[volt-nuts] Solartron 7071 beeping about twice a second

[J. L. Trantham]

I wonder if you have a small piece of 'FOD' floating around in the front
panel contacts?

I have never taken a front panel for one of these apart but would suspect
there would be a way to separate the buttons from their contacts and perhaps
clean them.  If you could do the disassembly in a clean plastic tub then
carefully inspect for any small 'pieces' that might fall out, it might
explain what the problem was.

Glad you are making progress.

Joe

-----Original Message-----
From: volt-nuts-bounces at febo.com [mailto:volt-nuts-bounces at febo.com] On
Behalf Of David C. Partridge
Sent: Wednesday, January 30, 2013 12:53 PM
To: 'Discussion of precise voltage measurement'
Subject: Re: [volt-nuts] Solartron 7071 beeping about twice a second

And just to make a "monkeys uncle" out me, it just started working after
reconnecting the keyboard for the nth time.

Confused ... You bet, especially as I cannot now provoke the fault (except
by holding down the DIG-FILT key or shorting pins 5 and 6).

Dave
-----Original Message-----
From: volt-nuts-bounces at febo.com [mailto:volt-nuts-bounces at febo.com] On
Behalf Of David C. Partridge
Sent: 30 January 2013 17:49
To: 'Discussion of precise voltage measurement'
Subject: Re: [volt-nuts] Solartron 7071 beeping about twice a second

Further information:

Shorting pins 5 and 6 of PL2 causes the same symptoms, as does pressing and
holding the DIG FILT key on another meter.

The odd thing is though that an ohms test between 5 and 6 of keyboard is OC
- which does not make sense to me?

Dave

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