Hi guys-I have the same JVC model and had the same problem too. Basically, tapping the cassette compartment and resetting by removing the battery would help only temporarily.The problem is actually in the mode-switch, a very delicate switching device that controls access to various electrical functions of the unit. JVC have a replacement switch and I have my old switch with me to compare. It was certainly defective (within 3 months of purchase) and after replacing it, the unit never troubled me again. Also, try using JVC, Canon or Panasonic tapes only.I would not risk / try other brands. Keep a head cleaning tape handy- always.

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