[Coco] powering a coco2 3134 with DC

[Steve Batson]

Is AC passed to any other part of the board? 

Steve Batson
Batson Photography
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> On Apr 21, 2015, at 1:34 PM, didier derny <didier at aida.org> wrote:
> 
> I'm trying to power a coco2 3134 with DC
> 
> 
> 
> On the schematics the transformer entry is followed by a bridge
> 
> So I connected + 12  / -12 directly  on the transformer pins
> 
> 
> 
> The power supply is running  (producing +12 / -12) 
> 
> I have 4.98v on the VCC pins of the chips
> 
> 
> 
> 
> 
> But black screen
> 
> 
> 
> Any idea ?
> 
> 
> 
> Thanks
> 
> 
> 
> --
> 
> Didier
> 
> 
> 
> 
> -- 
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