Need help: DSD-440 with unresponsive formatter/control board

Jerry Weiss jsw at ieee.org
Tue Sep 20 13:47:17 CDT 2016


On Sep 20, 2016, at 1:37 PM, Julian Wolfe <jrw at lolqb.us> wrote:
> 
> Both green LEDs are on.  They're ALL on.
> 
> 

As LED 9 is on (sorry for not being clear), then the CPU is active.  That’s a good sign.

Definitely look at the DC Power up/down circuit first.  

Jerry



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