MonsterBash
Well-known member
So I move my Defender a couple times in the last month..when I finally got it home I got the infamous rug test over and over. It was working fine for 6 months before the move.
I reflowed the pins on the Main PCB, ROM and Interface board and got the game back. Now the thrust is 'stuck' on.
I removed the wires to the thrust button and no change.
I removed the ribbon cable from the interface board to the PCB while the game was running and the thrust still stayed on.
I did double check the interface board and it looks fine after reflowing the pins. mesure the resistors and all were fine
I don't have any extra boards for defender. I could try the interface board from my Robotron but I'm pretty sure they are different
Any ideas on this one?
Edit to add: All other controls including the coin door switches work fine
I reflowed the pins on the Main PCB, ROM and Interface board and got the game back. Now the thrust is 'stuck' on.
I removed the wires to the thrust button and no change.
I removed the ribbon cable from the interface board to the PCB while the game was running and the thrust still stayed on.
I did double check the interface board and it looks fine after reflowing the pins. mesure the resistors and all were fine
I don't have any extra boards for defender. I could try the interface board from my Robotron but I'm pretty sure they are different
Any ideas on this one?
Edit to add: All other controls including the coin door switches work fine

