Where can I get a Musical Fidelity x10v3 serviced

I just bought an x10v3 from a member, and after using it for a month or so, I have noticed a significant amount of static/fuzz in the right channel at higher levels. I tried the "pass thru" outputs, and they are clean as a whistle. I also tested all other sources to my preamp and they also are clean. Some days are better than others, but it is always there. Help! I appreciate any help/suggestions.

Bruce Miller