Hi,
I've been using this thread to troubleshoot my S4 and am wondering...Has anyone ever taken one of the sliders off of the mixer board? after opening this thing up and cleaning, i still get no response. I'm trying to figure out what tool i can use to pry the black box off of slider B without damaging the the ICs next to it. I have precision flathead screwdrivers but even those seem to nudge the ICs and LEDs on the board.