the S11MOT2A dump available but I couldn't get that to work, no boot. This is my first try at programing anthing, kinda just winging it.
I found some matching PAL chips but turns out my cheap programer wouldn't work on those.