What might be causing the ear cushion falling out?The ear cushion is constantly fallen out, and it is not stable. Also, this causes uncomfortable in using this device.
Answer to: What are the reasons that the headphone looses its audio connection?If the sound is not quite what it should be, do not forget to check your cord connections. You should try using the jack in the other earpiece of the headphone. Also, you might try plugging the headphones into a different device to rule that out.
Answer to: Why is one of the speakers working?In order to solve this problem, you should check to see if anything is blocking the speaker. If that is not the case, then there may be a loose internal wire or the speaker may need to be replaced.
Answer to: What might be causing the ear cushion falling out?Your headphones may be uncomfortable if one or both of the ear cushions have fallen out, or are coming away from the earpiece. This repair may involve using glue, so be sure to follow the manufacturer's instructions first. In addition, a needle and thread may work in other repairs. If repairing doesn't work, then the earpiece may need to be replaced.