I just bought two non-working Kenwood CS4035 scopes to muck around with, as I'm in the process of learning electronic repair, so figured they should teach me something.
They have linear power supplies, and on one of the PSU boards, there is a 4700uF electrolytic which had it top blown open.
Turns out that both scopes have had various repair/mods done before and this cap had been fitted in reversed polarity.
Anyway, out of interest, I figured I would see how a blown cap tested, so flattened the top and took a reading, which came back as 4800uF, with negligible ESR and V loss.
I was not expecting a reading anything like that, and it has never even entered my head that an exploded cap might still be usable
So my question is, could this capacitor still be used?
They have linear power supplies, and on one of the PSU boards, there is a 4700uF electrolytic which had it top blown open.
Turns out that both scopes have had various repair/mods done before and this cap had been fitted in reversed polarity.
Anyway, out of interest, I figured I would see how a blown cap tested, so flattened the top and took a reading, which came back as 4800uF, with negligible ESR and V loss.
I was not expecting a reading anything like that, and it has never even entered my head that an exploded cap might still be usable
So my question is, could this capacitor still be used?
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