I had a similar problem with a Fusion MS AV-700. For no explicable reason my USB-based music started having what sounded like random drop outs and "skips." The exact same album played perfectly in the CD drive, via bluetooth, etc. This turned into a year-long ordeal with Fusion who did try to solve the problem but never could.
First they replaced my Uni-Dock -- same problem. Then they sent me a new stereo, an upgraded MS AV-750. Same problem. They had me send them my flash drive -- they found no problems. They recommended a smaller flash drive -- no difference. They had me send them audio recordings and even videos. No solutions. They sent me their own flash drive with music recorded in different formats -- same problem. My own electronics
guru couldn't figure it out.
Fusion tech support said they escalated my case which came to mean they didn't want to deal with it anymore and almost a year passed without my hearing anything. (By this time I had my entire CD collection aboard.)
Finally, my local West Marine
manager (the source of my purchase) who had been keeping notes on all of this the whole time, told me he'd send his own installer over to check it out if I'd like. Well, the guy solved
A former audio engineer
, after testing multiple recording formats, the guy concluded that the chip set in the stereo was simply not up to the task, and suggested I keep the MS AV-750 and buy the new Fusion Apollo unit and see if it solved
the problem -- if yes, I could return the MS AV 750. Well, it worked perfctly and the new stereo is absolutely awesome. (Using my original flash drive.) The MS AV 750 was returned to Fusion and my CD collection has been returned to my storage