TMNT
Reporting faulty ram chips at G8 and G28. Taking a look under the board these have already been replaced, so I ruled them out for now.
Had a poke around after disabling the watchdog (Jumper maked JP)and couldn't see any obvious faults, don't really like working on these konami boards, the tracks and vias are so small.
Spotted a very small amount of damage on the underside of the board right on a via, scrapped it back and a tiny trace was damaged. These link what I guess are custom chips @ J12 & L12.
I beeped out where it was supposed to go, luckily it was the same pin on each custom(pin 21), so I just ran a jumper wire to each one.
It fired right up with no errors. Cowabunga !
Reporting faulty ram chips at G8 and G28. Taking a look under the board these have already been replaced, so I ruled them out for now.
Had a poke around after disabling the watchdog (Jumper maked JP)and couldn't see any obvious faults, don't really like working on these konami boards, the tracks and vias are so small.
Spotted a very small amount of damage on the underside of the board right on a via, scrapped it back and a tiny trace was damaged. These link what I guess are custom chips @ J12 & L12.
I beeped out where it was supposed to go, luckily it was the same pin on each custom(pin 21), so I just ran a jumper wire to each one.
It fired right up with no errors. Cowabunga !
