sony: Sony ICF-SW30L: How good were Sony capacitors in the 90''s?

After opeing this Sony ICF-SW30L I found a defective electrolytic capacitor in the power supply close to the audio power amplifier.

This is C56, 330uF/6.3V, from the well known and respected Japanese brand nichicon.

The capacitor is exploded, and it looks like it was subjected to a high temperature, probably caused by overvoltage coming from an inadequate external power supply adapter.

Or it was just a "bad apple" in the capacitor batch?

Anyhow, I have replaceed it with a similar unit but with an higher working voltage because I could not find an exact match in my spares box. The original capacitor is very small in height (around 7mm) but there is plenty of verticaal space in that region of the chassis, so I installed a 12mm cap, the smaller I could find.

 

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