[Test-Equipment] HP 8340A problem

[Roger Rehr]

Problem was completely resolved with a second round of board reseating.
Thanks to all that responded privately with suggestions!

73,

Roger Rehr
W3SZ

On Thu, 24 Mar 2016 01:10:58 -0400
Roger Rehr <roger at w3sz.com> wrote:

> HI all,
> 
> I am having an intermittent but persistent problem with an HP 8340A
> synthesized sweeper that I have.  The problem is one of spurious
> signals that "look" to me like loss of lock at some stage, but all
> indications are that all stages are locking properly.  Things are
> fine when the unit is first turned on from "Standby", but within
> minutes the problem develops.
> 
> If you are interested in taking a look and possibly offering some
> suggestions as to where I should look next with my troubleshooting,
> please see a web page with further details, that I created to avoid
> cluttering up the list:
> http://w3sz.x10.mx/HP_8340A_SpectrumAnalyzerProblems.html
> 
> Let me know if you need more information.
> 
> Thanks in advance!
> 
> 73,
> 
> Roger Rehr
> W3SZ