Are there any place where someone could buy parts L-SW4 and R-SW3 on the board? I got a GBA SP with a dead L-SW4.
@Hanafuda What would i be cleaning with the contact cleaner? the switch is enclosed with limited access to anything other than the back side of the board. I heated up the solder on that switch to try and strengthen the connection, it still didn't work. the system in question looks like it had something spilled on it at some point.
Got a $5 can of contact cleaner and the shoulder button is functional again. Thank you, Hanafuda.