i have two sets of speakers one for the computer and one for the tv(full 5.1 system). they all powered from the same amp. for comfort i bought a switch on aliexspress. when it arrived and i connected the speakers. one channel was playing weakly both speakers (right and left) and the other channel played storngly only the left speaker. over all it feels like only left is working.
i tried opaning the thing and it was very simple circut(just a switch and pcb with wires to the switch). i tried switching the switch, i tried wiring the wires my self, tried to connect ground between in and out. and it still does the same!!!.