[Test-Equipment] HP 8640B

[Eric Lemmon]

Glenn,

I believe that QEX Magazine had an article (sorry, I don't recall the
issue) wherein an owner of that particular signal generator describes the
appropriate repair for that symptom.  IIRC, the cause was an open
resistor.  Try searching the ARRL Website.

73, Eric Lemmon WB6FLY

Glenn Little WB4UIV wrote:

> I have an 8640B that the display is flashing all zeros. Any ideas as to
> what would cause this?
>
> Thanks
> 73
> Glenn
> WB4UIV
>
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