> I have been plagued for years with my 87a giving Fault 9. Been back to
> the clowns at Alpha several times for same problem. The 87a may be
> Alpha's big mistake in their line. Piece of junk.
I think that's a bit harsh, Chuck. There are many 20 year-old, problem-free
87As performing very well on the bands every day. There's a reason why it's
faulting and it's a matter of uncovering the root problem. It's easy to
say that there's a design flaw when it's you that has the burden of
isolating a persistent problem.
By now, you know the fault is relates to "transmit PIN diode forward current
below minimum." But, the problem may be indirectly related to something
like the LV power supply or arcing on a wiring harness, for example.
I know that Alpha has the means to isolate these types of faults, including
quick component and/or board substitutions. Since it's been back to them
several times, is it an intermittent fault, occurring only occasionally?
Paul, W9AC
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