VAXmate PSU

[Holm Tiffe]

Rob Jarratt via cctalk wrote:

> Thanks Eric, I had a private reply that said pretty much the same thing.
> 
>  
> 
> Last night I replaced the shorted diode and another electrolytic capacitor and the PSU started up on the bench, powering a load board and an RD53 hard disk. Ripple was good except on the -9V output, but that output doesn’t seem to have any capacitors after the final transformer, so I think it is OK.
> 
>  
> 
> I need to replace a few marginal capacitors on the video module now, while I have the machine in bits. Then I will put it all back together to see that it still works. I have a lingering worry that the failed diode was on the +28V supply to the video module and that there might be a fault on the video module, but it doesn’t appear to present a short circuit, so I am hopeful.
> 
>  
> 
> I will do a blog post once it is all back up and running.
> 
>  
> 
> Thanks
> 
>  
> 
> Rob
> 

Congratulations Rob, you made it.

Regards,

Holm
-- 
      Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe, 
     Freiberger Straße 42, 09600 Oberschöna, USt-Id: DE253710583
info at tsht.de Fax +49 3731 74200 Tel +49 3731 74222 Mobil: 0172 8790 741