Terry,
No problem!! It is a great group. I like to give back when the opportunity arises.
I have quite a bit of experience with the 54111D and 54112D which are similar. These scopes do not have the same input plugins that the 54110D has.
You were lucky, with the power supply. I have seen a few with the control chip blown. HP used a custom designed Power supply chip in these scopes.
Regards,
John
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---------- Original Message ----------------------------------
From: Terry Oleksy <tloleksy@...>
Reply-To: hp_agilent_equipment@...
Date: Sun, 7 Jan 2007 17:22:07 -0800 (PST)
John
Thanks so much for the PDF files, was able to locate
problem, C12 had very high ESR problem.
I had missed it when I had first tested the Caps
before having the info you where so kind
to send. The data you provided led me back to that
circuit. Now all I need to do is learn how to operate
this sophisticated peace of equipment. You and others
may want to mark your power supply diagram, C12
doesn¡¯t appear to have been a good quality cap to
begin with.
Thanks again for your kindness.
T.O.
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