Just got a Yamaha CR-400 and worked great for half hour. I then turned off and came back today and played for about 5 minutes then left channel cuts out gradually. Flipped power switch repeatedly and it will come back and be fine for an indefinite amount of time, 2-3 songs, then goes out. Now it is right channel which is cutting out, and as mentioned only thing that cures it is to rapidly flip power switch til it comes back then cuts out again as I mentioned. Is this a basic Deoxit job? Or something worse, gulp!