[volt-nuts] 732b transformer replacement

[Todd Micallef]

Sorry,

Tom beat me to it, I was having trouble with my "jems" misspelling.


On Wed, Jun 4, 2014 at 6:03 PM, Todd Micallef <tmicallef at gmail.com> wrote:

> Willy,
>
> Have you contacted Fluke about getting a replacement transformer? I would
> guess it would cost a lot, but one of your other alternatives is to buy the
> external battery pack when it pops up on fleabay. The last one cost about
> $700, but I bought mine for less than that. That would give you the the
> correct part.
>
> Your other choice is to feed the 12V from the 9pin adapter. You can get
> yourself a lab grade power supply or build your own and use it until you
> decide. The manual states on page 4-13 that you can supply an external
> 12-15vdc to power the unit. If you contact Fluke, they could probably give
> you the recommended source settings for the rear jack. You only need to
> worry once you decide to send it in for cal, which could be whenever you
> feel the 732B is stable.
>
> If you need me to take any measurements from my unit, I will either take
> it apart or dig out the readings I wrote down last year.
>
> By the way, my 732B-7001 had a problem too. The regulator U500 shorted
> from input to output putting 20+ volts across the battery. The battery
> sizzled and failed. You might want to check that circuit too in case there
> are more hidden jems.
>
> Good luck these units are nice and easier to tote than a 732A.
>
> Todd
>
>
> On Wed, Jun 4, 2014 at 5:16 PM, new <pitts7 at williams-net.com> wrote:
>
>> My 732b is fine but its transformer bit the dust before I got it.
>>
>> Actually, that's probably WHY I got it on fleabay.. its previous
>> owner changed the battery and still couldn't get it to charge!
>> So it went on fleabay as 'parts/not working'......
>> for a price I could afford!
>>
>> The primary is cooked. Using a fresh battery powers the standard,
>> though, with a solid 9.99999 volts on my junk 3458 for two months.
>>
>> I just want a transformer for 120V... don't need all the world's
>> voltages. Since it probably won't be guarded, I would unplug the
>> 732 and go on battery to do readouts to avoid powerline crosstalk
>> problems.
>>
>>  The best of all worlds would be to get the exact, correct
>> transformer.....
>>
>> Willy
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>
>