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NFG Forums => Arcade Discussion => Topic started by: carlosemandrade on May 07, 2010, 01:23:08 PM

Title: Taito F3 jamma board (Grid Seeker) stuck trigger
Post by: carlosemandrade on May 07, 2010, 01:23:08 PM
hello all

bought this great game, video and audio works very well but trigger B (bomb) for both players don't work. in test mode, both indicates "ON" state even without any controller

could be a board problem ?  :(
Title: Re: Taito F3 jamma board (Grid Seeker) stuck trigger
Post by: undamned on May 08, 2010, 10:05:21 AM
I'm assuming you've tried other JAMMA boards on your setup and they work fine?
-ud
Title: Re: Taito F3 jamma board (Grid Seeker) stuck trigger
Post by: carlosemandrade on May 09, 2010, 05:24:24 AM
Yes, other jammas works fine.   Used a multimeter to check input and traces/bad solders on the F3 board. P1 and P2 "B" (bomb) triggers goes with the rest of controller commands to a proprietary Taito SMD ic. The pin of "B" trigger on smd ic behaves correctly  ( testing this specific pin, vcc with trigger open and 0v with trigger pressed BUT in game the trigger continues stuck  :P )

I'll return this board and catch another (probably Final Star Force).