Wednesday, July 30, 2008

Yamaha Portasound PSS-21 Synthetizer PCB

Yamaha Portasound PSS-21 Synthetizer PCB. Note the corrosion around the edges near the top right corner.
Portable equipment commonly suffers damaged from leaking batteries when left alone for a long period.
Batteries usually leak as the zinc casing becomes thinner with usage. The zince casing is actually the negative terminal of the battery.
Good batteries will have extra casing around the zinc casing but some do not.

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