Yellow button stays pressed (even with a different neck)

I replaced the 220uf 10v capacitor because the guitar would not sync. Now it syncs fine but it thinks the yellow button is always pressed (no idea if it did this before fix since it would not sync). I tried changing the neck with another one and still has the problem so it is not the buttons or fret board. I went in and removed excess solder thinking it was bridged, and now both yellow and blue are always pressed. any ideas?