I rescued a nice HP 339A distortion analyzer from an e-waste bin at work, but not before another piece of equipment was dropped in an sheared off the 400Hz filter button cap, which was lost.? There is about 1/8 inch of the push-button switch post left inside, behind the front panel, and the switch stills works fine if poked with a stick, but looks bad.

Questions:
1. Is there any source for the grey cap nowadays?
2. Could a remaining button cap next to it be pulled straight off as a sample?
3. Has anyone made a new button from a sample with either epoxy in a mold or 3D printer?
4. Any other ideas for button cap repair/replacement I'm missing besides buying another 339A for parts?

Thanks.
-Bruce A., Santa Barbara

In message <[email protected]>, bandrsn via
groups.io <bandrsn@...> writes

I rescued a nice HP 339A distortion analyzer from an e-waste bin at
work, but not before another piece of equipment was dropped in an
sheared off the 400Hz filter button cap, which was lost.? There is
about 1/8 inch of the push-button switch post left inside, behind
the front panel, and the switch stills works fine if poked with a
stick, but looks bad.

Questions:
1. Is there any source for the grey cap nowadays?
2. Could a remaining button cap next to it be pulled straight off
as a sample?
3. Has anyone made a new button from a sample with either epoxy in
a mold or 3D printer?
4. Any other ideas for button cap repair/replacement I'm missing
besides buying another 339A for parts?

Thanks.
-Bruce A., Santa Barbara

Bruce..

*Knobs for 339A's are worse than hens teeth and rocking horse muck!.

If you can mould one or get someone with a 3D printer that will be your
best bet.

Seems such a shame to get one to scrap, they are an excellent unit:-)

As to the Oik who dropped the other gear on it, Lynch him!!!


* I did get a few off a supplier in Canada, Scheer or sounds like that
she there did have a few if you or anyone else can find who that may be
they do advertise on the group sometimes might be worth asking!..
--
Tony Sayer

开云体育

Good Day,

close - it is Walter and Susan in BC, Canada and their company is named Sphere... "The Sphere Research Canadian Test Equipment Site"
These are good people. The knobs you are looking for are currently not listed:

Always worth a look:

But may I suggest that you send a kind email to walter2 -at- sphere.bc.ca and see if can source any for you...

Cheers,

Magnus

As much as those things are worth, someone trashed one? Holy crap. I'm guessing suits.

-Dave

On November 13, 2021 3:18:27 PM "bandrsn via groups.io" <bandrsn@...> wrote:

I rescued a nice HP 339A distortion analyzer from an e-waste bin at work, but not before another piece of equipment was dropped in an sheared off the 400Hz filter button cap, which was lost. There is about 1/8 inch of the push-button switch post left inside, behind the front panel, and the switch stills works fine if poked with a stick, but looks bad.

Questions:
1. Is there any source for the grey cap nowadays?
2. Could a remaining button cap next to it be pulled straight off as a sample?
3. Has anyone made a new button from a sample with either epoxy in a mold or 3D printer?
4. Any other ideas for button cap repair/replacement I'm missing besides buying another 339A for parts?

Thanks.
-Bruce A., Santa Barbara

--
Dave McGuire, AK4HZ
New Kensington, PA

Suits have a different perspective.

For a suit.....

What is this asset?? Does it cost too much to have?? Is it economical for us to get rid of it?? If so, throw it away and claim a tax writeoff.

They're not paid to consider the intrinsic value of that to anybody.? It doesn't contribute to how they are judged, which is the corporate bottom line.

For a scrapper?

What are the pieces worth?? What can I get for these useless cables I've cut off, they're all copper, aren't they?? Manuals? What's the price of used paper per ton?? How much gold can I get from this?

Hobbiests and engineers?

Best of luck.

Harvey

I think I have an offer for a button - thanks guys.

Continuing the e-waste saga ....

About two weeks ago, my current company was getting ready to move to new, larger quarters, and management decided to get rid of anything relatively old.
This happened to include a mint condition Tektronix 7104 with 2x 7A29, 7B15, 7B10 plugins.? I saw it sitting forlornly next to the large dumpster and after double-checking on its fate, I decided to relieve the trash haulers the effort of hoisting it up and into oblivion.? I later found the FET probes in their cases at the bottom of another pile.
Took it home and dusted it off, cleaned it up to like-new condition, and fired it up.? Works perfectly with a bright trace and no burn in.

I've since found out that this model was the fastest analog scope that Tektronix ever made, if my history is correct.
Displays very cleanly and solidly triggers past 1.3 GHz.

Go figure.
The moral - keep your eyes open when you hear of a company move or its cal lab closing down and everything there pre-1991 is suddenly "worthless".

Cheers,
Bruce A., Santa Barbara

Oh, I'm very much aware. (not my first BBQ) The problem is that people in general, but suits in particular, don't understand the difference between "ownership" and "custodianship".

-Dave

On November 13, 2021 8:16:09 PM "Harvey White" <madyn@...> wrote:

Suits have a different perspective.

For a suit.....

What is this asset? Does it cost too much to have? Is it economical
for us to get rid of it? If so, throw it away and claim a tax writeoff.

They're not paid to consider the intrinsic value of that to anybody. It
doesn't contribute to how they are judged, which is the corporate bottom
line.

For a scrapper?

What are the pieces worth? What can I get for these useless cables I've
cut off, they're all copper, aren't they? Manuals? What's the price of
used paper per ton? How much gold can I get from this?

Hobbiests and engineers?

Best of luck.

Harvey


On 11/13/2021 7:06 PM, Dave McGuire wrote:

As much as those things are worth, someone trashed one? Holy crap. I'm guessing suits.

-Dave

On November 13, 2021 3:18:27 PM "bandrsn via groups.io" <bandrsn@...> wrote:

I rescued a nice HP 339A distortion analyzer from an e-waste bin at work, but not before another piece of equipment was dropped in an sheared off the 400Hz filter button cap, which was lost. There is about 1/8 inch of the push-button switch post left inside, behind the front panel, and the switch stills works fine if poked with a stick, but looks bad.

Questions:
1. Is there any source for the grey cap nowadays?
2. Could a remaining button cap next to it be pulled straight off as a sample?
3. Has anyone made a new button from a sample with either epoxy in a mold or 3D printer?
4. Any other ideas for button cap repair/replacement I'm missing besides buying another 339A for parts?

Thanks.
-Bruce A., Santa Barbara

--
Dave McGuire, AK4HZ
New Kensington, PA

--
Dave McGuire, AK4HZ
New Kensington, PA

开云体育

You are quite lucky.? Look at the documentation on the scope, and do not run it at high intensity because of the (relatively) limited lifetime of the Microchannel CRT.?

While there's protective circuitry to help the CRT, being conservative is not a bad idea.? I don't normally use mine, using a 7904 with the same plugins.? If I need it, though, it's there.

Harvey

On Sat, Nov 13, 2021 at 08:16 PM, Harvey White wrote:

If so, throw it away and claim a tax writeoff.?

Corporations tend to depreciate expensive equipment while it is in use?in order to take the tax write off. ?When it is fully depreciated,?
it can only be scrapped or donated, not sold. ?Otherwise, IRS gets annoyed…

Larry
AC9OX

In message <[email protected]>, Larry McElhiney via
groups.io <lmcelhiney@...> writes

On Sat, Nov 13, 2021 at 08:16 PM, Harvey White wrote:

If so, throw it away and claim a tax writeoff.?

tend to depreciate expensive equipment while it is in use?in order
to take the tax write off. ?When it is fully depreciated,?
it can only be scrapped or donated, not sold. ?Otherwise, IRS gets
annoyed&hellip;

Very ecologically sound that, wonder if it was discussed at COP26?
suspect not!..

Magnus, Thanks for pointing out the right name of the suppliers a few
posts back, I reckon i too their entire supply of QTY 4 off 339A
knobs:).

Whilst on that subject those comprise of a Brass metal core and a
plastic moulding around them. Is it possible to use a 3D printer to go
over the brass metal former to "print" up a complete control knob at
all?...



--
Tony Sayer

Of course it can be sold, but after it is depreciated,
anything you get for it is income, and as such subject
to taxes of all sorts.

Remember, companies sell scrapped depreciated equipment
all of the time.

The big question is does the company want to go to the
effort to enter the depreciated item into its books as
inventory, and to process the sale. Any sale to an
individual will (depending on the state) trigger a sales
tax... And may require the company to get a sales license,
and a sales tax license. B-to-B sales need neither in
most states.

-Chuck Harris


On Sat, 13 Nov 2021 18:38:33 -0800 "Larry McElhiney via groups.io"
<lmcelhiney@...> wrote:

On Sat, Nov 13, 2021 at 08:16 PM, Harvey White wrote:

If so, throw it away and claim a tax writeoff.

Corporations tend to depreciate expensive equipment while it is in
use?in order to take the tax write off. ?When it is fully
depreciated, it can only be scrapped or donated, not sold.
?Otherwise, IRS gets annoyed…

Larry
AC9OX

Are you implying that materials owned by my company,
and hence me, aren't mine?

Communism and socialism are based on that very idea.

The belief that personal ownership does not exist, but
rather people only have stewardship of their "belongings",
carries forward to the logical conclusion that people
are not the owners of their bodies and minds.

That condition is known as slavery.

-Chuck Harris


On Sat, 13 Nov 2021 20:59:30 -0500 "Dave McGuire"
<mcguire@...> wrote:

Oh, I'm very much aware. (not my first BBQ) The problem is that
people in general, but suits in particular, don't understand the
difference between "ownership" and "custodianship".

-Dave

On November 13, 2021 8:16:09 PM "Harvey White"
<madyn@...> wrote:

Suits have a different perspective.

For a suit.....

What is this asset? Does it cost too much to have? Is it
economical for us to get rid of it? If so, throw it away and claim
a tax writeoff.

They're not paid to consider the intrinsic value of that to
anybody. It doesn't contribute to how they are judged, which is
the corporate bottom line.

For a scrapper?

What are the pieces worth? What can I get for these useless cables
I've cut off, they're all copper, aren't they? Manuals? What's the
price of used paper per ton? How much gold can I get from this?

Hobbiests and engineers?

Best of luck.

Harvey


On 11/13/2021 7:06 PM, Dave McGuire wrote:

As much as those things are worth, someone trashed one? Holy
crap. I'm guessing suits.

-Dave

On November 13, 2021 3:18:27 PM "bandrsn via groups.io"
<bandrsn@...> wrote:

I rescued a nice HP 339A distortion analyzer from an e-waste bin
at work, but not before another piece of equipment was dropped in
an sheared off the 400Hz filter button cap, which was lost.
There is about 1/8 inch of the push-button switch post left
inside, behind the front panel, and the switch stills works fine
if poked with a stick, but looks bad.

Questions:
1. Is there any source for the grey cap nowadays?
2. Could a remaining button cap next to it be pulled straight off
as a sample? 3. Has anyone made a new button from a sample with
either epoxy in a mold or 3D printer? 4. Any other ideas for
button cap repair/replacement I'm missing besides buying another
339A for parts?

Thanks.
-Bruce A., Santa Barbara

--
Dave McGuire, AK4HZ
New Kensington, PA

--
Dave McGuire, AK4HZ
New Kensington, PA

No, Chuck, I'm not implying that at all. Go pick a fight somewhere else.

-Dave

On November 14, 2021 8:32:23 AM "Chuck Harris" <cfharris@...> wrote:

Are you implying that materials owned by my company,
and hence me, aren't mine?

Communism and socialism are based on that very idea.

The belief that personal ownership does not exist, but
rather people only have stewardship of their "belongings",
carries forward to the logical conclusion that people
are not the owners of their bodies and minds.

That condition is known as slavery.

-Chuck Harris


On Sat, 13 Nov 2021 20:59:30 -0500 "Dave McGuire"
<mcguire@...> wrote:

Oh, I'm very much aware. (not my first BBQ) The problem is that
people in general, but suits in particular, don't understand the
difference between "ownership" and "custodianship".

-Dave

On November 13, 2021 8:16:09 PM "Harvey White"
<madyn@...> wrote:

Suits have a different perspective.

For a suit.....

What is this asset? Does it cost too much to have? Is it
economical for us to get rid of it? If so, throw it away and claim
a tax writeoff.

They're not paid to consider the intrinsic value of that to
anybody. It doesn't contribute to how they are judged, which is
the corporate bottom line.

For a scrapper?

What are the pieces worth? What can I get for these useless cables
I've cut off, they're all copper, aren't they? Manuals? What's the
price of used paper per ton? How much gold can I get from this?

Hobbiests and engineers?

Best of luck.

Harvey


On 11/13/2021 7:06 PM, Dave McGuire wrote:

As much as those things are worth, someone trashed one? Holy
crap. I'm guessing suits.

-Dave

On November 13, 2021 3:18:27 PM "bandrsn via groups.io"
<bandrsn@...> wrote:

I rescued a nice HP 339A distortion analyzer from an e-waste bin
at work, but not before another piece of equipment was dropped in
an sheared off the 400Hz filter button cap, which was lost.
There is about 1/8 inch of the push-button switch post left
inside, behind the front panel, and the switch stills works fine
if poked with a stick, but looks bad.

Questions:
1. Is there any source for the grey cap nowadays?
2. Could a remaining button cap next to it be pulled straight off
as a sample? 3. Has anyone made a new button from a sample with
either epoxy in a mold or 3D printer? 4. Any other ideas for
button cap repair/replacement I'm missing besides buying another
339A for parts?

Thanks.
-Bruce A., Santa Barbara

--
Dave McGuire, AK4HZ
New Kensington, PA

--
Dave McGuire, AK4HZ
New Kensington, PA

--
Dave McGuire, AK4HZ
New Kensington, PA

On the subject of knobs.

If you have a dead/cracked knob, or access to a lathe, you can get the insert.? Aluminum will work equally well.? They knurled the knob insert.

Print the knob so that the center hole is very slightly smaller than the insert, but only by, say 10 thousandths.

Since the plastic has a relatively low melting point, all you need to do is to orient it properly (or not, you can thread the insert once put in).? Heat the insert gently, and push it in.? You may want a fixture to do this to keep the centers aligned and the shaft perpendicular.

Tek molded the knob around the insert.

Harvey

I'm not picking a fight, but trying to understand what
you said.

-Chuck Harris


On Sun, 14 Nov 2021 09:00:04 -0500 "Dave McGuire"
<mcguire@...> wrote:

No, Chuck, I'm not implying that at all. Go pick a fight somewhere
else.

-Dave

On November 14, 2021 8:32:23 AM "Chuck Harris" <cfharris@...>
wrote:

Are you implying that materials owned by my company,
and hence me, aren't mine?

Communism and socialism are based on that very idea.

The belief that personal ownership does not exist, but
rather people only have stewardship of their "belongings",
carries forward to the logical conclusion that people
are not the owners of their bodies and minds.

That condition is known as slavery.

-Chuck Harris


On Sat, 13 Nov 2021 20:59:30 -0500 "Dave McGuire"
<mcguire@...> wrote:

Oh, I'm very much aware. (not my first BBQ) The problem is that
people in general, but suits in particular, don't understand the
difference between "ownership" and "custodianship".

-Dave

On November 13, 2021 8:16:09 PM "Harvey White"
<madyn@...> wrote:

Suits have a different perspective.

For a suit.....

What is this asset? Does it cost too much to have? Is it
economical for us to get rid of it? If so, throw it away and
claim a tax writeoff.

They're not paid to consider the intrinsic value of that to
anybody. It doesn't contribute to how they are judged, which is
the corporate bottom line.

For a scrapper?

What are the pieces worth? What can I get for these useless
cables I've cut off, they're all copper, aren't they? Manuals?
What's the price of used paper per ton? How much gold can I get
from this?

Hobbiests and engineers?

Best of luck.

Harvey


On 11/13/2021 7:06 PM, Dave McGuire wrote:

As much as those things are worth, someone trashed one? Holy
crap. I'm guessing suits.

-Dave

On November 13, 2021 3:18:27 PM "bandrsn via groups.io"
<bandrsn@...> wrote:

I rescued a nice HP 339A distortion analyzer from an e-waste bin
at work, but not before another piece of equipment was dropped
in an sheared off the 400Hz filter button cap, which was lost.
There is about 1/8 inch of the push-button switch post left
inside, behind the front panel, and the switch stills works fine
if poked with a stick, but looks bad.

Questions:
1. Is there any source for the grey cap nowadays?
2. Could a remaining button cap next to it be pulled straight
off as a sample? 3. Has anyone made a new button from a sample
with either epoxy in a mold or 3D printer? 4. Any other ideas
for button cap repair/replacement I'm missing besides buying
another 339A for parts?

Thanks.
-Bruce A., Santa Barbara

--
Dave McGuire, AK4HZ
New Kensington, PA

--
Dave McGuire, AK4HZ
New Kensington, PA

--
Dave McGuire, AK4HZ
New Kensington, PA

开云体育

On Saturday 13 November 2021 07:06:06 pm Dave McGuire wrote:

As much as those things are worth, someone trashed one? Holy crap. I'm guessing suits.

-Dave

A testament to the ill effects of neckties!

On November 13, 2021 3:18:27 PM "bandrsn via groups.io" <bandrsn@...> wrote:

I rescued a nice HP 339A distortion analyzer from an e-waste bin at work, but not before another piece of equipment was dropped in an sheared off the 400Hz filter button cap, which was lost. There is about 1/8 inch of the push-button switch post left inside, behind the front panel, and the switch stills works fine if poked with a stick, but looks bad.

Questions:
1. Is there any source for the grey cap nowadays?
2. Could a remaining button cap next to it be pulled straight off as a sample?
3. Has anyone made a new button from a sample with either epoxy in a mold or 3D printer?
4. Any other ideas for button cap repair/replacement I'm missing besides buying another 339A for parts?

Thanks.
-Bruce A., Santa Barbara

--
Dave McGuire, AK4HZ
New Kensington, PA

--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, ?a critter that can
be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin

开云体育

That is just a voluntary restriction you have placed on
yourself by choice. An owner's prerogative.

I similarly choose not to beat-up my car with hammers, rocks
and baseball bats... but I could if it pleased me to do so
for some reason...

If you want to scrap the instrument and turn it into little
metal shavings, you can, and nobody can do a thing about it.

That isn't really a custodial relationship.

I get touchy about this subject because I have seen numerous
cases where people that do not have any stake in some thing,
be it a house, aircraft, computer, test equipment, cars, or
another, attempt to force the owner not to employ that item
in a way that the non-stake holder feels may cause it harm.

They never seem to have the money to buy out the owner, but
always want control, at the owner's expense.

-Chuck Harris


On Sun, 14 Nov 2021 17:16:14 +0000 "Dave Wise" <david_wise@...>
wrote:

I own my instruments, but I am mostly their custodian. Or steward,
if you like. I'm glad to have relationships other than ownership.

Dave Wise

From: [email protected]
[mailto:[email protected]] On Behalf Of Chuck
Harris via groups.io Sent: Sunday, November 14, 2021 8:51 AM To:
[email protected] Subject: Re:
[HP-Agilent-Keysight-equipment] Replacing missing button cap(s) - HP
339A

I'm not picking a fight, but trying to understand what
you said.

-Chuck Harris


On Sun, 14 Nov 2021 09:00:04 -0500 "Dave McGuire"
<mcguire@...> wrote:

No, Chuck, I'm not implying that at all. Go pick a fight somewhere
else.

-Dave

On November 14, 2021 8:32:23 AM "Chuck Harris" <cfharris@...>
wrote:

Are you implying that materials owned by my company,
and hence me, aren't mine?

Communism and socialism are based on that very idea.

The belief that personal ownership does not exist, but
rather people only have stewardship of their "belongings",
carries forward to the logical conclusion that people
are not the owners of their bodies and minds.

That condition is known as slavery.

-Chuck Harris


On Sat, 13 Nov 2021 20:59:30 -0500 "Dave McGuire"
<mcguire@...> wrote:

Oh, I'm very much aware. (not my first BBQ) The problem is that
people in general, but suits in particular, don't understand the
difference between "ownership" and "custodianship".

-Dave

On November 13, 2021 8:16:09 PM "Harvey White"
<madyn@...> wrote:

Suits have a different perspective.

For a suit.....

What is this asset? Does it cost too much to have? Is it
economical for us to get rid of it? If so, throw it away and
claim a tax writeoff.

They're not paid to consider the intrinsic value of that to
anybody. It doesn't contribute to how they are judged, which is
the corporate bottom line.

For a scrapper?

What are the pieces worth? What can I get for these useless
cables I've cut off, they're all copper, aren't they? Manuals?
What's the price of used paper per ton? How much gold can I get
from this?

Hobbiests and engineers?

Best of luck.

Harvey


On 11/13/2021 7:06 PM, Dave McGuire wrote:

As much as those things are worth, someone trashed one? Holy
crap. I'm guessing suits.

-Dave

On November 13, 2021 3:18:27 PM "bandrsn via groups.io"
<bandrsn@...> wrote:

I rescued a nice HP 339A distortion analyzer from an e-waste
bin at work, but not before another piece of equipment was
dropped in an sheared off the 400Hz filter button cap, which
was lost. There is about 1/8 inch of the push-button switch
post left inside, behind the front panel, and the switch
stills works fine if poked with a stick, but looks bad.

Questions:
1. Is there any source for the grey cap nowadays?
2. Could a remaining button cap next to it be pulled straight
off as a sample? 3. Has anyone made a new button from a sample
with either epoxy in a mold or 3D printer? 4. Any other ideas
for button cap repair/replacement I'm missing besides buying
another 339A for parts?

Thanks.
-Bruce A., Santa Barbara

--
Dave McGuire, AK4HZ
New Kensington, PA

--
Dave McGuire, AK4HZ
New Kensington, PA

--
Dave McGuire, AK4HZ
New Kensington, PA

hen party......