Sony MP3 player faulty (Sawley NG10)

I have to offer a faulty Sony NW-HD5 MP3 player. The fault is with the headphone jack which only connects to one channel. This might be fixable but is beyond me. It comes with an AC adapter, you will also need to download Sonic Stage software to enable you to download tracks onto it, this is available from the Sony website. Collection is from Sawley NG10.