92 S500 radio making weird noises. IE, loud high pitched tone/crackle
My 92 S500's radio started making a loud high pitched tone and/or crackle.
If I turn off radio then turn back on it will work fine for another 10-15min or 10-15 sec. Has anyone had this happen to them? Dont know where to start.
Thanks. Jay
PS. I'm in Canada and we started using the S500 tag in 1992.
Dont want anyone to think I have the year or model posted wrong. 
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