Chosen Solution
Only very faint sound coming from right-side speaker. Can it be replaced or checked for loose connection? Was dropped once onto a carpet and that might have done it.
Usually speakers can be easily replaced, since they are connected to the motherboard with a connector and a wire and not glued/soldered to MoBo. In your situation it is still true. So get a speaker part, follow that instrunction with only steps 1 and 6 and then in reverse: Asus Q302UA-BHI5T20 Motherboard Replacement
