Having done customer support in the past on PLC related equipment, you 
quickly learn that when someone calls you with a problem where they 
can't communicate with it, it is no longer operational etc;
The first question you always ask, is there a power on light on the 
front of the controller, and what color is it?  That way they look to 
make sure it is actually on.   The power on indicator lights were always 
green, but they don't know that.  :-)

Dave



On 9/27/2012 9:41 AM, Dave Caroline wrote:
> I favorite thing that happened to a few of us at a previous job fixing
> electronic kits (amplifiers tuners etc)
> one sits there scope probe in hand probing everywhere on the board and
> someone wanders by and says
> I would work better if you switch it on!
>
> I have been on both sides of that one :)
>
> Dave Caroline
>
>    


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