Button stuck

[Casaborg]

Hi friends, I need help solving this. I converted a Hat Trick Hero 93 board to Gekirindan. Everything went fine up to that point... But during gameplay, I can only shoot; I can't launch bombs. In the test menu, it shows as stuck 'ON'. According to the AI, the IC that controls the inputs is the TC0640FIO. I did a reflow, but nothing changed. Could it be defective? Could a physical bypass be done to activate that problematic button? I should mention that both players appear as 'ON' in the test menu. I cant fire a bomb right now

Thank you very much

 

[ShootTheCore]

Button 2 is Pin 23 on the JAMMA harness. Player 1 is Pin 23 on the top side and Player 2 is Pin 23 on the bottom side.

Use a multimeter and check for continuity between Pin 23 and a Ground pin. If the meter does show continuity then that explains why it always shows as "ON" in the test menu. Trace the connection from those JAMMA pins and see what they connect to - chances are that they are connected to something before the TC0640FIO that needs replacing.

Does Button 2 function correctly with the Gekirindan ROMs?