The Panasonic RQ-2102 is a portable cassette recorder that was made by Panasonic in 1994. While it has long been discontinued, it remains a popular collector's item to this day.
Your battery may be damaged. The best thing to do is to replace the batteries with new ones. Make sure they are 4 C batteries. Also, if you are using an AC Adapter, make sure it is plugged in both your device and a working outlet.
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