Re: Fixing the C900 power supply

From: Gerrit Heitsch <>
Date: Fri, 09 Jan 2015 22:33:35 +0100
Message-ID: <>
On 01/09/2015 05:19 PM, Martin Hoffmann-Vetter wrote:
> Hello Michau,
>>> My C128DCR's PSU had those golden coloured ROE electrolytic caps as
>>> well, and in my case two of those were shorted.
>> There are indeed five of them there. They are labeled something like
>> "2200/15" - I assume this means 220o uF and 5 Volts?
> Yes, 2200/15 means the capacity of 2200 µF and a proof voltage of max. 15V. Normally the caps need a proof voltage of the double norminally voltage. Higher is good (for longer life) but not needed. So the caps in the 5V way must be 10V, in the 12V way you need 25V.

Ich have plenty power supplies that use 16V caps for the 12V part 
without blowing up. I have also seen 6.3V caps in 5V curcuits that gave 
no problems.


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Received on 2015-01-09 22:00:37

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