9v unregulated is used for the cassette deck power. 9v AC only used on the the user port. The machine otherwise runs fine without it. rob On 06/04/2012 14:35, didier derny wrote: > Hi, > > I'm thinking to replace my big and heavy plus4 power supply.... > > I checked the schematics.... > > any idea of the use of the 9v unregulated ? (indicated on the > schematics) > and of 9v ac (I just found 9v ac on the user port...) > > what happened if the 9v ac is not connected ? > > any idea ? > > any idea for a replacement of the power supply (switching power > supply)... > > thanks > > -- > didier > > > Message was sent through the cbm-hackers mailing list Message was sent through the cbm-hackers mailing listReceived on 2012-04-06 14:00:10
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