The B button on my SNES only works if the X button is also depressed. The problem only occurs when the controller is plugged into the #1 position, both my controllers work fine plugged into #2. (I disassembled the controllers and cleaned the contacts already) The problem seems to lie in the SNES console, I took it apart looking for broken solder joints or obvious problems, none found. I can't seem to find any circuit diagrams online for the SNES so I don't even know where to start checking.
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You say both work fine plugged into position 2.
Is it true that neither works in position 1 ?
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