ah, hello everyone

I have a problem with my Becker cassette deck in my 87' 300E.
I feel like it skips or something, like a cd player. It would turn off by itself when I drive on bumpy roads, or take a turn.
What is with this piece of junk
how can i solve this problem.

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87' 300E champagne - Euro headlights and corners, 8-hole rims, 140,000miles/220,00km.