Heya ll,
First post. Just joined hoping to find some help.
Picked up a 4 slot cab not working. Machine booted to crosshatch of death. Removed the battery (on advice from here) cleaned the alkali up with vinegar and repaired a couple traces.
Powered game up and it booted but there was no sound and every game locked up in every slot after random amounts of time. No sound in tests, from speakers or headphones.
Wired board into a test bench / supergun and 12v shut down forcing the power supply into protection mode. Removed the ha13001 and system no longer shut down. Replaced ha13001 with new one and system boots with sound! Getting somewhere.
All games freeze after a minute or so after starting and exhibit small black dots on screen. Increase voltage to 5.5v and games stops freezing as often.
Games mostly run but with a lot of black dots on screen, like mosquitos flying about and also concerned about increased 5v levels because 12v climbs even more, to like 14.5 volts. I buzzed out all the connectors between upper and lower boards and everything is sane.
Unsure what I should chase. Thanks for any suggestions.
First post. Just joined hoping to find some help.
Picked up a 4 slot cab not working. Machine booted to crosshatch of death. Removed the battery (on advice from here) cleaned the alkali up with vinegar and repaired a couple traces.
Powered game up and it booted but there was no sound and every game locked up in every slot after random amounts of time. No sound in tests, from speakers or headphones.
Wired board into a test bench / supergun and 12v shut down forcing the power supply into protection mode. Removed the ha13001 and system no longer shut down. Replaced ha13001 with new one and system boots with sound! Getting somewhere.
All games freeze after a minute or so after starting and exhibit small black dots on screen. Increase voltage to 5.5v and games stops freezing as often.
Games mostly run but with a lot of black dots on screen, like mosquitos flying about and also concerned about increased 5v levels because 12v climbs even more, to like 14.5 volts. I buzzed out all the connectors between upper and lower boards and everything is sane.
Unsure what I should chase. Thanks for any suggestions.