[volt-nuts] volt-nuts Digest, Vol 9, Issue 5

[steve gunsel]

Rob,

I have removed the 3 optional plug-in boards and that does not help.
There are 6 plug-ins that must be plugged in.
I checked the power supply voltages and they are all in spec.
When powered up, it ...
Recognizes the software (3.0.0, newer than that in the manual);
Recognizes the optional plug-ins, when plugged in;
Displays 112.94 VDC with the inputs shorted, but this changes with 
different ranges.
AC volts behave similarly.

Steve


At 08:00 AM 5/7/2010, you wrote:
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>Today's Topics:
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>    1. Fluke 8502A (steve gunsel)
>    2. Re: Fluke 8502A (Rob Klein)
>
>
>----------------------------------------------------------------------
>
>Message: 1
>Date: Thu, 06 May 2010 08:04:41 -0400
>From: steve gunsel <sgunsel at verizon.net>
>Subject: [volt-nuts] Fluke 8502A
>To: volt-nuts at febo.com
>Message-ID: <0L1Z00HS8YX7MQ31 at vms173001.mailsrvcs.net>
>Content-Type: text/plain; charset=us-ascii; format=flowed
>
>Hi,
>
>Does anyone have experience repairing one of these? I have two and
>neither works. The first one lights up, but with random digits on the
>display. I picked up the second hoping to get some spare parts, but
>almost all of the boards are marked "BAD", which they appear to
>be.  I downloaded the service manual, but at step 3 (of 103) it says
>to "insert interconnect-monitor PCB in the isolator slot", which I do
>not have. Is this thing fixable or should I toss it?
>Thank you.
>
>Steve - N8MYA
>Medina OH
>
>
>
>
>------------------------------
>
>Message: 2
>Date: Thu, 06 May 2010 19:20:26 +0200
>From: Rob Klein <rob.klein at smalldesign.nl>
>Subject: Re: [volt-nuts] Fluke 8502A
>To: Discussion of precise voltage measurement <volt-nuts at febo.com>
>Message-ID: <4BE2FA5A.7060404 at smalldesign.nl>
>Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
>Hi Steve,
>
>I would just unplug all module except the controller. See if the display
>is normal, then plug the modules back in, one at a time (power-off/on in
>between, of course!). When
>the display goes bad again, there's your culprit. Of course, if the
>display is bad with just the controller, well ... good luck ;-).
>
>I have an 8505A myself, with a bad IEEE interface, which also causes the
>display to go mad. Haven't had the time to repair it yet, but no
>interface is not such a big deal.
>
>
>Regards,
>Rob.
>
>
>steve gunsel schreef:
> > Hi,
> >
> > Does anyone have experience repairing one of these? I have two and
> > neither works. The first one lights up, but with random digits on the
> > display. I picked up the second hoping to get some spare parts, but
> > almost all of the boards are marked "BAD", which they appear to be.  I
> > downloaded the service manual, but at step 3 (of 103) it says to
> > "insert interconnect-monitor PCB in the isolator slot", which I do not
> > have. Is this thing fixable or should I toss it?
> > Thank you.
> >
> > Steve - N8MYA
> > Medina OH
>
>
>
>------------------------------
>
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>End of volt-nuts Digest, Vol 9, Issue 5
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