Hey guys,
I need some tips for this Legionnaire PCB, i don't know much about this hardware and i cannot understand why is not posting.
What i've done so far is:
Programming new 20c010 for the program (didn't check the old ones but they were changed already)
Check 4x 62256rams and changed one with bad bus.
Check 3x 6116 rams
Check CPU halt/reset (both got transition from Low to Hi, there's activity on adresses and data)
Reflowed mostly customs and pulled out the big one in the centre to check underneath (there were some lifting pins on the corners but i've found out the pads on them dont go anywhere, no traces or vias and no ground connection too)
Changed HB-02 custom (i think it's for coin counter but i decided to change it anyway)
Reflowed the other HB
Check all 3 oscillators
Changed a broken resistor array (472g) near the 68k and a 22k resistor (all rusted) near the SEI0100BU YM39.
Pcb boots up with a strange "sync" kind of error and then a straight line in the middle of the screen.
I'm able to coin the game and hear the coin in, but i've been told that this is drove somehow by the Z80 so it mostly works separate from the rest.
Even by being able to do so, the game did not proceed further, pressing start or A does nothing and the game is just mute.
Is this a known behaviour to start understand what it could be?
Hardware is identical to heatred barrel and similar to other seibu games, but i wasn't able to find anyone with this kind of issue to start understanding what it could be.
Thanks fro your help
I need some tips for this Legionnaire PCB, i don't know much about this hardware and i cannot understand why is not posting.
What i've done so far is:
Programming new 20c010 for the program (didn't check the old ones but they were changed already)
Check 4x 62256rams and changed one with bad bus.
Check 3x 6116 rams
Check CPU halt/reset (both got transition from Low to Hi, there's activity on adresses and data)
Reflowed mostly customs and pulled out the big one in the centre to check underneath (there were some lifting pins on the corners but i've found out the pads on them dont go anywhere, no traces or vias and no ground connection too)
Changed HB-02 custom (i think it's for coin counter but i decided to change it anyway)
Reflowed the other HB
Check all 3 oscillators
Changed a broken resistor array (472g) near the 68k and a 22k resistor (all rusted) near the SEI0100BU YM39.
Pcb boots up with a strange "sync" kind of error and then a straight line in the middle of the screen.
I'm able to coin the game and hear the coin in, but i've been told that this is drove somehow by the Z80 so it mostly works separate from the rest.
Even by being able to do so, the game did not proceed further, pressing start or A does nothing and the game is just mute.
Is this a known behaviour to start understand what it could be?
Hardware is identical to heatred barrel and similar to other seibu games, but i wasn't able to find anyone with this kind of issue to start understanding what it could be.
Thanks fro your help
