My headphones produce a squeeky, electronic sound. Only if I pull the plug a bit out of the socket it produces normal sound. (Not sure whether the quality is what it was though).
What could be the cause and can it be fixed?
Check if it is plug in the jack/socket properly. Try to examine it on different jack/socket.If it still does produce the same squeeky sound, the headphone might be damaged. It can be the wiring problem. Send it to the store where you had purchased and get assistance on this matter.