Bloodstorm PCB controls sticking

BLEAGH

New member
Joined
Feb 18, 2009
Messages
6
Reaction score
0
Location
Tennessee
I picked up a bloodstorm pcb and am having some issues with the controls.

On player 1, down, button 1, 2, and start are registering as held down.

On player 2, down is the only thing being held down.

It's running on my homemade supergun, but I get the same thing even with no controllers connected. My other pcbs work fine with no issues. I've looked over my wiring and the pcb to make sure that those inputs aren't bridged with ground anywhere and cleaned any dirt off.

I can't seem to figure it out. If i could just fix the player 2 down button it would be playable.

Any help would be appreciated. Thanks!
 

Attachments

  • buttons.jpg
    buttons.jpg
    80.3 KB · Views: 6
I picked up a bloodstorm pcb and am having some issues with the controls.

On player 1, down, button 1, 2, and start are registering as held down.

On player 2, down is the only thing being held down.

It's running on my homemade supergun, but I get the same thing even with no controllers connected. My other pcbs work fine with no issues. I've looked over my wiring and the pcb to make sure that those inputs aren't bridged with ground anywhere and cleaned any dirt off.

I can't seem to figure it out. If i could just fix the player 2 down button it would be playable.

Any help would be appreciated. Thanks!

I can't tell you what exactly, but something on the pcb that handles the control output is messed up. Dead or shorted switch or diode. Something.
 
The controls are described on page 22 of the manual. Check the input lines and the corresponding chips.
 
Back
Top Bottom