Stun Runner Problem

flynn54321

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I am having steering issues with my stun runner game.
Everything works just fine except the steering - doesnt matter if you go right or left - the ship does not respond to the steering. I tried a different pot on the steering gear and there is no change. Does anyone know what chips on the board would control this and if those chips can be swapped out?
 
Probably a bad ADC0809 at location 45B on the multisync pcb. That's the chip that deals with the controller pots.

Brian
 
Probably a bad ADC0809 at location 45B on the multisync pcb. That's the chip that deals with the controller pots.

Brian

I did go ahead and replace that chip - no change. I can steer left or right but the ship does not respond either way.... however - in test mode - the indicator (a line that lengthens or shortens depending on left or right with the controller) responds to the steering pot... very weird.
Any other ideas of what I can check??
 
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