Re: Bill West keytop puller
I used tweezers and dental picks to gently remove the springs, clean them and their seats, and reinsert with no lubricant (none needed in my opinion).
Thanks,
Barry - N4BUQ
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----- Original Message ----- From: "Don Bitters via groups.io" <donbitters@...>
To: [email protected]
Sent: Sunday, April 12, 2020 5:28:56 PM
Subject: Re: [HP-Agilent-Keysight-equipment] Bill West keytop puller
My procedure on the 8566/8568 SA’s (same key switches) was to to remove the
front panel, then the keyboard, then use a swab with IPA (isopropyl alcohol)
and rotate the swab on the metal spring - above and below the red plastic
bridge that hold the spring in the switch, then repeat with DeOxit. Then
exercise the switch, checking for
proper operation. This also allows you to check for missing springs,
misaligned springs, rusty springs, and dirty springs. I never had repeat
issues with these switches unless the operating environment was very dirty.
Don Bitters
|
Re: non-profit engineering
This is actually very interesting and worthy of further discussion:
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On Sun, Apr 12, 2020 at 01:27 PM, Tam Hanna wrote:
(Snip) Now I really worry about our profession. This is a little known fact: the Syrian government did a study of religious and political extremists. The results were shocking: I expected psychoanalysts, students of gender, philosophers and other "talk scientists" to take the lead. But it actually was electrical engineers taking the lead...
?
(snip) Tam
With best regards
?
Tam HANNA (emailing on a BlackBerry PRIV)
?
?
Enjoy electronics? Join 14k other followers by visiting the Crazy Electronics Lab at
?
?
Am 12. April 2020 19:16:30 MESZ schrieb Carsten Bormann <cabocabo@...>:
On 2020-04-12, at 14:31, Chuck Harris <cfharris@...> wrote:
So, Germany has changed to allow its people to wander
the streets wearing swastika’s?
Of course not. We’re not idiots.
But you don’t get "in jail for 10 years" for “saying something”.
Seriously bad actors like (*) do get in trouble, though. Don’t operate like him.
I’m sorry I have to bring this up again, but the kind of malicious misinformation that started this side conversation cannot stand.
Grü?e, Carsten
(*) I actually worked with the guy during one of his lucid phases, at the time when he did some work for the customer for a board/firmware design I was involved with. Incredibly brilliant guy. His renewed downturn is a sad, sad story. But of course off-topic here.
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Re: Bill West keytop puller
There was a tweezer like tool that was made of very thin spring steel wire that was inserted between the key cap on opposite corners, and front panel, rotated 45 degrees, then pull outward to remove the key cap.
I suspect you could make a similar tool from a paper clip.
Don Bitters
|
Re: Bill West keytop puller
That's exactly what I did on my 8566B. I did have to replace a bunch of springs. The keyboard has been trouble-free ever since.
DaveD
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On 4/12/2020 6:28 PM, Don Bitters via groups.io wrote: My procedure on the 8566/8568 SA’s (same key switches) was to to remove the front panel, then the keyboard, then use a swab with IPA (isopropyl alcohol) and rotate the swab on the metal spring - above and below the red plastic bridge that hold the spring in the switch, then repeat with DeOxit. Then exercise the switch, checking for
proper operation. This also allows you to check for missing springs, misaligned springs, rusty springs, and dirty springs. I never had repeat issues with these switches unless the operating environment was very dirty.
Don Bitters
--
This email has been checked for viruses by Avast antivirus software.
|
Re: Bill West keytop puller
My procedure on the 8566/8568 SA’s (same key switches) was to to remove the front panel, then the keyboard, then use a swab with IPA (isopropyl alcohol) and rotate the swab on the metal spring - above and below the red plastic bridge that hold the spring in the switch, then repeat with DeOxit. Then exercise the switch, checking for
proper operation. This also allows you to check for missing springs, misaligned springs, rusty springs, and dirty springs. I never had repeat issues with these switches unless the operating environment was very dirty.
Don Bitters
|
Re: non-profit engineering
yes it is there but can anybody tell us which part of this thread is even remotely related to HP/Agilent equipment? so instead of looking at the bottom of your email, i suggest you look at the title/subject line of your email and it says? [email protected]?
On Sun, Apr 12, 2020 at 06:00 PM, Lou Blasco wrote:
For those of you that have had enough, look at the bottom of your email. There's a link that says "Mute This Topic". Click the link and follow the instructions.?
?
This hen-party should go offline.
?
?
================================================================================
On 4/12/2020 12:27 PM, Tam Hanna wrote:
Hello,
Sorry to take this even more off topic: Mahler is an electrical engineer??? I mean, OK, he bedded a woman 25 years his younger, which is quite common with engineers who pick up Game as a side hustle.
Now I really worry about our profession. This is a little known fact: the Syrian government did a study of religious and political extremists. The results were shocking: I expected psychoanalysts, students of gender, philosophers and other "talk scientists" to take the lead. But it actually was electrical engineers taking the lead...
And nope, I am too much of an Alcoholic to even consider Islamism. I would fight FOR beer, not against it.
Tam
With best regards
Tam HANNA (emailing on a BlackBerry PRIV)
Enjoy electronics? Join 14k other followers by visiting the Crazy Electronics Lab at
Am 12. April 2020 19:16:30 MESZ schrieb Carsten Bormann <cabocabo@...>:
On 2020-04-12, at 14:31, Chuck Harris <cfharris@...> wrote:
So, Germany has changed to allow its people to wander the streets wearing swastika’s?
Of course not. We’re not idiots.
But you don’t get "in jail for 10 years" for “saying something”.
Seriously bad actors like (*) do get in trouble, though. Don’t operate like him.
I’m sorry I have to bring this up again, but the kind of malicious misinformation that started this side conversation cannot stand.
Grü?e, Carsten
(*) I actually worked with the guy during one of his lucid phases, at the time when he did some work for the customer for a board/firmware design I was involved with. Incredibly brilliant guy. His renewed downturn is a sad, sad story. But of course off-topic here.
Groups.io Links: You receive all messages sent to this group.
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Mute This Topic: /mt/72936034/102401
Group Owner: [email protected]
Unsubscribe: /g/HP-Agilent-Keysight-equipment/leave/defanged [tamhan@...]
?
?
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I'm happy to report that I was able to disassemble the noisy pot, clean out the carbon dust, put a couple of drops of DeoxiT on the moving parts (wish I had FaderLub but...) and reassembled it. It works so well now! Glad I decided to do that.
Thanks,
Barry - N4BUQ
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----- Original Message ----- From: "Barry" <n4buq@...>
To: [email protected]
Sent: Friday, April 10, 2020 2:22:53 PM
Subject: Re: [HP-Agilent-Keysight-equipment] HP 334A Balance Pots
I may try prying them open as well so as to be a bit more careful about how
I'm cleaning things in there.
Thanks,
Barry - N4BUQ
----- Original Message -----
From: "Richard Knoppow" <dickburk@...>
To: [email protected]
Sent: Friday, April 10, 2020 1:45:25 PM
Subject: Re: [HP-Agilent-Keysight-equipment] HP 334A Balance Pots
?? I have had some luck by prying the covers off for cleaning
and then crimping the tabs back. Can't be done where the pots are
stacked. AB were the best of the bunch are a pain to clean.
Ohmite sold these same pots under their own name. Same for fixed
composition resistors, Ohmite and AB are actually all AB. Ohmite
actually says this in some of its early advertising. I have no
idea what the story behind this was.
On 4/10/2020 11:30 AM, ebrucehunter via groups.io wrote:
Barry,
I have one of these instruments, but it is too buried to easily
allow inspection to determine what type of pots were used.
If the values are above 1k, they are probably not wire-wound.
If they happen to be Allen-Bradley (AB) pots, an age old remedy
is to take a 1/16-inch drill bit and drill a hole in the cover
- in the outer crevice - at the bottom of the pot away from the
terminals.? The snout of a can of contact cleaner can then be
inserted in the drilled hole to blast the interior of the pot.
This cleaning will typically last for two or three years and
then you might have to do it again.? The access hole remains
available.? In drilling the hole, metal chips seem to be pulled
outward and are unlikely to enter the pot.? But be careful so
that when the drill bit breaks through, that it does not enter
and damage the pot.
Often these pots can be cleaned by pulling outward on the shaft
-- it will move about 1/16-inch -- while quickly turning the
knob from end to end.
Bruce, KG6OJI
--
Richard Knoppow
dickburk@...
WB6KBL
|
Re: non-profit engineering
For those of you that have had enough, look at the bottom of your email. There's a link that says "Mute This Topic". Click the link and follow the instructions.?
This hen-party should go offline.
================================================================================
On 4/12/2020 12:27 PM, Tam Hanna wrote:
Hello,
Sorry to take this even more off topic: Mahler is an electrical
engineer??? I mean, OK, he bedded a woman 25 years his younger,
which is quite common with engineers who pick up Game as a side
hustle.
Now I really worry about our profession. This is a little known
fact: the Syrian government did a study of religious and political
extremists. The results were shocking: I expected psychoanalysts,
students of gender, philosophers and other "talk scientists" to
take the lead. But it actually was electrical engineers taking the
lead...
And nope, I am too much of an Alcoholic to even consider Islamism.
I would fight FOR beer, not against it.
Tam
With best regards
Tam HANNA (emailing on a BlackBerry PRIV)
Enjoy electronics? Join 14k other followers by visiting the Crazy
Electronics Lab at
Am 12. April 2020 19:16:30 MESZ schrieb
Carsten Bormann <cabocabo@...>:
On 2020-04-12, at 14:31, Chuck Harris <cfharris@...> wrote:
So, Germany has changed to allow its people to wander
the streets wearing swastika’s?
Of course not. We’re not idiots.
But you don’t get "in jail for 10 years" for “saying something”.
Seriously bad actors like (*) do get in trouble, though. Don’t operate like him.
I’m sorry I have to bring this up again, but the kind of malicious misinformation that started this side conversation cannot stand.
Grü?e, Carsten
(*) I actually worked with the guy during one of his lucid phases, at the time when he did some work for the customer for a board/firmware design I was involved with. Incredibly brilliant guy. His renewed downturn is a sad, sad story. But of course off-topic here.
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Mute This Topic: /mt/72936034/102401
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Unsubscribe: /g/HP-Agilent-Keysight-equipment/leave/defanged [tamhan@...]
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Hello,
if any measurements are needed, let me know. I have the unit on
hand.
Tam
With best regards
Tam HANNA
Enjoy electronics? Join 15k7 other followers by visiting the Crazy Electronics Lab at
On 2020. 04. 12. 23:54, Don Bitters via
groups.io wrote:
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FYI,
The 4195A manuals are available, but not from Artek Media.
?The Service and Maintenance manuals (pdf) are at Carleton
University, CA - resolution seems to be very good. ?The
Operating manual (pdf) is available at Keysight, and does have
some programming in the back of the manual. ?I have also seen
3.5 in. disks labeled 4195A, so there are some out there.
4195A?
Service Man.
Maintenance Man.
Operating Man.
Don Bitters
|
FYI, The 4195A manuals are available, but not from Artek Media. ?The Service and Maintenance manuals (pdf) are at Carleton University, CA - resolution seems to be very good. ?The Operating manual (pdf) is available at Keysight, and does have some programming in the back of the manual. ?I have also seen 3.5 in. disks labeled 4195A, so there are some out there.
4195A?
Service Man.
Maintenance Man.
Operating Man.
Don Bitters
|
Re: Bill West keytop puller
I can't remember ever pulling key tops from Bill West keyboards. In practically all cases, it's just dirt, mostly on the leaf springs that causes both the snappy clicking and the sometimes less than perfect contact: The small longitudinal movement of the middle of the spring is impeded against the plastic parts, making smooth movement impossible. I have found the easiest, best and lasting remedy to be a good rinse with, or preferably, *in* IPA (Isopropyl alcohol, Isopropanol). Make sure all touching surfaces are exercised against each other while cleaning. Wherever possible, I just dip complete PCB's with keyswitches in the IPA bath. No need to remove key mechanisms nor keytops.
If you want to lube afterwards, make sure to use a lube that doesn't become sticky with time or attacks the plastic.
Raymond
|
HP 8920A spectrum analyser amplitude calibration
Hi all,
I have an 8920A and the spectrum analyser amplitude level is 3dB out. I have read enough to understand that calibrating this is a bit of a secret. Does anyone know it please?
Similarly for calibrating the power meter.
I have asked the same question on the 8924-series group.
Kind regards
Colin Smithers G4CWH
|
What is the safest way to pull the keytops of a Bill West keyboard? I have a 3325A and 8131A with sticky keys I want to fix...
- Maurice
|
Re: Are HP3325 A and B version parts interchangeable?
I had a problem with Board A14 in my 3325A and got a board from an 3325B - and it looks like it works fine. Still cleaning up the keyboard stuff, but it didn't complain.
|
Good day,
I replaced the CRT in my 8753B with a Newscope LCD kit last week. This
makes available an HP S1349A CRT display module. It's in decent shape,
could probably use adjustment.
Anyone have a need for this beastie? If so, make me an offer. I'll wait
a week or so to hear back before I snip the CRT seal and send the whole
thing to recycle.
Thanks much!
--
---
Bruce Lane, ARS KC7GR
kyrrin (at) bluefeathertech dot com
"Quando Omni Flunkus Moritati" (Red Green)
|
Hello all,
Paul is correct. I am in Reedsburg, WI.
GOD Bless and Sorry,
rich!
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Show quoted text
On 4/12/2020 9:09 AM, Paul Bicknell wrote: Location location
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Richard R.
Pope
Sent: 12 April 2020 05:19
To: [email protected]
Subject: [HP-Agilent-Keysight-equipment] FS: HP 16700A LA!
Hello all,
I hit a deer in WY with my brand new car. They are probably going
to total it. My GAP insurance will pay off the loan but I am probably
going to be left on foot. I am getting out of working on electronics. I
have a HP 16700A LA and 16700B expansion unit for sale. There are 5
16555D cards in the 16700A. The interconnect cable for the the 16700B is
here. There are five pairs of cables for the 16555Ds. There are
terminators for the cables and clips. The HDD in the 16700A has been
upgraded to a Seagate ST 318417N and there is an external HDD and case
connected to the system for extra storage. There is also a SCSI CD-Rom
drive and a floppy drive installed in the 16700A. The latest OS has also
been installed.
It will take two very large boxes and a smaller box to packaged it
up for shipping. So shipping will be expensive. Local pick up is
welcome. It operates and all of the cards are good. I will guarantee no
DOA. Please make me a fair offer and help me out with this. I will take
Paypal F&F, Money Order, Cashiers Check, Personal Check but it will be
held until the check clears.
GOD Bless and Thanks,
rich!
-----
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2016.0.8048 / Virus Database: 4793/15886 - Release Date: 08/14/18
Internal Virus Database is out of date.
|
Re: non-profit engineering
This hen-party should go offline.
================================================================================
On 4/12/2020 12:27 PM, Tam Hanna wrote:
toggle quoted message
Show quoted text
Hello,
Sorry to take this even more off topic: Mahler is an electrical
engineer??? I mean, OK, he bedded a woman 25 years his younger,
which is quite common with engineers who pick up Game as a side
hustle.
Now I really worry about our profession. This is a little known
fact: the Syrian government did a study of religious and political
extremists. The results were shocking: I expected psychoanalysts,
students of gender, philosophers and other "talk scientists" to
take the lead. But it actually was electrical engineers taking the
lead...
And nope, I am too much of an Alcoholic to even consider Islamism.
I would fight FOR beer, not against it.
Tam
With best regards
Tam HANNA (emailing on a BlackBerry PRIV)
Enjoy electronics? Join 14k other followers by visiting the Crazy
Electronics Lab at
Am 12. April 2020 19:16:30 MESZ schrieb
Carsten Bormann <cabocabo@...>:
On 2020-04-12, at 14:31, Chuck Harris <cfharris@...> wrote:
So, Germany has changed to allow its people to wander
the streets wearing swastika’s?
Of course not. We’re not idiots.
But you don’t get "in jail for 10 years" for “saying something”.
Seriously bad actors like (*) do get in trouble, though. Don’t operate like him.
I’m sorry I have to bring this up again, but the kind of malicious misinformation that started this side conversation cannot stand.
Grü?e, Carsten
(*) I actually worked with the guy during one of his lucid phases, at the time when he did some work for the customer for a board/firmware design I was involved with. Incredibly brilliant guy. His renewed downturn is a sad, sad story. But of course off-topic here.
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#104847): /g/HP-Agilent-Keysight-equipment/message/104847
Mute This Topic: /mt/72936034/102401
Group Owner: [email protected]
Unsubscribe: /g/HP-Agilent-Keysight-equipment/leave/defanged [tamhan@...]
|
Re: non-profit engineering
Second that - please take your off topic crap off this list.??
On Sun, Apr 12, 2020 at 1:29 PM Gedas < w8bya@...> wrote:
CAN YOU GUYS PLEASE TAKE THIS
OFF LINE !? REALLY, ENOUGH.
Gedas, W8BYA EN70JT
Gallery at
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 4/12/2020 1:27 PM, Tam Hanna wrote:
Hello,
Sorry to take this even more off topic: Mahler is an electrical
engineer??? I mean, OK, he bedded a woman 25 years his younger,
which is quite common with engineers who pick up Game as a side
hustle.
Now I really worry about our profession. This is a little known
fact: the Syrian government did a study of religious and political
extremists. The results were shocking: I expected psychoanalysts,
students of gender, philosophers and other "talk scientists" to
take the lead. But it actually was electrical engineers taking the
lead...
And nope, I am too much of an Alcoholic to even consider Islamism.
I would fight FOR beer, not against it.
Tam
With best regards
Tam HANNA (emailing on a BlackBerry PRIV)
Enjoy electronics? Join 14k other followers by visiting the Crazy
Electronics Lab at
Am 12. April 2020 19:16:30 MESZ schrieb
Carsten Bormann <cabocabo@...>:
On 2020-04-12, at 14:31, Chuck Harris <cfharris@...> wrote:
So, Germany has changed to allow its people to wander
the streets wearing swastika’s?
Of course not. We’re not idiots.
But you don’t get "in jail for 10 years" for “saying something”.
Seriously bad actors like (*) do get in trouble, though. Don’t operate like him.
I’m sorry I have to bring this up again, but the kind of malicious misinformation that started this side conversation cannot stand.
Grü?e, Carsten
(*) I actually worked with the guy during one of his lucid phases, at the time when he did some work for the customer for a board/firmware design I was involved with. Incredibly brilliant guy. His renewed downturn is a sad, sad story. But of course off-topic here.
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#104847): /g/HP-Agilent-Keysight-equipment/message/104847
Mute This Topic: /mt/72936034/102401
Group Owner: [email protected]
Unsubscribe: /g/HP-Agilent-Keysight-equipment/leave/defanged [tamhan@...]
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Re: non-profit engineering
CAN YOU GUYS PLEASE TAKE THIS
OFF LINE !? REALLY, ENOUGH.
Gedas, W8BYA EN70JT
Gallery at
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 4/12/2020 1:27 PM, Tam Hanna wrote:
toggle quoted message
Show quoted text
Hello,
Sorry to take this even more off topic: Mahler is an electrical
engineer??? I mean, OK, he bedded a woman 25 years his younger,
which is quite common with engineers who pick up Game as a side
hustle.
Now I really worry about our profession. This is a little known
fact: the Syrian government did a study of religious and political
extremists. The results were shocking: I expected psychoanalysts,
students of gender, philosophers and other "talk scientists" to
take the lead. But it actually was electrical engineers taking the
lead...
And nope, I am too much of an Alcoholic to even consider Islamism.
I would fight FOR beer, not against it.
Tam
With best regards
Tam HANNA (emailing on a BlackBerry PRIV)
Enjoy electronics? Join 14k other followers by visiting the Crazy
Electronics Lab at
Am 12. April 2020 19:16:30 MESZ schrieb
Carsten Bormann <cabocabo@...>:
On 2020-04-12, at 14:31, Chuck Harris <cfharris@...> wrote:
So, Germany has changed to allow its people to wander
the streets wearing swastika’s?
Of course not. We’re not idiots.
But you don’t get "in jail for 10 years" for “saying something”.
Seriously bad actors like (*) do get in trouble, though. Don’t operate like him.
I’m sorry I have to bring this up again, but the kind of malicious misinformation that started this side conversation cannot stand.
Grü?e, Carsten
(*) I actually worked with the guy during one of his lucid phases, at the time when he did some work for the customer for a board/firmware design I was involved with. Incredibly brilliant guy. His renewed downturn is a sad, sad story. But of course off-topic here.
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#104847): /g/HP-Agilent-Keysight-equipment/message/104847
Mute This Topic: /mt/72936034/102401
Group Owner: [email protected]
Unsubscribe: /g/HP-Agilent-Keysight-equipment/leave/defanged [tamhan@...]
|
Re: non-profit engineering
Hello, Sorry to take this even more off topic: Mahler is an electrical engineer??? I mean, OK, he bedded a woman 25 years his younger, which is quite common with engineers who pick up Game as a side hustle. Now I really worry about our profession. This is a little known fact: the Syrian government did a study of religious and political extremists. The results were shocking: I expected psychoanalysts, students of gender, philosophers and other "talk scientists" to take the lead. But it actually was electrical engineers taking the lead... And nope, I am too much of an Alcoholic to even consider Islamism. I would fight FOR beer, not against it. Tam
With best regards Tam HANNA (emailing on a BlackBerry PRIV) Enjoy electronics? Join 14k other followers by visiting the Crazy Electronics Lab at Am 12. April 2020 19:16:30 MESZ schrieb Carsten Bormann <cabocabo@...>:
toggle quoted message
Show quoted text
On 2020-04-12, at 14:31, Chuck Harris <cfharris@...> wrote:
So, Germany has changed to allow its people to wander
the streets wearing swastika’s?
Of course not. We’re not idiots.
But you don’t get "in jail for 10 years" for “saying something”.
Seriously bad actors like (*) do get in trouble, though. Don’t operate like him.
I’m sorry I have to bring this up again, but the kind of malicious misinformation that started this side conversation cannot stand.
Grü?e, Carsten
(*) I actually worked with the guy during one of his lucid phases, at the time when he did some work for the customer for a board/firmware design I was involved with. Incredibly brilliant guy. His renewed downturn is a sad, sad story. But of course off-topic here.
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#104847): /g/HP-Agilent-Keysight-equipment/message/104847
Mute This Topic: /mt/72936034/102401
Group Owner: [email protected]
Unsubscribe: /g/HP-Agilent-Keysight-equipment/leave/defanged [tamhan@...]
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RFI-EMI-GUY
Maurice Smulders
Bruce Lane