Re: Message from your fearless (foolish?) leader
Hello Dennis,
Good luck to your wife, and I hope your cooking skills improve fast enough to avoid disaster.
Once in a while I get email bounce messages from tekscopes.io, that sound like what you are getting.
I just go to the web site and fix it as instructed. It happens maybe twice a year.
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On 3/15/2021 7:33 PM, Dennis Tillman W7pF wrote: Last Tuesday afternoon, Mar 9, for some unexplained reason Groups.io began
sending me messages that emails addressed to me from the groups.io groups I
belong to were bouncing.
That came in to my InBox about the time I was getting my wife, Marian, ready
for a hip replacement surgery early the following morning.
I didn't have a minute to myself from just before those notices started to
appear from Groups.io until Saturday morning to look at my email.
A few hours later on Tuesday Groups.io notified me that they were suspending
all email to me until I told them it was OK to resume sending it again. They
never explained why it was bouncing but on Saturday when I told them it was
OK to start sending it again they did. It was as if there was never a
problem in the first place. I still have no idea why this happened.
More importantly, I have no idea if I missed anything important. If I didn't
then I'm quite happy you all behaved yourselves :) :) :) in my enforced
absence.
Update on Marian: The hip replacement was a complete success. This is an
amazing operation with patients walking again without assistance (except for
a cane for a while) in a few weeks. At one point in the operation a surgical
robot is used (a first as far as I'm concerned). Almost a week after the
operation she is walking slowly with the aid of a walker. The biggest issue
at this point is pain from the incision and difficulty sleeping for very
long. Most of the pain meds make her dizzy, give her indigestion, cause her
constipation, and generally disagree with her so she has few choices to deal
with the pain. The pain makes it difficult for her to sleep.
Marian will remain home recuperating for the next 10 days. During that time
I have to do all the things she used to do for us. I had no idea how much
that involved. I'm exhausted most of the day while I take care of her needs;
do all the food shopping she used to do; walk, feed, and entertain our 5
Golden Retrievers, and try to cope with over 100 emails each day.
I appreciate, in advance, your concern for Marian and I apologize for not
responding to you get well wishes although I will pass them along as soon as
I get a chance to check in on TekScopes.
Dennis Tillman W7pF
Your fearless (foolish?) leader
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Re: Message from your fearless (foolish?) leader
Best wishes for your wife's speedy recovery.
Thanks again for all you do for the TEK community!
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Re: Corrosion Damage ¨C TM500 Plugins
A couple of questions and comments.
I see you have indicated that there is a foam product present in the container. Can you better describe the appearance of it to help define what it is? Yes, there are foam products releasing agents that can cause deleterious effects on metals and such.
What type of container are the plug-ins housed in? You mention that the container is ¡°¡almost fully sealed¡¡±. One must remember that through ambient temperature changes air tends to expand and contract. This allows any container that is not totally sealed to ¡°breathe¡± and allow any external humidity inside.
Is the foam being held in place by any adhesives? I once encountered a waterproof transit case that had standard low density foam fastened inside with an adhesive. Over time the contents of the case showed signs of deterioration similar to what you are experiencing. It turned out that the adhesive was releasing a product that caused the problem. And since the container was totally sealed from any environmental effects the inside of the case was a perfect chamber to contain the corrosive atmosphere.
Do you live in an area that has a relatively humid environment? While working in the tropics I came upon an older piece of HP equipment that was supposedly in ¡°safe¡± storage but the room was not dehumidified. When I picked it up there was heard rattling inside. Opening it up I found that all of the discrete transistors had lost their gold plating (gold was frequently used I those days to plate leads) and the moisture had attacked the steel wire thereby corroding it to the point where there was no metal left and the transistors simply fell off the printed circuit boards. Obviously there were also signs of corrosion on other parts as well including ¡°worm tracks¡± on the anodized front panel where the moisture went under the sealed anodic oxide surface and made very fine random tracks on the raw aluminum as it made its way along.
Greg
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Re: Message from your fearless (foolish?) leader
Best wishes, fingers thoroughly crossed!
-ls-
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<>
David
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-----Original Message----- From: [email protected] < [email protected]> On Behalf Of David C. Partridge Sent: 16 March 2021 10:01 To: [email protected]Subject: Re: [TekScopes] Broke my TDS3000B Thanks John I'd got about as far as David Jones did in identifying what the chips did. I'll post a screen shot on the EEVBLOG thread I created as the fault in this case is different, and is common to all channels. David
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Re: Corrosion Damage ¨C TM500 Plugins
I was told that the foam would break down and release flourine and that
that was what attacked the gold and even stainless steel. I've opened up
dozens of HP TE accessory boxs that have been closed for many years and
found everything in the box in this conditon. But whatever it was that
attacked the metal was a gas and not a liquid and it attacked all of the
metal surfaces, even those not in contact with the foam. OTOH as
stevenhorii pointed out gold itself is pretty porous and the agent might
not have attacked the gold directly but simply penetrated the gold and
attacked the metal underneath and caused the gold to crumble off. I used to
see that a lot in battery powered devices like the HP calculators that had
gold plated steel battery contacts when the batteries had been left in them
too long and had leaked electrolyte. I will bet that you can go on Ebay and
search for "HP calculator" and find pictures of some in that condition. The
electrolyte would also attack the gold plated copper that was used in what
was called the "port block" in the HP 41s. It was common to open up HP41s
and find the gold plating in little tiny loose flakes and no copper left on
the Kaptan strip that formed the battery contacts and the four port
connectors.
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On Tue, Mar 16, 2021 at 7:33 AM Dave Daniel <kc0wjn@...> wrote: I am surprised that gold was affected. I thought gold did not react
chemically so I looked it up. It is pretty inert except for reacting with
cyanide.
Perhaps one of the chemists on this list could weigh in.
DaveD
On Mar 15, 2021, at 23:07, - <rrrr6789@...> wrote:
The old black anti-static foam was notorious for breaking down and
emitting some kind of gas that would attack ANY nearby metal, even gold or
nickel plating. It's common to find test equipment accessories, from HP
and others, in the original boxes and the outside of all of the metal items
is badly corroded.
On Mon, Mar 15, 2021 at 10:25 PM <christopherbath@...> wrote:
I have some TM-500 plugins that have been stored for a number of years in
the garage in what I thought was a safe plastic storage container that
is
almost fully sealed from the atmosphere. To my horror when opening the
box
on the weekend all plugins have suffered some amount of corrosion
damage.
Examples of the damage include hardware items such as screws rusting,
aluminium oxidisation and plastic (typically inner cables) showing
chemical
deposits on the outer surfaces. A couple of the plugins were fully
wrapped
in bubble wrap and have also suffered damage.
I had wondered if moisture had got inside the container which is
possible
given that a small amount of air would be able to get insider the
container
around the opening however given the nature of the damage this does not
seem to add up.
My suspicion is that the foam inside the container has emitted some sort
of chemical that has caused the corrosion possibly Methylene Chloride
which
is apparently used in the production of polyurethane foams. Would this
make
sense or is something else the likely cause of the issue?
|
Re: Message from your fearless (foolish?) leader
...And best wishees to Marian also from Italy!
Giuliano
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Re: Message from your fearless (foolish?) leader
Dennis,
Please forward the best wishes to your wife for a qick recovery and less pain from far away as Germany!
I think it is a new and important experience for many of us to learn what kind of effort it takes to run a family household. In my case this would include to care for four humans, two horses and - most important - two cats!
Keep up the good work Dennis!
Regards, Joe
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Re: Message from your fearless (foolish?) leader
Best wishes! I'm sure your wife will be up and running in no time!
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On Tue, Mar 16, 2021 at 2:33 AM Dennis Tillman W7pF <dennis@...> wrote:
Last Tuesday afternoon, Mar 9, for some unexplained reason Groups.io began
sending me messages that emails addressed to me from the groups.io groups I
belong to were bouncing.
That came in to my InBox about the time I was getting my wife, Marian, ready
for a hip replacement surgery early the following morning.
I didn't have a minute to myself from just before those notices started to
appear from Groups.io until Saturday morning to look at my email.
A few hours later on Tuesday Groups.io notified me that they were suspending
all email to me until I told them it was OK to resume sending it again. They
never explained why it was bouncing but on Saturday when I told them it was
OK to start sending it again they did. It was as if there was never a
problem in the first place. I still have no idea why this happened.
More importantly, I have no idea if I missed anything important. If I didn't
then I'm quite happy you all behaved yourselves :) :) :) in my enforced
absence.
Update on Marian: The hip replacement was a complete success. This is an
amazing operation with patients walking again without assistance (except for
a cane for a while) in a few weeks. At one point in the operation a surgical
robot is used (a first as far as I'm concerned). Almost a week after the
operation she is walking slowly with the aid of a walker. The biggest issue
at this point is pain from the incision and difficulty sleeping for very
long. Most of the pain meds make her dizzy, give her indigestion, cause her
constipation, and generally disagree with her so she has few choices to deal
with the pain. The pain makes it difficult for her to sleep.
Marian will remain home recuperating for the next 10 days. During that time
I have to do all the things she used to do for us. I had no idea how much
that involved. I'm exhausted most of the day while I take care of her needs;
do all the food shopping she used to do; walk, feed, and entertain our 5
Golden Retrievers, and try to cope with over 100 emails each day.
I appreciate, in advance, your concern for Marian and I apologize for not
responding to you get well wishes although I will pass them along as soon as
I get a chance to check in on TekScopes.
Dennis Tillman W7pF
Your fearless (foolish?) leader
|
Re: Corrosion Damage ¨C TM500 Plugins
Two things I can think of. One is something deposited on the gold, not an
actual reaction. The second is something I have seen with gold plating. I
have seen this with gold over nickel. If conditions result in any
condensation on the plated item, micro (or macro) pores could allow for
some electrolytic degradation of the metal under the gold. This causes the
gold plating to "bubble" up and split. The gold itself does not react since
it is usually less active on the electrolytic scale but it does damage the
plating mechanically.
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On Tue, Mar 16, 2021, 07:33 Dave Daniel <kc0wjn@...> wrote: I am surprised that gold was affected. I thought gold did not react
chemically so I looked it up. It is pretty inert except for reacting with
cyanide.
Perhaps one of the chemists on this list could weigh in.
DaveD
On Mar 15, 2021, at 23:07, - <rrrr6789@...> wrote:
The old black anti-static foam was notorious for breaking down and
emitting some kind of gas that would attack ANY nearby metal, even gold or
nickel plating. It's common to find test equipment accessories, from HP
and others, in the original boxes and the outside of all of the metal items
is badly corroded.
On Mon, Mar 15, 2021 at 10:25 PM <christopherbath@...> wrote:
I have some TM-500 plugins that have been stored for a number of years in
the garage in what I thought was a safe plastic storage container that
is
almost fully sealed from the atmosphere. To my horror when opening the
box
on the weekend all plugins have suffered some amount of corrosion
damage.
Examples of the damage include hardware items such as screws rusting,
aluminium oxidisation and plastic (typically inner cables) showing
chemical
deposits on the outer surfaces. A couple of the plugins were fully
wrapped
in bubble wrap and have also suffered damage.
I had wondered if moisture had got inside the container which is
possible
given that a small amount of air would be able to get insider the
container
around the opening however given the nature of the damage this does not
seem to add up.
My suspicion is that the foam inside the container has emitted some sort
of chemical that has caused the corrosion possibly Methylene Chloride
which
is apparently used in the production of polyurethane foams. Would this
make
sense or is something else the likely cause of the issue?
|
Re: Corrosion Damage ¨C TM500 Plugins
I am surprised that gold was affected. I thought gold did not react chemically so I looked it up. It is pretty inert except for reacting with cyanide.
Perhaps one of the chemists on this list could weigh in.
DaveD
toggle quoted message
Show quoted text
On Mar 15, 2021, at 23:07, - <rrrr6789@...> wrote:
The old black anti-static foam was notorious for breaking down and
emitting some kind of gas that would attack ANY nearby metal, even gold or
nickel plating. It's common to find test equipment accessories, from HP
and others, in the original boxes and the outside of all of the metal items
is badly corroded.
On Mon, Mar 15, 2021 at 10:25 PM <christopherbath@...> wrote:
I have some TM-500 plugins that have been stored for a number of years in
the garage in what I thought was a safe plastic storage container that is
almost fully sealed from the atmosphere. To my horror when opening the box
on the weekend all plugins have suffered some amount of corrosion damage.
Examples of the damage include hardware items such as screws rusting,
aluminium oxidisation and plastic (typically inner cables) showing chemical
deposits on the outer surfaces. A couple of the plugins were fully wrapped
in bubble wrap and have also suffered damage.
I had wondered if moisture had got inside the container which is possible
given that a small amount of air would be able to get insider the container
around the opening however given the nature of the damage this does not
seem to add up.
My suspicion is that the foam inside the container has emitted some sort
of chemical that has caused the corrosion possibly Methylene Chloride which
is apparently used in the production of polyurethane foams. Would this make
sense or is something else the likely cause of the issue?
|
Re: Message from your fearless (foolish?) leader
A close friend of mine of almost 40 years (60 year old retired fireman) from my gym was in terrible excruciating hip pain for many years and walked with a terrible limp. He had both hips replaced at the same time last year the week before Christmas. He was back in the gym with a cane the week after New Years pain free and working out lightly. We were all amazed. A week later - he came with a cane but didn't use it much. By the end of January, no cane but with a slight limp and worked out normally. By the end of February, couldn't detect any limp. Today, he does squats with 225lb for 12-15 reps, and rides the bike for hours. It was a miracle! He opted for the surgical technique that didn't involve cutting through the muscle so his recovery was very quick.
No one should fear hip surgery - it's the easiest surgical procedure to recover from - so I was told by a retired orthopedic surgeon friend whom I work out with.
John Justin
|
Thanks John
I'd got about as far as David Jones did in identifying what the chips did.
I'll post a screen shot on the EEVBLOG thread I created as the fault in this case is different, and is common to all channels.
David
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-----Original Message----- From: [email protected] < [email protected]> On Behalf Of John Gord via groups.io Sent: 15 March 2021 21:29 To: [email protected]Subject: Re: [TekScopes] Broke my TDS3000B David, Take a look at the EEVBLOG two-part video at: Dave tries to fix a TDS3054 with a single bad channel that has problems at the same sample rate breakpoint you are seeing. (He never solves the problem, but his work and the comments may lead you to a better understanding of which chips do what.) --John Gord
|
I realize that I'm replying to an old post but, just for the record, I thought I had exactly the same issue and it turned out to be simply the fact that I had accidentally enabled storage mode (DISPLAY A and B LEDs both lit) or the 7L5 had powered up in that mode. Couldn't get time domain mode to trigger. Switching off storage (A and B LEDs off) solved the issue.
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Re: Message from your fearless (foolish?) leader
Hi Dennis,
First of all I'm glad that Marian had a successful operation and is recovering well. All the best wishes to you and your family from the other side of the Planet.
Regarding mail bouncing, one thing is strange. You say Groups.io relayed messages were bouncing, yet you received an error notice mail from that same Groups.io. When mails bounce, the sender normally receives a mail notice with the exact error code and additional description. However in your case I the sender is a robot (Groups.io), so the only chance for more info is Groups.io's courtesy to provide it to you.
The only scenario I can think of is that your ISP temporarily had Groups.io on a spam list, because somebody on Groups.io violated the terms of use. ISPs are actually clusters of ISPs (the bigger providing services to the smaller), and they usually share some trust infrastructure. That infrastructure consists of certificate authorities (CAs) for S/MIME and other certificates, and also peripheral stuff like spam list filters. The renew of expired certificates can sometimes fail, and contamination of spam lists takes time to clear up.
Such issues normally get noticed and addressed by web administrators (webmasters). If you have time it may make sense to mail them and inquire about the issue.
Best regards,
Nenad Filipovic
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Re: Message from your fearless (foolish?) leader
Dennis,
Praying for Marian¡¯s fast and complete recovery.
--
Michael Lynch
Dardanelle, AR
|
Re: Message from your fearless (foolish?) leader
Dennis,
After my full knee surgery, I would take pain meds with food and home made remedy of honey ginger water (helps with nausea)
Best wishes to you and your wife.
Bob
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Re: Message from your fearless (foolish?) leader
Dennis:
I don't know your wife Marian (obviously), although after observing your
responses to others on the Tekscopes group, I can imagine that she is a
wonderful human being, and I will send prayers on her behalf.? But my
connection (obscure though it may be, through this users' group) to you
is such that I hope you can continue to attend to your personal/family
needs above any requirements associated with the Tekscopes group.? I
think your leadership and control has been fine over the years, and we
will do just fine.? I don't think there's been any need for you to worry
about us (on Tekscopes).
Try to take care of your SELF in the meantime.? It's difficult to
provide care for a family member who's been incapacitated (temporarily,
or otherwise), and? our best wishes (and prayers) go with you also.
Mike Dinolfo N4MWP
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On 3/15/21 9:33 PM, Dennis Tillman W7pF wrote: Last Tuesday afternoon, Mar 9, for some unexplained reason Groups.io began
sending me messages that emails addressed to me from the groups.io groups I
belong to were bouncing.
That came in to my InBox about the time I was getting my wife, Marian, ready
for a hip replacement surgery early the following morning.
I didn't have a minute to myself from just before those notices started to
appear from Groups.io until Saturday morning to look at my email.
A few hours later on Tuesday Groups.io notified me that they were suspending
all email to me until I told them it was OK to resume sending it again. They
never explained why it was bouncing but on Saturday when I told them it was
OK to start sending it again they did. It was as if there was never a
problem in the first place. I still have no idea why this happened.
More importantly, I have no idea if I missed anything important. If I didn't
then I'm quite happy you all behaved yourselves :) :) :) in my enforced
absence.
Update on Marian: The hip replacement was a complete success. This is an
amazing operation with patients walking again without assistance (except for
a cane for a while) in a few weeks. At one point in the operation a surgical
robot is used (a first as far as I'm concerned). Almost a week after the
operation she is walking slowly with the aid of a walker. The biggest issue
at this point is pain from the incision and difficulty sleeping for very
long. Most of the pain meds make her dizzy, give her indigestion, cause her
constipation, and generally disagree with her so she has few choices to deal
with the pain. The pain makes it difficult for her to sleep.
Marian will remain home recuperating for the next 10 days. During that time
I have to do all the things she used to do for us. I had no idea how much
that involved. I'm exhausted most of the day while I take care of her needs;
do all the food shopping she used to do; walk, feed, and entertain our 5
Golden Retrievers, and try to cope with over 100 emails each day.
I appreciate, in advance, your concern for Marian and I apologize for not
responding to you get well wishes although I will pass them along as soon as
I get a chance to check in on TekScopes.
Dennis Tillman W7pF
Your fearless (foolish?) leader
|
Re: Corrosion Damage ¨C TM500 Plugins
The old black anti-static foam was notorious for breaking down and
emitting some kind of gas that would attack ANY nearby metal, even gold or
nickel plating. It's common to find test equipment accessories, from HP
and others, in the original boxes and the outside of all of the metal items
is badly corroded.
toggle quoted message
Show quoted text
On Mon, Mar 15, 2021 at 10:25 PM <christopherbath@...> wrote: I have some TM-500 plugins that have been stored for a number of years in
the garage in what I thought was a safe plastic storage container that is
almost fully sealed from the atmosphere. To my horror when opening the box
on the weekend all plugins have suffered some amount of corrosion damage.
Examples of the damage include hardware items such as screws rusting,
aluminium oxidisation and plastic (typically inner cables) showing chemical
deposits on the outer surfaces. A couple of the plugins were fully wrapped
in bubble wrap and have also suffered damage.
I had wondered if moisture had got inside the container which is possible
given that a small amount of air would be able to get insider the container
around the opening however given the nature of the damage this does not
seem to add up.
My suspicion is that the foam inside the container has emitted some sort
of chemical that has caused the corrosion possibly Methylene Chloride which
is apparently used in the production of polyurethane foams. Would this make
sense or is something else the likely cause of the issue?
|
PM-Re: [TekScopes] Message from your fearless (foolish?) leader
Dennis-
we the children have been really good during your unknown forced absence, google has caused issues for me not giving me my messages with thunderbird...also a what??? why??? nothing on my end was changed..etc.... I guess they fix things till it breaks...like changing settings without telling me!. darned kids.....
All the best and a speedy recovery for Marian....it truly is amazing what medical science is able to do today.
being I have been taking care of my mom for the last year.? it is not easy, So, let the little things slide a bit and do as ya can...stay on top of the important things...like Marian the 5 pups!
¸é±ð²Ô¨¦±ð, K6FSB
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On 3/15/21 6:33 PM, Dennis Tillman W7pF wrote: Last Tuesday afternoon, Mar 9, for some unexplained reason Groups.io began
sending me messages that emails addressed to me from the groups.io groups I
belong to were bouncing.
That came in to my InBox about the time I was getting my wife, Marian, ready
for a hip replacement surgery early the following morning.
I didn't have a minute to myself from just before those notices started to
appear from Groups.io until Saturday morning to look at my email.
A few hours later on Tuesday Groups.io notified me that they were suspending
all email to me until I told them it was OK to resume sending it again. They
never explained why it was bouncing but on Saturday when I told them it was
OK to start sending it again they did. It was as if there was never a
problem in the first place. I still have no idea why this happened.
More importantly, I have no idea if I missed anything important. If I didn't
then I'm quite happy you all behaved yourselves :) :) :) in my enforced
absence.
Update on Marian: The hip replacement was a complete success. This is an
amazing operation with patients walking again without assistance (except for
a cane for a while) in a few weeks. At one point in the operation a surgical
robot is used (a first as far as I'm concerned). Almost a week after the
operation she is walking slowly with the aid of a walker. The biggest issue
at this point is pain from the incision and difficulty sleeping for very
long. Most of the pain meds make her dizzy, give her indigestion, cause her
constipation, and generally disagree with her so she has few choices to deal
with the pain. The pain makes it difficult for her to sleep.
Marian will remain home recuperating for the next 10 days. During that time
I have to do all the things she used to do for us. I had no idea how much
that involved. I'm exhausted most of the day while I take care of her needs;
do all the food shopping she used to do; walk, feed, and entertain our 5
Golden Retrievers, and try to cope with over 100 emails each day.
I appreciate, in advance, your concern for Marian and I apologize for not
responding to you get well wishes although I will pass them along as soon as
I get a chance to check in on TekScopes.
Dennis Tillman W7pF
Your fearless (foolish?) leader
|
radeng
David C. Partridge
Joe
Mlynch001
Mike Dinolfo