Ok Ed,

So I did the procedure you described and still have the NO SYNC.
I tried a number of other variations but the NO SYNC doesn't change.

What does change is the LED blinking sequence of various boards.
Some is a steady pulse blink at one point. Then another is a very rapid
blink that just continues until power is removed. Also at one point they
were just full steady on.

The only thing that is consistent is the NO SYNC.

Please correct me if I am wrong. This NO SYNC would be there because there
is no synchronization with the timing cycle of the motherboard?? Or would be
be with the extension board??

What would be great, would be to know for sure if it was the mother board.
If I was assured that it was the mother board I would not be totally opposed
to acquiring a replacement board. Then I would replace my office DHS system
with this system.

So are there any thoughts as to if this NO SYNC is a problem with the motherboard??

Thanks in advance.

Les