Re: Copying 4145A floppy - a suggestion
On 6/3/21 10:04 PM, Larry McElhiney via groups.io wrote: " dd" doesn't care about disk formats.?
Same in my experience. ?I have copied DOS discs, UNIX disks, ATARI
discs, etc. ?It is is like doing a bit copy on a HD, ¡°1 or 0¡± ...except what is meant by "1" or "0" when you're encoding bits in different types of flux transmissions? Are you aware of, for example, FM, MFM, and GCR? If what you're saying were true, there would be no need for specialized software like Teledisk and ImageDisk. And the world has depended on those programs for decades for this reason. In short, you got lucky. -Dave -- Dave McGuire, AK4HZ New Kensington, PA
|
Re: Copying 4145A floppy - a suggestion
No.
Strictly speaking, you're correct, "dd" itself doesn't care about disk
formats. However, the underlying device driver does, and the floppy
disk controller chip underneath that does.
The Linux fdd driver assumes a certain sector size, number of sectors
per track, number of tracks per cylinder, and number of cylinders per
disk. In the era in which the 4145A was designed, there were no
industry standards for those parameters for 5.25" disks.
Unless it is one of the standard "PC" formats, no, it will not work.
Save yourself a headache and trust me on this; I work with dozens of
different disk formats all the time in my work with the museum. I have
been on this road up, down, and sideways, and have a full section of my
lab dedicated to media recovery from various types of disks and tapes.
-Dave
toggle quoted message
Show quoted text
On 6/3/21 9:58 PM, Bob Stewart wrote: "dd" doesn't care about disk formats.? It reads records sequentially and
it writes records sequentially.? Unless they've put deliberate bad
sectors on the disk, dd should work.
Bob
On Thursday, June 3, 2021, 8:47:04 PM CDT, Dave McGuire
<mcguire@...> wrote:
On 6/3/21 9:12 PM, Bob Stewart wrote:
"The "A" version uses a 5.25" diskette drive. The boot diskette is hard
sector
with a weird format that I've not been able to copy."
I've renamed this to hopefully avoid threadjacking.
If you have access to Linux, have you tried using "dd" to make an image,
and then using dd put the image on a new disk? ? There's virtually no chance of this working.? This will only work if
the disk is written in one of the few disk formats that are standard on
PCs, which, as I understand it, the 4145A's is not.
? ? ? ? ? ? ? -Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
--
Dave McGuire, AK4HZ
New Kensington, PA
|
Re: Copying 4145A floppy - a suggestion
On Thu, Jun 3, 2021 at 09:58 PM, Bob Stewart wrote:
" dd" doesn't care about disk formats.?
Same in my experience. ?I have copied DOS discs, UNIX disks, ATARI discs, etc. ?It is is like doing a bit copy on a HD, ¡°1 or 0¡±
Larry
AC9OX
|
Re: Copying 4145A floppy - a suggestion
"dd" doesn't care about disk formats.? It reads records sequentially and it writes records sequentially.? Unless they've put deliberate bad sectors on the disk, dd should work.
On Thursday, June 3, 2021, 8:47:04 PM CDT, Dave McGuire <mcguire@...> wrote:
On 6/3/21 9:12 PM, Bob Stewart wrote:
> "The "A" version uses a 5.25" diskette drive. The boot diskette is hard
> sector
> with a weird format that I've not been able to copy."
>
> I've renamed this to hopefully avoid threadjacking.
>
> If you have access to Linux, have you tried using "dd" to make an image,
> and then using dd put the image on a new disk?
? There's virtually no chance of this working.? This will only work if
the disk is written in one of the few disk formats that are standard on
PCs, which, as I understand it, the 4145A's is not.
? ? ? ? ? ? ? -Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
|
Re: Copying 4145A floppy - a suggestion
On 6/3/21 9:12 PM, Bob Stewart wrote: "The "A" version uses a 5.25" diskette drive. The boot diskette is hard
sector
with a weird format that I've not been able to copy."
I've renamed this to hopefully avoid threadjacking.
If you have access to Linux, have you tried using "dd" to make an image,
and then using dd put the image on a new disk? There's virtually no chance of this working. This will only work if the disk is written in one of the few disk formats that are standard on PCs, which, as I understand it, the 4145A's is not. -Dave -- Dave McGuire, AK4HZ New Kensington, PA
|
Re: Difference between 4145A and B units
On 6/3/21 8:54 PM, Lyle Bickley wrote: In what ways is the 4145B an upgrade from the 4145A? The B seems to sell
for quite a bit more money. But, a quick look at the manual
specifications seems to indicate they have similar capabilities. I
understand the floppy drive was changed? Anything else? Are there
digital upgrades to the B unit? The "A" version uses a 5.25" diskette drive. The boot diskette is hard sector
with a weird format that I've not been able to copy.
The original, working, HP-labeled boot disk in my 4145A is *not* hard-sectored. -Dave -- Dave McGuire, AK4HZ New Kensington, PA
|
Re: Copying 4145A floppy - a suggestion
On Thu, Jun 3, 2021 at 09:12 PM, Bob Stewart wrote:
?
If you have access to Linux, have you tried using "dd" to make an image, and then using dd put the image on a new disk?
In my experience (from UNIX on), the dd command will copy anything except master diskettes which have a laser-shot hole in the medium for copy protection. ?Also slower (smaller chunks) seems more reliable. Larry AC9OX
|
Copying 4145A floppy - a suggestion
"The "A" version uses a 5.25" diskette drive. The boot diskette is hard sector with a weird format that I've not been able to copy."
I've renamed this to hopefully avoid threadjacking.
If you have access to Linux, have you tried using "dd" to make an image, and then using dd put the image on a new disk?
Bob
On Thursday, June 3, 2021, 7:56:04 PM CDT, Lyle Bickley <lbickley@...> wrote:
On Thu, 03 Jun 2021 17:36:07 -0700 "Matt Huszagh" < huszaghmatt@...> wrote: > Hello, > > In what ways is the 4145B an upgrade from the 4145A? The B seems to sell > for quite a bit more money. But, a quick look at the manual > specifications seems to indicate they have similar capabilities. I > understand the floppy drive was changed? Anything else? Are there > digital upgrades to the B unit? The "A" version uses a 5.25" diskette drive. The boot diskette is hard sector with a weird format that I've not been able to copy. The "B" version uses a standard 3.5" soft sector diskette. It has a weird format - but it's capable of being copied or created from a file by Dunfield's "Imagedisk". Other than the FDD, the "A" and "B" 4145's are virtually identical. > Is the contents of the boot diskette different on the B vs the A? I've > been able to find copies of the B version, but nothing for the A yet. The contents (files), other than versioning, are nearly identical. Cheers, Lyle -- 73? NM6Y Bickley Consulting West "Black holes are where God is dividing by zero"
|
Re: Difference between 4145A and B units
On Thu, 03 Jun 2021 17:36:07 -0700 "Matt Huszagh" <huszaghmatt@...> wrote: Hello,
In what ways is the 4145B an upgrade from the 4145A? The B seems to sell
for quite a bit more money. But, a quick look at the manual
specifications seems to indicate they have similar capabilities. I
understand the floppy drive was changed? Anything else? Are there
digital upgrades to the B unit? The "A" version uses a 5.25" diskette drive. The boot diskette is hard sector with a weird format that I've not been able to copy. The "B" version uses a standard 3.5" soft sector diskette. It has a weird format - but it's capable of being copied or created from a file by Dunfield's "Imagedisk". Other than the FDD, the "A" and "B" 4145's are virtually identical. Is the contents of the boot diskette different on the B vs the A? I've
been able to find copies of the B version, but nothing for the A yet. The contents (files), other than versioning, are nearly identical. Cheers, Lyle -- 73 NM6Y Bickley Consulting West "Black holes are where God is dividing by zero"
|
Hi Wayne,
I'd be really interested to know the process for the A unit if you've written something up. This seems like a great solution.
Thanks!
Matt
|
Difference between 4145A and B units
Hello,
In what ways is the 4145B an upgrade from the 4145A? The B seems to sell
for quite a bit more money. But, a quick look at the manual
specifications seems to indicate they have similar capabilities. I
understand the floppy drive was changed? Anything else? Are there
digital upgrades to the B unit?
Is the contents of the boot diskette different on the B vs the A? I've
been able to find copies of the B version, but nothing for the A yet.
Thanks
Matt
|
Re: HP PN 1855-0418 Part Identification Help
Hello,
and my ass awaits email at
tamhan (aeht) tamoggemon (roundthing) com.
Incidentially, it looks like my private health insurance company
FINALLY is able to get me lined up for a SinoPharm or Sputnik
shot. Then I can freely travel across Central Europe again, which
means the Vienna address opens up again for collecting things.
ATTENTION: deliveries to Vienna run via my family's office. We
are not on good terms, so a) a fee will be levied against me and
b) packet loss is possible at a chance of like 1%. So please, try
to find another address in Austria if at all possible and only
send SMALL things as I usually have to haul them to Slovakia to
post.
Tam
With best regards
Tam HANNA
Enjoy electronics? Join 19k7 other followers by visiting the Crazy Electronics Lab at
On 2021. 06. 03. 22:41, Bernardo Santos
wrote:
toggle quoted message
Show quoted text
Tam,?
Thank you very much for your kind offer, I will let you
know if I need something, that's very kind of you to offer.
Joarez,
Can you share your e-mail?so I can contact you directly?
I'm not sourcing these fets from Multcomercial, but I am
afraid that the guy might be selling the same parts with a
premium price. Do you have any experience with these? Are
these fake?
On Thu, Jun 3, 2021 at 5:15 PM
joarez siczkoriz via <jsiczkoriz= [email protected]>
wrote:
Hi ,
After several repairs in the line of HP instruments, mainly in HP8903 units, I recommend that the SF83025 be used, compared to the 2N3958 if they are bought in Brazil, mainly in Multicomercial, I'm sorry to say that I'll throw your money in the Trash
Thanks a lot
Joarez Siczkoriz
Em quinta-feira, 3 de junho de 2021 12:05:58 BRT,
Tam Hanna < tamhan@...>
escreveu:
Hello,
I can always order a FET for you with my next
Mouser order, and stuff it in an untracked
letter.
Tam
- - - - -
With best regards
Tam HANNA
Enjoy electronics? Join 13500 followers by visiting the Crazy Electronics Lab at
On 03.06.21 03:18, Bernardo Santos wrote:
Frank,
Thanks, I could buy those but the truth is
that in my country we have to pay more than
100% taxes. One single FET would cost more
than a whole minimum wage of salary around
here. So I try to avoid importing as much as
possible, but it is a possibility if I
don't?find a more widely available part. Thank
you for pointing me to that ad.
Vladan,
That's really valuable info. Where did you
get that from? I've been googling for days and
found nothing. I have been looking at a NS
2N3958 datasheet and am wondering if that
would do the job. Gfs is at least double the
minimum you listed, and Ciss is typically
around 3.5pF, but the rest seems ok.
Considering these are select parts, what
exactly?did HP select them for? I'm asking
because you seem to have much more
information?than I ever managed to find after
many days on google.?
This is a
selected part, which means that something
similar was widely available, but I can't give
you any commercial part numbers. Here is what
I have:
National Semiconductor SF83025 or Intersil
ITS31087. These are custom numbers, don't
bother looking for them in old catalogs.
However, see if you can find something similar
to the specs below in NS and Intersil books.:
BVgss 40V min
IDss?? 0.5mA min, 5mA max.
Gfs? 0.5mS min.
Vp/Vgs (threshold)? 0.5V min, 4V max
Ciss? 2pF
Vgs match? 10mV
300mW max
These are almost certainly made with two die
per package.
Vladan
--
--
|
I'm in the process of thinning my "stuff" collection. I have a number of CRTs
I would like to find a home for. Some are Tex, some HP, and some just generic
CRTs. I got these many years ago from a service shop closing down, so I don't
know the exact condition of any of them. Although my notes below indicate some
appear to be new.
I'm located in Southern New Hampshire, and they are free to the first person
arriving to pick them up.
Here are my notes on the CRTs:
1 Tek Tube markings: 5BGP2, 1-42764, 5-9, P-8660; epoxied base
Box: 154-0175-00 T5430-2 (incorrect markings for tube)
round 513, 531, 535 (retrofit to 535A)
4 Tek Tube Markings: 154-0659-10, 49-3, 65458, 520, N38
This has a 6x10 grid, with an 8x8 grid overlaid. It also
has vertical markings for 0% to 100%.
Box: 154-0659-10 14-8 Apr 10 78
rect 7623, R7623 (early B010100-B010144, later?)
7 Tek Tube Markings: 154-0513-00, 24-5, 7353, 517-P-90
This has what appears to be a vectorscope *grid* on the screen.
Slight burn in the center.
Box: 154-0513-00 Dec 10 1990
round 520, 520A, R520, R520A
8 Tek Tube Markings: 154-0098-00, T0540-2, 33-6, 50555, 206 P2
Box: 154-0081-88 T0510-2 (incorrect markings for tube)
rect 541, 545, R541, R545
9 Tek Tube Markings: 36-0, 54F2, 54-69996, scratched screen
This was double boxed, with the inner box having the
markings: 51P2-154081
round 513, 531, 535, R531, R535 (retrofit to 535A?)
12 Amperex Tube Markings: D14-251GM
Philips Yoke: 2 wire (yellow/yellow) yoke
Box: D15-251GM/A
rect
13 HP Tube Markings: 5083-5861 serial number 422168
Box: Tek 154-0613-00 44-9 4815 (tube appears to be used)
rect
14 United Tube Markings: 5AQP31A 7416
Box: United E.T.C. 5AQP31A
round
- Mark
|
Re: HP PN 1855-0418 Part Identification Help
Joarez, I'll drop you an email, I don't wanna bother you during holidays on whatsapp haha...
On Thu, Jun 3, 2021 at 5:47 PM joarez siczkoriz via <jsiczkoriz= [email protected]> wrote:
I've had problems with these Fets on an HP8569 unit they didn't have the specified features
Below my email and whatsapp Joarez Siczkoriz
(11)92002 0894
Em quinta-feira, 3 de junho de 2021 17:42:14 BRT, Bernardo Santos < bernardobhz@...> escreveu:
Tam,?
Thank you very much for your kind offer, I will let you know if I need something, that's very kind of you to offer.
Joarez,
Can you share your e-mail?so I can contact you directly? I'm not sourcing these fets from Multcomercial, but I am afraid that the guy might be selling the same parts with a premium price. Do you have any experience with these? Are these fake? On Thu, Jun 3, 2021 at 5:15 PM joarez siczkoriz via <jsiczkoriz= [email protected]> wrote:
Hi ,
After several repairs in the line of HP instruments, mainly in HP8903 units, I recommend that the SF83025 be used, compared to the 2N3958 if they are bought in Brazil, mainly in Multicomercial, I'm sorry to say that I'll throw your money in the Trash
Thanks a lot
Joarez Siczkoriz
Em quinta-feira, 3 de junho de 2021 12:05:58 BRT, Tam Hanna < tamhan@...> escreveu:
Hello,
I can always order a FET for you with my next Mouser order, and
stuff it in an untracked letter.
Tam
- - - - -
With best regards
Tam HANNA
Enjoy electronics? Join 13500 followers by visiting the Crazy Electronics Lab at
On 03.06.21 03:18, Bernardo Santos
wrote:
Frank,
Thanks, I could buy those but the truth is that in my
country we have to pay more than 100% taxes. One single FET
would cost more than a whole minimum wage of salary around
here. So I try to avoid importing as much as possible, but it
is a possibility if I don't?find a more widely available part.
Thank you for pointing me to that ad.
Vladan,
That's really valuable info. Where did you get that from?
I've been googling for days and found nothing. I have been
looking at a NS 2N3958 datasheet and am wondering if that
would do the job. Gfs is at least double the minimum you
listed, and Ciss is typically around 3.5pF, but the rest seems
ok. Considering these are select parts, what exactly?did HP
select them for? I'm asking because you seem to have much more
information?than I ever managed to find after many days on
google.?
This
is a selected part, which means that something similar was
widely available, but I can't give you any commercial part
numbers. Here is what I have:
National Semiconductor SF83025 or Intersil ITS31087. These are
custom numbers, don't bother looking for them in old catalogs.
However, see if you can find something similar to the specs
below in NS and Intersil books.:
BVgss 40V min
IDss?? 0.5mA min, 5mA max.
Gfs? 0.5mS min.
Vp/Vgs (threshold)? 0.5V min, 4V max
Ciss? 2pF
Vgs match? 10mV
300mW max
These are almost certainly made with two die per package.
Vladan
--
--
|
Re: HP PN 1855-0418 Part Identification Help
I've had problems with these Fets on an HP8569 unit they didn't have the specified features
Below my email and whatsapp Joarez Siczkoriz
(11)92002 0894
jsiczkoriz@...
Em quinta-feira, 3 de junho de 2021 17:42:14 BRT, Bernardo Santos <bernardobhz@...> escreveu:
Tam,?
Thank you very much for your kind offer, I will let you know if I need something, that's very kind of you to offer.
Joarez,
Can you share your e-mail?so I can contact you directly? I'm not sourcing these fets from Multcomercial, but I am afraid that the guy might be selling the same parts with a premium price. Do you have any experience with these? Are these fake?
On Thu, Jun 3, 2021 at 5:15 PM joarez siczkoriz via <jsiczkoriz= [email protected]> wrote:
Hi ,
After several repairs in the line of HP instruments, mainly in HP8903 units, I recommend that the SF83025 be used, compared to the 2N3958 if they are bought in Brazil, mainly in Multicomercial, I'm sorry to say that I'll throw your money in the Trash
Thanks a lot
Joarez Siczkoriz
Em quinta-feira, 3 de junho de 2021 12:05:58 BRT, Tam Hanna < tamhan@...> escreveu:
Hello,
I can always order a FET for you with my next Mouser order, and
stuff it in an untracked letter.
Tam
- - - - -
With best regards
Tam HANNA
Enjoy electronics? Join 13500 followers by visiting the Crazy Electronics Lab at
On 03.06.21 03:18, Bernardo Santos
wrote:
Frank,
Thanks, I could buy those but the truth is that in my
country we have to pay more than 100% taxes. One single FET
would cost more than a whole minimum wage of salary around
here. So I try to avoid importing as much as possible, but it
is a possibility if I don't?find a more widely available part.
Thank you for pointing me to that ad.
Vladan,
That's really valuable info. Where did you get that from?
I've been googling for days and found nothing. I have been
looking at a NS 2N3958 datasheet and am wondering if that
would do the job. Gfs is at least double the minimum you
listed, and Ciss is typically around 3.5pF, but the rest seems
ok. Considering these are select parts, what exactly?did HP
select them for? I'm asking because you seem to have much more
information?than I ever managed to find after many days on
google.?
This
is a selected part, which means that something similar was
widely available, but I can't give you any commercial part
numbers. Here is what I have:
National Semiconductor SF83025 or Intersil ITS31087. These are
custom numbers, don't bother looking for them in old catalogs.
However, see if you can find something similar to the specs
below in NS and Intersil books.:
BVgss 40V min
IDss?? 0.5mA min, 5mA max.
Gfs? 0.5mS min.
Vp/Vgs (threshold)? 0.5V min, 4V max
Ciss? 2pF
Vgs match? 10mV
300mW max
These are almost certainly made with two die per package.
Vladan
--
|
Re: HP PN 1855-0418 Part Identification Help
Tam,?
Thank you very much for your kind offer, I will let you know if I need something, that's very kind of you to offer.
Joarez,
Can you share your e-mail?so I can contact you directly? I'm not sourcing these fets from Multcomercial, but I am afraid that the guy might be selling the same parts with a premium price. Do you have any experience with these? Are these fake?
On Thu, Jun 3, 2021 at 5:15 PM joarez siczkoriz via <jsiczkoriz= [email protected]> wrote:
Hi ,
After several repairs in the line of HP instruments, mainly in HP8903 units, I recommend that the SF83025 be used, compared to the 2N3958 if they are bought in Brazil, mainly in Multicomercial, I'm sorry to say that I'll throw your money in the Trash
Thanks a lot
Joarez Siczkoriz
Em quinta-feira, 3 de junho de 2021 12:05:58 BRT, Tam Hanna < tamhan@...> escreveu:
Hello,
I can always order a FET for you with my next Mouser order, and
stuff it in an untracked letter.
Tam
- - - - -
With best regards
Tam HANNA
Enjoy electronics? Join 13500 followers by visiting the Crazy Electronics Lab at
On 03.06.21 03:18, Bernardo Santos
wrote:
Frank,
Thanks, I could buy those but the truth is that in my
country we have to pay more than 100% taxes. One single FET
would cost more than a whole minimum wage of salary around
here. So I try to avoid importing as much as possible, but it
is a possibility if I don't?find a more widely available part.
Thank you for pointing me to that ad.
Vladan,
That's really valuable info. Where did you get that from?
I've been googling for days and found nothing. I have been
looking at a NS 2N3958 datasheet and am wondering if that
would do the job. Gfs is at least double the minimum you
listed, and Ciss is typically around 3.5pF, but the rest seems
ok. Considering these are select parts, what exactly?did HP
select them for? I'm asking because you seem to have much more
information?than I ever managed to find after many days on
google.?
This
is a selected part, which means that something similar was
widely available, but I can't give you any commercial part
numbers. Here is what I have:
National Semiconductor SF83025 or Intersil ITS31087. These are
custom numbers, don't bother looking for them in old catalogs.
However, see if you can find something similar to the specs
below in NS and Intersil books.:
BVgss 40V min
IDss?? 0.5mA min, 5mA max.
Gfs? 0.5mS min.
Vp/Vgs (threshold)? 0.5V min, 4V max
Ciss? 2pF
Vgs match? 10mV
300mW max
These are almost certainly made with two die per package.
Vladan
--
|
Re: How to fix broken HP key
Imagine that some of us don't have perfect memory, and although we have read the entire thread, its details were softened as the thread dribbled in over several days (weeks?). Me personally, I read the posts as they come into my email, and if one interests me, and I think I have something to contribute, I reply to the post/email. I really have no interest in treating this as seriously as one might a vocation. Also, when posters cannot be bothered to quote what they are responding to, it makes it very hard to keep track of the earlier details. I suppose if this drift really bothers you *that* much, you could start your own group, and moderate the heck out of it, so drift can never occur... -Chuck Harris On Thu, 03 Jun 2021 11:52:55 -0700 "Robert G8RPI via groups.io" <robert8rpi@...> wrote: Why don't people read the thread and answer the question.
The OP does NOT have the usual missing leaf spring issue. His issue
is that the gold plated finger contact that contacts the PCB is
missing. This cannot be cut from a fealer gauge or 3D printed.
Robert G8RPI
|
Re: HP PN 1855-0418 Part Identification Help
Hi ,
After several repairs in the line of HP instruments, mainly in HP8903 units, I recommend that the SF83025 be used, compared to the 2N3958 if they are bought in Brazil, mainly in Multicomercial, I'm sorry to say that I'll throw your money in the Trash
Thanks a lot
Joarez Siczkoriz
Em quinta-feira, 3 de junho de 2021 12:05:58 BRT, Tam Hanna <tamhan@...> escreveu:
Hello,
I can always order a FET for you with my next Mouser order, and
stuff it in an untracked letter.
Tam
- - - - -
With best regards
Tam HANNA
Enjoy electronics? Join 13500 followers by visiting the Crazy Electronics Lab at
On 03.06.21 03:18, Bernardo Santos
wrote:
Frank,
Thanks, I could buy those but the truth is that in my
country we have to pay more than 100% taxes. One single FET
would cost more than a whole minimum wage of salary around
here. So I try to avoid importing as much as possible, but it
is a possibility if I don't?find a more widely available part.
Thank you for pointing me to that ad.
Vladan,
That's really valuable info. Where did you get that from?
I've been googling for days and found nothing. I have been
looking at a NS 2N3958 datasheet and am wondering if that
would do the job. Gfs is at least double the minimum you
listed, and Ciss is typically around 3.5pF, but the rest seems
ok. Considering these are select parts, what exactly?did HP
select them for? I'm asking because you seem to have much more
information?than I ever managed to find after many days on
google.?
This
is a selected part, which means that something similar was
widely available, but I can't give you any commercial part
numbers. Here is what I have:
National Semiconductor SF83025 or Intersil ITS31087. These are
custom numbers, don't bother looking for them in old catalogs.
However, see if you can find something similar to the specs
below in NS and Intersil books.:
BVgss 40V min
IDss?? 0.5mA min, 5mA max.
Gfs? 0.5mS min.
Vp/Vgs (threshold)? 0.5V min, 4V max
Ciss? 2pF
Vgs match? 10mV
300mW max
These are almost certainly made with two die per package.
Vladan
--
|
Re: How to fix broken HP key
Hi Robert,
Yes true, but having established that and suggested frisking the box
for the missing contact, the thread drifted a bit into repairing the
busted plastic frame pictured - which may well be how the contact
escaped in the first place? - and there was then some question about
3D printing it then the spring came up and someone wanted the
dimensions and so it goes, all fair and good questions and sort of
related to the OP?
I've often wondered how to better manage the issue of thread drift
other than in retrospect and never really come up with a solution
but of course adding this sentence to my reply is thread drift.....!
Adrian
On 03/06/2021 19:52, Robert G8RPI via
groups.io wrote:
toggle quoted message
Show quoted text
Why don't people read the thread and answer the question.
The OP does NOT have the usual missing leaf spring issue. His
issue is that the gold plated finger contact that contacts the PCB
is missing.
This cannot be cut from a fealer gauge or 3D printed.
Robert G8RPI
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Re: How to fix broken HP key
Why don't people read the thread and answer the question.
The OP does NOT have the usual missing leaf spring issue. His issue is that the gold plated finger contact that contacts the PCB is missing.
This cannot be cut from a fealer gauge or 3D printed.
Robert G8RPI
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Dave McGuire
Larry McElhiney
Lyle Bickley