On Sunday, May 8, 2022 at 2:03:31 PM UTC-7, Robert Roland wrote:
> On Sun, 8 May 2022 06:35:53 -0700 (PDT), Kenzo  
> wrote: 
> 
> >it won't power up 
> 
> It is likely that the power supply has failed. 
> 
> The 1571 has a very simple linear power supply. It should be easy to 
> fix. 
> 
> There is even a fuse, winch needs checking. 
> 
> Also, the solder joints for the transformer can crack. The transformer 
> is heavy, and there is nothing other than the solder joints holding 
> it. 
> 
> Be careful with mains voltage, though. 
> -- 
> RoRo
Thanks, I ordered a zoomfloppy today.
Regarding the 1571 I should just replace the linear power supply with an SMPS.  If the fuse is blown there must have been a reason. There is a meanwell that is a good match.  And there are 4 electrolytics on the logic board that should also be replaced.  
If I later find the heads are bad, I can use the SMPS for a different project...

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