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Hello everybody!
My old and trusty 3466A developed a problem! It's the multimeter I use
more often, I've got the battery option (usually I need to change the
batteries every 10 years, and yes, I have this one for more than 20
years now).
The problem is that it developed an internal short in one of the range
switches, so manual ranges don't work anymore (but one position). I
haven't yet removed all the range switches to check which one failed.
Selecting the auto-range works well in Voltage and Resistance modes,
but as you might know if you have a similar model, the Current measure
works only on manual ranges, so I'd very much fix it if I can.
Now, I might be able to fix the switches if they can be opened, but
I'm also asking if anyone has a complete range switch assembly
(switches from S7 to S14, all coupled) from a parts unit that I can
buy.
Thanks in advance
Frank

Never mind, looks like the short was caused by some metal debris that
I've found under one of the switches. Who knows how they got there.
Too bad I removed all the switches before finding that out.
The 3466A is working again.
On Thu, Nov 1, 2018 at 6:15 PM Francesco Messineo
<francesco.messineo@...> wrote:

Hello everybody!
My old and trusty 3466A developed a problem! It's the multimeter I use
more often, I've got the battery option (usually I need to change the
batteries every 10 years, and yes, I have this one for more than 20
years now).
The problem is that it developed an internal short in one of the range
switches, so manual ranges don't work anymore (but one position). I
haven't yet removed all the range switches to check which one failed.
Selecting the auto-range works well in Voltage and Resistance modes,
but as you might know if you have a similar model, the Current measure
works only on manual ranges, so I'd very much fix it if I can.
Now, I might be able to fix the switches if they can be opened, but
I'm also asking if anyone has a complete range switch assembly
(switches from S7 to S14, all coupled) from a parts unit that I can
buy.
Thanks in advance
Frank

On 11/1/18 2:25 PM, Francesco Messineo wrote:

The 3466A is working again.

Do you mean a 3456A DVM? I have two of those...very reliable and nostalgia for a first
manufacturing job where one was used to do in circuit tests.

On Thu, Nov 1, 2018 at 8:46 PM John Griessen <john@...> wrote:

On 11/1/18 2:25 PM, Francesco Messineo wrote:

The 3466A is working again.

Do you mean a 3456A DVM? I have two of those...very reliable and nostalgia for a first
manufacturing job where one was used to do in circuit tests.bl

Nope, 3466A, little DVM of the late '70s, very reliable and portable
enough to go around in the lab, battery rechargeable option.
I also have a 3456A but I use it only for the precision jobs :)