Does anyone know what's the actual voltage needed by the loudspeaker to work? I've tested it out the continuity of the loudspeakers (both the original on the replacing part) and they seem to work just fine, otherwise the output voltage from the motherboard on the contact while playing some music, swings quickly from 0 to 1mV.
after replacing the assembly, the phone doesn't turn on, but only shows the battery and the plug icons. There's anything I could do before contact the vendor?? Thanks for the help ^^