Fm on Sansa View

Here is my problem when I select to use my FM radio the wheel and or the buttons either are very slow to respond or do not respond.  I have on many occasions been able to record from the FM in the past but now I cannot do anything, This is not the case with ant other selections all buttons and the wheel operate as always.  Any suggestions. I tried to reformat & set to factory settings. Did not work.  Thanks