Re: 91% Isopropyl Rubbing Alcohol to clean potentiometers?
On Wed, Mar 6, 2019 at 01:48 PM, Bill Carns wrote:
IPA make a great paint remover
I this context IPA = isopropyl alcohol (just so I am on the same page.) My claim is that if you, very broadly separate, finishes into "modern" and "classic", IPA probably only dissolves "classic finishes." The reason I am saying this is because those "classic" finishes: paints, shellacs, and lacquers: they were based on the naturals secretions and saps of insects and trees. Whereas, "modern" finishes are based on synthetic materials. Very generally, many "classic" finishes will be affected by IPA: for instance, natural shellacs; because alcohol (methanol et. al.) is used to dissolve the secretion, to make liquid shellac. More "modern" synthetic finishes, are much more resistant to IPA. (90% IPA is often used to wipe down surfaces, and objects, to kill bacteria.) I'm interested in hearing about IPA dissolving paint. I haven't been able to duplicate that. Regards.
|
Re: 2465B fan replacements?
Hello all, anyone have the exact or best DigiKey or Mouser part number to replace the fans,
I opened the fan hub and oiled, they are better but still noise and one is not reliably starting.
I recall the forum had a good SKU.
Many thanks
Jon
|
Re: 91% Isopropyl Rubbing Alcohol to clean potentiometers?
On Wed, Mar 6, 2019 at 05:03 PM, Brad Thompson wrote:
Having experienced a chemically-induced anaphylactic-shock
Very sorry to read you experienced that. (I have a friend who has a peanut allergy... which is very seriously life threatening.) I think that is why it is always advisable to know, as much as one can, about what one is using; and, how it effects one, and the environment. The MSDS, for a pure chemical, is a good start. It's harder for proprietary chemical products. Sometimes, important ingredients are not listed, on a MSDDS, because that is not required if they are proprietary.
|
Re: 465 timebase switch fingers not soldered completely?
I took the cover off for access to cleaning the cam fingers with IPA.
|
Re: 465 timebase switch fingers not soldered completely?
I would say that this is how it's supposed to be - Tektronix don't make mistakes like that. Having said that, without looking into one of my 46x scopes with the trigger board removed, I can't be sure. Did you take off the cover that goes over the cam assembly, or has someone else left it off?
Colin.
toggle quoted message
Show quoted text
-----Original Message----- From: [email protected] [mailto: [email protected]] On Behalf Of bbortnick@... Sent: 07 March 2019 17:50 To: [email protected]Subject: [TekScopes] 465 timebase switch fingers not soldered completely? Hi all, Now working on the cranky timebase rotary switch. After pulling out the timing board (not hard; skip step 2.c - remove 3 wire cable - as it's redundant with step 3 which removes the other end of the cable from the A TRIG HOLDOFF pot.) Found the inner knob was off by 2 notches, so could not turn into x-y mode. Easy adjustment with the knob's grub screws. However I see that a number of the fingers appear to not be soldered properly to the top of the board (see linked photo). /g/TekScopes/album?id=86374Should I re-solder all of these? Thanks for the help!
|
Re: 465 timebase switch fingers not soldered completely?
oops, meant pulling the trigger board out. Left the timing board in place.
|
465 timebase switch fingers not soldered completely?
Hi all, Now working on the cranky timebase rotary switch. After pulling out the timing board (not hard; skip step 2.c - remove 3 wire cable - as it's redundant with step 3 which removes the other end of the cable from the A TRIG HOLDOFF pot.) Found the inner knob was off by 2 notches, so could not turn into x-y mode. Easy adjustment with the knob's grub screws. However I see that a number of the fingers appear to not be soldered properly to the top of the board (see linked photo). /g/TekScopes/album?id=86374Should I re-solder all of these? Thanks for the help!
|
I use T-Bird too and very happy with it, and as I write it's just popped up saying there's an update. For those on G-mail this article is about chrome extensions for it :
For those on limited data, use mailwasher to preview emails in plaintext to see if you're interested and if not delete them on the server.
Geoff.
toggle quoted message
Show quoted text
On 07/03/2019 17:04, fiftythreebuick wrote: Mark, I totally agree with you. I like a real email client way way better than any webmail interface. As you said, your email disappears when the connection to the webmail server is lost.
I use Thunderbird and I've been totally happy with it for quite a long time. It handles all of the diverse email accounts that I have with no problem and is quite configurable.
Different strokes for different folks.... :-)
Tom
Mark Wendt wrote:
2:51am #155077
On 3/6/19 21:43, Kyle Rhodes wrote:
Agreed Dave. I was surprised to see so many people still use Thunderbird, Eudora, and the like, complaining of attachments, etc.
I¡¯ve been on Gmail since it was launched and I¡¯ve never looked back. It also automagically threads conversations so there aren¡¯t any concerns of who said what with the various complaints I see of people not quoting replies properly....
My $0.02 ¡ª everyone should at least try it.
Thunderbird will also thread conversations as this one was threaded. It's not because of the email reader that complaints from the attachments arose. The problem is the same whether an email reader or the webmail portal is used. The attachments are downloaded whether or not you use an email client or the web portal. For folks with limited data plans that's what causes the problems. I'm on a limited data plan as are a number of others. I may not be interested in a topic, yet I still have to download those images which I have no desire to see. The same would happen if I viewed my email in the web portal.
Upload the images to our groups.io pictures section and the I have the choice of whether I want to view those photos or not.
I've tried the web portal and dislike it. It's not available if I lose my connection, which can happen quite often in this northern rural area when storms and snow hit us. With the email client I store and save all the emails locally so they are available even if I'm offline.
|
Mark, I totally agree with you. I like a real email client way way better than any webmail interface. As you said, your email disappears when the connection to the webmail server is lost.
I use Thunderbird and I've been totally happy with it for quite a long time. It handles all of the diverse email accounts that I have with no problem and is quite configurable.
Different strokes for different folks.... :-)
Tom
Mark Wendt wrote:
2:51am #155077
toggle quoted message
Show quoted text
On 3/6/19 21:43, Kyle Rhodes wrote:
Agreed Dave. I was surprised to see so many people still use Thunderbird, Eudora, and the like, complaining of attachments, etc.
I¡¯ve been on Gmail since it was launched and I¡¯ve never looked back. It also automagically threads conversations so there aren¡¯t any concerns of who said what with the various complaints I see of people not quoting replies properly....
My $0.02 ¡ª everyone should at least try it.
Thunderbird will also thread conversations as this one was threaded. It's not because of the email reader that complaints from the attachments arose. The problem is the same whether an email reader or the webmail portal is used. The attachments are downloaded whether or not you use an email client or the web portal. For folks with limited data plans that's what causes the problems. I'm on a limited data plan as are a number of others. I may not be interested in a topic, yet I still have to download those images which I have no desire to see. The same would happen if I viewed my email in the web portal.
Upload the images to our groups.io pictures section and the I have the choice of whether I want to view those photos or not.
I've tried the web portal and dislike it. It's not available if I lose my connection, which can happen quite often in this northern rural area when storms and snow hit us. With the email client I store and save all the emails locally so they are available even if I'm offline.
|
I had two 7104 mainframes I
saved from the scrap dealer.
Kept one when I moved.
It took a while to get all 4
Plug-Ins (including the one
with Variable Delay), but I
found them.
The mainframe is a piece of
artwork. I can only imagine the
amount of training and expertise
it took to fab those. I keep it
only because I can't bear to part
with it. Been a while since I used
it last.
73, Dick, W1KSZ
toggle quoted message
Show quoted text
On Thu, Mar 7, 2019 at 9:33 AM Fred S. <fred@...> wrote: Hi Albert,
are you trying to bring my depression back?
--
Best regards,
Fred S.
|
This has been my deskside 'scope for the last 5 years or so. I'm only
selling it as I got seduced by an extra 150MHz bandwidth!
Collection from Kenilworth, UK
David
|
FS: 7854 with Waveform Calculator and 7B87 in UK
Restored to working order by yours truly. No, I haven't done the full
calibration as it takes a *long* time!
Make me a sensible offer and it is yours!
David
|
Hi Albert,
are you trying to bring my depression back?
--
Best regards,
Fred S.
|
At 08:26 AM 3/7/2019, Dave wrote: Also I have years worth of history across multiple emails that are can all be catalogued and stored by topic rather than email address. One stop going back 10+ years. Same here but mine is close to 20 years. I have the client on both the desktop and the laptop and synchronize them, so I have those emails, and access to download new emails, whenever and wherever I am. That also gives me field access to over a terabyte of files that I may need in the field for vocation or avocation. Dale H. Cook, GR/HP/Tek Collector, Roanoke/Lynchburg, VA
|
Re: 91% Isopropyl Rubbing Alcohol to clean potentiometers?
Metal can, or plastic bottle?
-Chuck Harris
Dennis Tillman W7PF wrote:
toggle quoted message
Show quoted text
Hi Wilson,
Ace Hardware, a US Hardware Store Franchise, and TrueValue Hardware Stores (another US Franchise) sell 99% IPA by the gallon for $20. I have not found it cheaper anywhere, and you can't beat the convenience of getting it anytime you want it at the local hardware store.
Dennis Tillman W7PF
-----Original Message-----
From: Bill Carns
Sent: Tuesday, March 05, 2019 5:28 PM
If you go to a pharmacy and talk with the Pharmacist, they can give you IPA
with a higher percent IPA and less water. This is better for pots, but be
careful to not saturate. Sometimes you can damage the carbon resistance
layer that is laid down for the wiper to run on. I am not sure if that is
true for the ones TEK uses.
Bill
-----Original Message-----
From: wilson2115@...
Sent: Tuesday, March 05, 2019 7:13 PM
I have some 91% Isopropyl Rubbing Alcohol sitting around and I have a Tek 577
with dirty horizontal and vertical display controls, I have used this to
clean residue on circuit boards and grime off surfaces and it works quite
well so I was wondering if it could be used to clean the dirty potentiometers
on the 577 curve tracer. 91% seems the best the best I can find. I also have
a can CRC Lectra Clean. What are your thoughts, recommendations? Thanks
|
Exactly
As Dale says we have multiple accounts (personal + Business) and frankly and using the group web interface directly takes MUCH more time. Also I have years worth of history across multiple emails that are can all be catalogued and stored by topic rather than email address
One stop going back 10+ years.
Dave
toggle quoted message
Show quoted text
On 3/7/2019 8:10 AM, Dale H. Cook wrote: At 09:43 PM 3/6/2019, Kyle Rhodes wrote:
I was surprised to see so many people still use Thunderbird, Eudora, and the like, complaining of attachments, etc. For some people webmail is not a viable option because of the number of accounts that they have to handle from several email servers. If I had to do webmail for all of my accounts and servers that would occupy far too much time. I also need local storage for some of those accounts.
As for attachments, that is another matter entirely, unrelated to webmail vs. a client.
Dale H. Cook, GR/HP/Tek Collector, Roanoke/Lynchburg, VA
--
Dave
Manuals@...
www.ArtekManuals.com
|
At 09:43 PM 3/6/2019, Kyle Rhodes wrote: I was surprised to see so many people still use Thunderbird, Eudora, and the like, complaining of attachments, etc. For some people webmail is not a viable option because of the number of accounts that they have to handle from several email servers. If I had to do webmail for all of my accounts and servers that would occupy far too much time. I also need local storage for some of those accounts. As for attachments, that is another matter entirely, unrelated to webmail vs. a client. Dale H. Cook, GR/HP/Tek Collector, Roanoke/Lynchburg, VA
|
The list admin has asked us not to discuss the issue while he looks at the solution. Unfortunately, there are lot of myths here that may have been true in 1998 but no longer are, and they form the basis of a persistent argument that, by 2019, is now just wrong. I¡¯ve been on Gmail since it was launched and I¡¯ve never looked back. It also automagically threads conversations so there aren¡¯t any concerns of who said what with the various complaints I see of people not quoting replies properly¡.
This confuses gmail the mail service with gmail the interactive mail access tool. Gmail the mail service is very good apart from privacy concerns. There are few privacy concerns with open lists like this, so gmail is just great for a tekscope subscription. You can use gmail the interactive mail access tool with this, or use a separate mail reader program. By now, both offer offline mail access capabilities. The attachments are downloaded whether or not you use an email client or the web portal. This is simply not true. There are a number of ways you can control what is downloaded. groups.io has a control that you can set for a specific mailing list: Go to /g/TekScopes/editsubOpen ¡°Advanced Preferences¡±. Configure ¡°Max Attachment Size¡±. Mail readers usually also have a control for whether the attachments that are offered are downloaded automatically or manually. The way to do this differs between mail readers, usually a couple of clicks or so. (Apple Mail: CMD-comma, Accounts, (select account), Account Information, Download Attachments.) For folks with limited data plans that's what causes the problems. I'm on a limited data plan as are a number of others. I may not be interested in a topic, yet I still have to download those images which I have no desire to see. As I said, this is not factual. Upload the images to our groups.io pictures section and the I have the choice of whether I want to view those photos or not. For images that make good named reference galleries: Please do. For the odd picture that accompanies a ¡°does this look right¡± message, this is not the right way to do this; you cause the accretion of hard to find information. Mail already supports attachments. The link between the attachments and the message does not get lost. I¡¯ve tried the web portal and dislike it. That is your right (I happen to hate ¡°Web Forum¡± style interfaces, too). It¡¯s not available if I lose my connection, Not true, as indicated above. which can happen quite often in this northern rural area when storms and snow hit us. Definitely true in many parts of the world, in particular those that actually have enough space to keep Tek Scopes around :-) With the email client I store and save all the emails locally so they are available even if I¡¯m offline. Exactly, and that also applies, optionally (automatically or manually), to the attachments. I¡¯m sorry for not quite following your policy, Dennis. This will be the one message correcting the outdated information for this week. Everyone: please don¡¯t discuss this further until Dennis has found out more about this (which I hope this message facilitates). Gr¨¹?e, Carsten
|
Hi Dave,
Here's a link -- let me know if it doesn't work for you:
Thanks,
Kyle
--
KSR Amps / Rhodes Amplification, LLC
Kyle Rhodes
(513) 480-2677
kyle@...
toggle quoted message
Show quoted text
On Thu, Mar 7, 2019 at 6:55 AM David Kuhn <Daveyk021@...> wrote: " It also has a Chrome extension called Gmail Offline that
works like a stand-alone client in that it will queue email compositions
and sync send/receive tasks once online."
Hey Kyle,
I've been looking for that extension and can not find it. Any details on
how to get it? It sounds like a great idea.
Dave
On Thu, Mar 7, 2019 at 6:25 AM Kyle Rhodes <ksrhodes@...> wrote:
Hi Adrian,
Right -- Gmail, aka Google mail. It's web based, so one doesn't need a
stand-alone client.
For those who have connection issues (slow / intermittent) there are two
additional options -- it allows for a simplified view that works better for
slow connections. It also has a Chrome extension called Gmail Offline that
works like a stand-alone client in that it will queue email compositions
and sync send/receive tasks once online. I personally use this when I'm
traveling abroad and have limited internet access.
It will not work with an old email address, so one must migrate that, which
is perhaps what you're primarily asking about? In my case, I simply
forward old email accounts to my Gmail address, and and I can easily
auto-label emails sent to these other accounts, and even reply as if I'm
replying from these accounts. I also have several domain email addresses
aliased to my Gmail for my businesses.
In the background, Gmail has quite a sophisticated number of settings and
it works very well -- for me anyway.
Thanks,
Kyle
--
KSR Amps / Rhodes Amplification, LLC
Kyle Rhodes
(513) 480-2677
kyle@...
On Thu, Mar 7, 2019 at 6:14 AM Adrian <Adrian@...> wrote:
Hi Kyle, is the 'Gmail' you are refer to the Google email service?
If so, I didn't think it's offers a stand-alone email client like
Thunderbird, Eudora etc so no use for anyone who needs a client for
their own email or am I missing something here?
Adrian
On 3/7/2019 2:43 AM, Kyle Rhodes wrote:
Agreed Dave. I was surprised to see so many people still use Thunderbird, Eudora, and the like, complaining of attachments, etc.
I¡¯ve been on Gmail since it was launched and I¡¯ve never looked back.
It
also automagically threads conversations so there aren¡¯t any concerns of
who said what with the various complaints I see of people not quoting
replies properly....
|
" It also has a Chrome extension called Gmail Offline that
works like a stand-alone client in that it will queue email compositions
and sync send/receive tasks once online."
Hey Kyle,
I've been looking for that extension and can not find it. Any details on
how to get it? It sounds like a great idea.
Dave
toggle quoted message
Show quoted text
On Thu, Mar 7, 2019 at 6:25 AM Kyle Rhodes <ksrhodes@...> wrote: Hi Adrian,
Right -- Gmail, aka Google mail. It's web based, so one doesn't need a
stand-alone client.
For those who have connection issues (slow / intermittent) there are two
additional options -- it allows for a simplified view that works better for
slow connections. It also has a Chrome extension called Gmail Offline that
works like a stand-alone client in that it will queue email compositions
and sync send/receive tasks once online. I personally use this when I'm
traveling abroad and have limited internet access.
It will not work with an old email address, so one must migrate that, which
is perhaps what you're primarily asking about? In my case, I simply
forward old email accounts to my Gmail address, and and I can easily
auto-label emails sent to these other accounts, and even reply as if I'm
replying from these accounts. I also have several domain email addresses
aliased to my Gmail for my businesses.
In the background, Gmail has quite a sophisticated number of settings and
it works very well -- for me anyway.
Thanks,
Kyle
--
KSR Amps / Rhodes Amplification, LLC
Kyle Rhodes
(513) 480-2677
kyle@...
On Thu, Mar 7, 2019 at 6:14 AM Adrian <Adrian@...> wrote:
Hi Kyle, is the 'Gmail' you are refer to the Google email service?
If so, I didn't think it's offers a stand-alone email client like
Thunderbird, Eudora etc so no use for anyone who needs a client for
their own email or am I missing something here?
Adrian
On 3/7/2019 2:43 AM, Kyle Rhodes wrote:
Agreed Dave. I was surprised to see so many people still use Thunderbird, Eudora, and the like, complaining of attachments, etc.
I¡¯ve been on Gmail since it was launched and I¡¯ve never looked back.
It
also automagically threads conversations so there aren¡¯t any concerns of
who said what with the various complaints I see of people not quoting
replies properly....
|
Jean-Paul
David C. Partridge
Fred S.
Dale H. Cook