Sony WM-BF64 Electronic Engineering
The WM-BF64 has wonderful intricate electronic and mechanical engineering, and it was from a time when someone such as Akio Morita would have encouraged his engineers to find ways and solutions to miniaturise the circuits and electronics.
This particular Walkman has very thin plastic cogwheels that can break with rough-handedness. Ideally, you should store your unit is a cool dry place, if you wish it to last long.
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Sony WM-BF64Electronic Engineering
Opening the Back Cover
Walkman Repair
Drive Belt Repair
Radio
Power Supply