[volt-nuts] Fluke 343 arrived, trip behaviour

Fabio Eboli fabioeb at quipo.it
Sat May 12 07:36:27 UTC 2012


Another question for who opened these units before:
my 343 main board is marked 341 3003, is the board shared
between the two models?
If I remember correctly in the schematics the differences
on the mainboard should be some components values,
is this correct?

Fabio.

m k <m1k3k1 at hotmail.com> ha scritto:

>
> Hi, Fabio,
>
> Also dont forget that the electroytics will be leaky with not being  
> used for a while. After cleanng, try and leave it on overnight to  
> reform them, unless it seems to be getting hot that is.
>
> M K
>
>> Date: Sat, 12 May 2012 09:08:14 +0200
>> From: fabioeb at quipo.it
>> To: volt-nuts at febo.com
>> Subject: Re: [volt-nuts] Fluke 343 arrived, trip behaviour
>>
>> Frank Stellmach <frank.stellmach at freenet.de> ha scritto:
>>
>> > Hello Fabio,
>> >
>> ...
>> >
>> > On your unit, I suspect the crowbar driver circuitry and/or sink
>> > supply to work incorrectly.
>> >
>> > Frank
>>
>> Hello Frank, thank you, now I don't have time, but I opened
>> the unit and saw a lot of dirt, this unit is old ,
>> the selectors plastic parts seem a little fragile and
>> one was repaired in the past.
>> when I have a little time I'll clean it and check the circuitry,
>> I downloded the manual, the important is that the matched resistors
>> and the voltage reference seem to be ok, the rest should be not hard to fix.
>>
>> Fabio.
>>
>
>
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