Fix for Sony MZ-R55 Recording Self-start Problem

Hoshing Kwong ([email protected])
February 2000


Sony MZ-R55 units have been known to go into record mode while at idle and over-write unprotected MD.


The signal pin attached to the record switch is at a "floating" state and sensitive to battery voltage level.


Verify that the record switch is functioning properly (not sticky). Solder a small "surface mount type" capacitor (100 nf) between the signal pin of the record switch and ground. Refer to diagram attached for more details.

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