I agree these caps are the most failure-prone parts in the 3456A, and
also the 3455A. Sometimes they also cause damage to other parts like
the associated three-terminal regulators. Don't be surprised if
there's still more to fix after cap replacement - but usually easy to find.
I had one where
s back in operation.
> Thanks again!
>
> Dave - W6TE
>
>> Date: Sat, 27 Dec 2014 15:08:04 -0900
>> From: cbr...@woods.net
>> To: volt-nuts@febo.com
>> Subject: Re: [volt-nuts] HP 3456A -3 Fault
>>
>>
>> First suspect is always the small electrolyt
@febo.com
> Subject: Re: [volt-nuts] HP 3456A -3 Fault
>
>
> First suspect is always the small electrolytics on A10, followed by the
> large one on A10, and large one on A3, but those last 2 are large/high
> qual and seem to last much better.
>
>
> All 6 of my 3456As h
First suspect is always the small electrolytics on A10, followed by the
large one on A10, and large one on A3, but those last 2 are large/high
qual and seem to last much better.
All 6 of my 3456As had or developed issues with one or more of the small
caps.
All 6 have been re-capped with
A1
Thank you Bill,
I'll start looking at the power supplies.
Dave - W6TE
> From: wpgold3...@att.net
> To: volt-nuts@febo.com
> Date: Fri, 26 Dec 2014 16:36:00 -0800
> Subject: Re: [volt-nuts] HP 3456A -3 Fault
>
> Dave:
>
> These things are NOTORIOUS for fil
oking
for anything else.
Good luck,
Bill
- Original Message -
From: "David Smith"
To:
Sent: Friday, December 26, 2014 3:34 PM
Subject: [volt-nuts] HP 3456A -3 Fault
> Hello Friends,
> I have two HP 3456A's that have the same "-3" fault in the "test&
Hello Friends,
I have two HP 3456A's that have the same "-3" fault in the "test" mode. Both
DVM's started exhibiting this same fault about the same time. I've troubleshot
one of the DVM's to a failure in the Isolation Logic "Transmitter." I have no
waveform at the output of A3T1.
Before I contin
