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Re: New to Tek 465B operation

 

These are decent probes, good bandwidth, reasonably priced and have the Tek readout pin. 10x only though:


Re: OT! OT! --- E-bay fee change -- OT! OT! Cross posted with HP group.

 

Dennis,

I agree with everything that you said. However I think that what people
truely object to are the *never-ending* price increases from E-bay. PLUS
all of the other charges (PayPal and Global Shipping for example) for
services that they force buyers and sellers to use. Personally, I've been a
buyer and a seller on Ebay since the first year that they started I've seen
their fees rise from a FLAT 2% to whatever the combined totals are today. I
quit sellling on Ebay about 5 years ago after I sold ONE item for $200 and
was charged slightly over $22 for Ebay and PayPal only and shipping not
included. But as you point out Ebay is a private company and isn't beholden
to it's buyer and sellers so they have decide if they want to use it or
not. However, as far as I'm concerned, E-bay is still the only serious
game in town if you want to sell something for a decent price. And it's
also usually the only place where most individuals can buy the specialized
test equipment or other items that we desire.

Overall; despite it's constant cost increase, I'm very pleased to have
seen the rise of Ebay. I've made a pile of money selling TE and other items
that I would never have been able to sell without them and I've also been
able buy books, TE and some other items that I would never been able to
find, or have been able to afford, from the old regular TE suppliers such
as Tucker Electronics.

On Fri, Apr 30, 2021 at 10:40 AM Dennis Tillman W7pF <dennis@...>
wrote:

Hi Daniel et al,
It always surprises me that people are so easily outraged by changes like
this one that eBay has in the works. eBay Inc. is a publically traded
company beholden to its stockholders, not to you or me. Their management
has to constantly balance the needs of their stockholders, sellers, and
buyers while insuring they don't violate the laws and customs of every
country they do business in. I don't envy them. Any change they make is
bound to anger some of their constituents.

We all have the ultimate power to determine if this was a good or bad
decision on their part by what we do next. It is simple: Stop using them if
you don't like this new policy.

I became a member 21 years ago, just 4 years after they started. In my
time as a member I can easily see how it evolved. I welcomed some things
they did, and I was dismayed by other things. I do not expect it to be the
same as it was back then and neither should you. I still find it extremely
useful, although not for what I was using it for back then.

As they evolve so do I. I have had to accommodate their ever changing
rules and requirements so I can continue to take advantage of the amazing
marketplace they have created for exchanging goods. In the 25 years since
they were founded near the East Bay in San Francisco they have
revolutionized buying and selling. I'm certain of one thing: eBay will
continue to evolve and stockholders, buyers, and sellers will continue to
complain about it until they vote with their feet.

It sounds like some of you feel entitled to be treated a certain way by
eBay and you are angry that you have made an incorrect assumption. Welcome
to the club. I was angry when I moved out on my own and my mom didn't come
over to my apartment to vacuum, do my laundry, and continue cooking for me.
Eventually I got over it, I hope you do too. eBay still has plenty to offer
if you know what to look for and how to find bargains.

I appreciate the members who are offering suggestions on how to
accommodate the latest change coming from eBay. The alternative,
complaining about the changes, doesn't help. eBay does care about you (in
the big sense) but they have hundreds of millions of stockholders, sellers,
and buyers to also care about. When you realize how insignificant you are
it might help you to understand that complaining is a waste of time. Your
choice is to evolve with eBay or vote with your feet by leaving.

Dennis Tillman W7pF

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of
Daniel Koller via groups.io
Sent: Tuesday, April 27, 2021 11:26 AM

<SNIPS>
Hi folks, this is OFF TOPIC because it's about e-bay, but on the other
hand, with the exception of my older gear, it's just about the only way I
get *any* Tek or HP gear these days. So, with apologies if it drags on too
long and in the wrong direction,....
I got a message from e-bay that explains they are changing their payment
structure. According to that, sellers will need to directly link a bank
account to e-bay so that they can receive payments directly from buyers.
By May 21, if you do not link a bank account to e-bay, they will not allow
new postings! So, the implication is that Paypal is no longer going to
work. I don't know about folks here, but I suspect, like me, they are a bit
older, financially conservative, and are loathe to link a personal bank
account to e-bay. To this day I do not have my paypal account "linked"
to my bank account. I can have all my on-line accounts hacked, but none
of them have any access to my bank account.




--
Dennis Tillman W7pF
TekScopes Moderator






Re: 465 Electrolytic Capacitor Replacement

 

Thanks for this. I'm still in the process of tooling up my workspace. This sort of input helps. There's a lot of sellers and a lot of cheap crap out there. A word of mouth promotion trumps a lot of sales pitch for me. I could easily break the bank trying to buy everything at once, so keeping cost down is a big deal. Looks like recapping power supplies is going to become a common activity on my bench! A robust extraction system is going to be very useful.

I've always loathed the plastic push-button type solder suckers. This looks like a nice setup. Clearly you're happy with it. I'll have to add it to the queue.

Dave

On Friday, April 30, 2021, 10:09:15 AM PDT, Torch <tekscopes@...> wrote:

I bought a vacuum pump desoldering station a few years ago. Works great -- doesn't overheat traces, gets rid of the solder, leaves an empty hole and a clean carpet:


Re: 465 Electrolytic Capacitor Replacement

 

I bought a vacuum pump desoldering station a few years ago. Works great -- doesn't overheat traces, gets rid of the solder, leaves an empty hole and a clean carpet:


Re: OT! OT! --- E-bay fee change -- OT! OT! Cross posted with HP group.

 

Hi Dennis,

I think there is quite some room for action inbetween "accepting" and "vote with your feet". Protests can have large effects and may be the only option when you actually do not have the choice to "vote with your feet".

Ebay does have a quasi monopole on online-auctions! Thats what put their actions in a different light as if they were in real competition with other companies. I wonder if their efforts to motivate vendors to use fixed prices does have to do with fears about anti-trust activities? It allows them to point to Amazon as competitor...

cheers
Martin


TDS220 bootup??

 

Got a TDS220. Does not get used much. It sat unused for at least a year. Cord plugged in, switched off (these have a hardware on/off sw on the AC line).

So, went to use it, turned on and I get orange lines on the screen. ????

Tried turning it on an off a few times and then it booted up and seemed to work OK.

The next time I tried it, same story with the orange lines. I eventually discovered a light slap on the scope would pop it out of the orange lines thing and it would boot and pass the self test and work normally.

If left on a while and turned off and then immediately back on right away, odds are it boots fine again. But let it set even a minute or so and then back to needing a shock.

I've had this scope for well over a decade and this only started in the past year or so.

What should I look at? After the obvious with bad connections someplace, could the xtal be "lazy" now for some reason and the oscillator on the main micro not starting?

thanks,


Re: OT! OT! --- E-bay fee change -- OT! OT! Cross posted with HP group.

 

Hi,

that's interesting - I long suspected that the various "editions" of eBay
are quite different under the hood. I wouldn't be surprised if their main
site (ebay.com) is much more well maintained and monitored compared to
their regional sites (ebay.de, ebay.fr etc.).

Here (Germany/Europe) paying with wire transfer is quite common and until
this change, you could choose to offer payment with e.g. Paypal and wire
transfer. For wire transfers, eBay would just give buyers the IBAN set in
the account settings to the buyer. So the buyer would literally just wire
the money directly to you. I understand this is unusual in the US, but wire
transfers are fast and free here, so it's not uncommon. Someone having the
account number, or IBAN, can't really do anything besides wiring you more
money, so it's not a security problem.

When paying with PayPal, the buyer would get your PayPal email as well (and
vice versa), so at that point nobody can really keep the two of you from
just sending each other emails with whatever.

Cheers, Marian

Am Mi., 28. Apr. 2021 um 01:03 Uhr schrieb - <rrrr6789@...>:

Marian,

I don't know what part of the world that you're in but I RARELY see any
problems on E-bay here in the US. I use both Mozilla and Palemoon.

I don't think that E-bay (US) has given out the buyer's information to
the sellers, or vice versa, in MANY years. They did very early on but I
think that stopped when they started using PayPal since they didn't want
the buyers and sellers to be able to contact each other and make deals
outside of Ebay/PP. I know that years ago I tried to send a buyer or a
seller, I don't recall which, my phone number through E-bay's message
system and E-bay would consistantly reject my message. I finally got around
it by putting the phone number into a JPG image and was able to send that
but I think that E-bay later figured that one out and even found a way to
block that. Many years ago when I was selling a lot of E-bay and I usually
shipped via FedEx and FedEx always wanted the receiver's phone number in
case there was a delivery problem. At the time, I could contact the buyer
through E-bay's message system and have send me their phone number the same
way. But as I said, that was a LONG time ago! Ebay is vastly different
now than when I first started using it and people would send each other
personal checks and even cash through the mail to pay for their purchases.
Someone in Germany once folded up some American dollar bills and put them
inside of a 3 1/2" floppy disk shell and mailed it to me. He didn't warn me
and I didn't know what it was for and almost threw it away when I received
it! Heck, my original buyer/seller name on E-bay WAS my complete E-mail
address! Times change!

On Tue, Apr 27, 2021 at 3:52 PM Marian B <public@...> wrote:

As I understand it, eBay will no longer provide your account information
to
the buyer at all. Instead the buyer pays eBay, which acts as an escrow,
and
will eventually pay you (or not). The number of payment options would
therefore be independent of the seller's choices.

Personally what irks me more about eBay is that the site is constantly
broken, has years old bugs like items not being added to the watchlist at
times, bids not registering, login loops, aggressive 2FA verification
over
and over again, doesn't properly work with Firefox, and has a rather
obscene 11 % tax on top. 10 % would be acceptable, if their site was
top-notch - but it's not, it's half-working garbage at the best of times.

Cheers, Marian

Am Di., 27. Apr. 2021 um 20:32 Uhr schrieb Daniel Koller via groups.io
<kaboomdk@...>:

Hi folks, this is OFF TOPIC because it's about e-bay, but on the other
hand, with the exception of my older gear, it's just about the only
way I
get *any* Tek or HP gear these days. So, with apologies if it drags on
too
long and in the wrong direction,....
I got a message from e-bay that explains they are changing their
payment
structure. According to that, sellers will need to directly link a
bank
account to e-bay so that they can receive payments directly from
buyers.
By May 21, if you do not link a bank account to e-bay, they will not
allow
new postings! So, the implication is that Paypal is no longer going
to
work.
I don't know about folks here, but I suspect, like me, they are a bit
older, financially conservative, and are loathe to link a personal bank
account to e-bay. To this day I do not have my paypal account
"linked"
to my bank account. I can have all my on-line accounts hacked, but
none
of them have any access to my bank account.
One thing I thought to do is open a small credit union account with
low/no fees and use that only for e-bay / paypal and keep the balance
low,
just in case something gets hacked. But now I have to go to the
bank,
or
perhaps open an account on-line. E-bay is NOT making it easier for
the
small seller. More and more e-bay is just becoming a venue for cheap
Chinese goods and wholesale garbage.
So, just wondering what folks here plan to do about selling their old
gear, and working with ebay in the future. Anyone have any good Ideas
or
workarounds to the e-bay problem, or an alternate e-venue for buying
and
selling old gear? E-bay has been a collector's and hobbyist's goldmine
for
20 years. It's sad to see it continually changing for the worse.
I am sensitive to the fact that this is a topic only tangentially
related to Tek or HP gear, so please keep replies relevant to how e-bay
is
a conduit for acquiring such gear for us. I'm happy to take replies
off-group as well, but if it's relevant, I presume we all want to hear
about it.
Thanks,
Dan














Re: Tektronix Probe Replacement Parts and Accessories

Dallas Smith
 

Thank you Dennis, will be very helpful ;-}


Re: Tektronix Probe Replacement Parts and Accessories

 

Dennis,?That is very handy, thank you for taking the time and for sharing!--EricSent from my Galaxy

-------- Original message --------From: Dennis Tillman W7pF <dennis@...> Date: 4/30/21 10:06 AM (GMT-06:00) To: [email protected] Subject: [TekScopes] Tektronix Probe Replacement Parts and Accessories I assembled together a PDF for the Probe Replacement Parts and Accessoriesfor most of the Tek Probes.It has pictures and part numbers for all the parts and accessories of the 5mm (Miniature), 3.5 mm (Compact), and 2.5 mm (Subminiature) probes. In addition, it lists the replacement part numbers of the parts in the otheractive and passive probes.I didn't search through every catalog from the 1950s to the present day soit does not include every probe, but it should cover 85% to 90% of the Tekprobes in common use today.It is located in the Files section of the TekScopes archive at:/g/TekScopes/files/Tektronix%20Probe%20Replacement%20Parts%20and%20Accessories.pdfDennis Tillman W7pF


File /Tektronix Probe Replacement Parts and Accessories.pdf uploaded #file-notice

[email protected] Notification
 

The following files have been uploaded to the Files area of the [email protected] group.

By: Dennis Tillman W7pF <dennis@...>

Description:
Pictures and part numbers for all the parts and accessories of the 5 mm (Miniature), 3.5 mm (Compact), and 2.5 mm (Subminiature) probes. In addition, it lists the replacement part numbers of the parts in the other active and passive probes.


Tektronix Probe Replacement Parts and Accessories

 

I assembled together a PDF for the Probe Replacement Parts and Accessories
for most of the Tek Probes.
It has pictures and part numbers for all the parts and accessories of the 5
mm (Miniature), 3.5 mm (Compact), and 2.5 mm (Subminiature) probes.
In addition, it lists the replacement part numbers of the parts in the other
active and passive probes.

I didn't search through every catalog from the 1950s to the present day so
it does not include every probe, but it should cover 85% to 90% of the Tek
probes in common use today.

It is located in the Files section of the TekScopes archive at:
/g/TekScopes/files/Tektronix%20Probe%20Replacement%20Parts%
20and%20Accessories.pdf

Dennis Tillman W7pF


Re: OT! OT! --- E-bay fee change -- OT! OT! Cross posted with HP group.

 

Hi Daniel et al,
It always surprises me that people are so easily outraged by changes like this one that eBay has in the works. eBay Inc. is a publically traded company beholden to its stockholders, not to you or me. Their management has to constantly balance the needs of their stockholders, sellers, and buyers while insuring they don't violate the laws and customs of every country they do business in. I don't envy them. Any change they make is bound to anger some of their constituents.

We all have the ultimate power to determine if this was a good or bad decision on their part by what we do next. It is simple: Stop using them if you don't like this new policy.

I became a member 21 years ago, just 4 years after they started. In my time as a member I can easily see how it evolved. I welcomed some things they did, and I was dismayed by other things. I do not expect it to be the same as it was back then and neither should you. I still find it extremely useful, although not for what I was using it for back then.

As they evolve so do I. I have had to accommodate their ever changing rules and requirements so I can continue to take advantage of the amazing marketplace they have created for exchanging goods. In the 25 years since they were founded near the East Bay in San Francisco they have revolutionized buying and selling. I'm certain of one thing: eBay will continue to evolve and stockholders, buyers, and sellers will continue to complain about it until they vote with their feet.

It sounds like some of you feel entitled to be treated a certain way by eBay and you are angry that you have made an incorrect assumption. Welcome to the club. I was angry when I moved out on my own and my mom didn't come over to my apartment to vacuum, do my laundry, and continue cooking for me. Eventually I got over it, I hope you do too. eBay still has plenty to offer if you know what to look for and how to find bargains.

I appreciate the members who are offering suggestions on how to accommodate the latest change coming from eBay. The alternative, complaining about the changes, doesn't help. eBay does care about you (in the big sense) but they have hundreds of millions of stockholders, sellers, and buyers to also care about. When you realize how insignificant you are it might help you to understand that complaining is a waste of time. Your choice is to evolve with eBay or vote with your feet by leaving.

Dennis Tillman W7pF

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Daniel Koller via groups.io
Sent: Tuesday, April 27, 2021 11:26 AM

<SNIPS>
Hi folks, this is OFF TOPIC because it's about e-bay, but on the other hand, with the exception of my older gear, it's just about the only way I get *any* Tek or HP gear these days. So, with apologies if it drags on too long and in the wrong direction,....
I got a message from e-bay that explains they are changing their payment structure. According to that, sellers will need to directly link a bank account to e-bay so that they can receive payments directly from buyers. By May 21, if you do not link a bank account to e-bay, they will not allow new postings! So, the implication is that Paypal is no longer going to work. I don't know about folks here, but I suspect, like me, they are a bit older, financially conservative, and are loathe to link a personal bank account to e-bay. To this day I do not have my paypal account "linked" to my bank account. I can have all my on-line accounts hacked, but none of them have any access to my bank account.




--
Dennis Tillman W7pF
TekScopes Moderator


Re: 7A16A with an unknown modification MOD515D

 

No, nothing labeled like that. I'm sure it's just a mistake in the parts list.


Re: CRT's

 

Hi Bill,
Wrong Bill. It came from Bill Higdon, not you.
Dennis

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Bill Riches via groups.io
Sent: Thursday, April 29, 2021 6:54 AM
To: [email protected]; [email protected]
Subject: Re: [TekScopes] CRT's

To All - I did not post that link. Dont know where that came from. i have not posted anythin to this list for a few months.
73,
Bill WA2DVU
On Wednesday, April 28, 2021, 07:57:25 PM EDT, Dennis Tillman W7pF <dennis@...> wrote:


Hi Bill,
If you are going to post a suspicious link please be sure to say what it is for.
I can confirm (for Bill) that it is not suspicious after I checked it out.
It is a box of CRTs in the Portland area. At least one or two of them look like TV CRTs. The others are hard to tell. They appear to be old.
Dennis Tillman W7pF

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Bill Higdon via groups.io
Sent: Wednesday, April 28, 2021 12:40 PM
To: [email protected]
Subject: [TekScopes] CRT's

Say this earlier








--
Dennis Tillman W7pF
TekScopes Moderator












--
Dennis Tillman W7pF
TekScopes Moderator


TDS 380 Attenuator Resistor Replacement Specs

 

Hi Folks. New member, first post . . . I recently picked up a couple of new to me Tektronix scopes to replace my Hitachi V212. The 2236 is up an running beautifully after some cleaning, but the TDS380 has a (hopefully) small issue: No input on CH1. I've traced the problem down to what looks like a burned 50 ohm thick film resistor on the input of the attenuator board between the BNC and one of the capacitors on the board. (not quite sure how to post photos here yet but hopefully this link works: /g/TekScopes/photo/263498/3215960?p=Created,,,20,2,0,0)

I'm thinking I can simply solder a 50 ohm resistor between the BNC connector and the SMD capacitor that the original resistor links (the larger capacitor at the end of the first relay in the photo) . Any thoughts about doing this and what power rating the resistor should be?

Thanks.

Rich


Re: OT! OT! --- E-bay fee change -- OT! OT! Cross posted with HP group.

 

Amazon in Europe has the ability to link your account as the only
payment method, and it works perfectly well for variable,
non-recurring payments of all sorts of amounts.

On Thu, Apr 29, 2021 at 9:02 AM Szabolcs Szigeti
<szigiszabolcs@...> wrote:

Hi,

Interesting, that is definitely not going to work in a lot of places
outside the US. At least here, for example (Hungary, but I think true for
most of Europe) it is virtually impossible to pull money off an account
without explicit authorization. You can set up recurring variable amount
payments, like utilities bill, etc., but those can have limits and other
controls. There isn't any easy way for someone to just get money out of an
account without the approval of the owner. So I don't think this would be
the purpose for eBay.
As far as I know, with PayPal you only have to link an account if you are
selling and want to take the money out. At least I have never linked
anything to my PP account (other than a credit card (a virtual one, with
hard limits) and I was still able to buy and sell. I just used the amount
from the sale to buy other stuff (a lot of Tek stuff, to stay on topic),
never removed it from my PP account.

Szabolcs


Harvey White <madyn@...> ezt ¨ªrta (id?pont: 2021. ¨¢pr. 28.,
Sze, 21:51):

One thing to note is that credit cards may be easily disputed, thus not
guaranteeing EBAY their money immediately. Bank accounts may be harder
to dispute and more difficult to correct.

Note: in the US, debit cards, while they are convenient in maintaining
control over an account balance, do not have (or have not had) the legal
protections that credit cards do. May be the same with a bank withdraw.

Harvey


On 4/28/2021 2:21 PM, Martin wrote:
Hi Dave,

OK, I don't actually know Paypal, never subscribed to it as I have
learned about all these experiences before.

Still I do not understand why Ebay needs any agreement at all with their
new payment methods.
They already could dip into my account via the credit card, so what else
do they need?

cheers
Martin













Re: OT! OT! --- E-bay fee change -- OT! OT! Cross posted with HP group.

 

I guess it is different in every country. In Germany you can order your bank within 6 weeks to cancel any direct debit.
vy 73 Heinz DH2FA, KM5VT

Von meinem iPhone gesendet


Re: OT! OT! --- E-bay fee change -- OT! OT! Cross posted with HP group.

 

Hi Jeff,

On 28. Apr 2021, at 22:28, Jeff Dutky <jeff.dutky@...> wrote:
There may also be a difference in the transaction fees that eBay needs to pay...
thats the most likely explanation I heard so far as to why they want to stop going via a credit card. The credit card company charge for their services... So for Ebay this is essentially a move to save money.

But also, as has Harvey pointed out, you can dispute the amount taken on your credit card and then Ebay would have to prove something. Thats also a cost factor, but authorising Ebay to withdraw whatever sum they like from my bank account is going too far IMHO. I had my phone provider authorised many years ago, when one day they charged 10x too much due to some mistake in their accounting system. Although they did correct it quickly, for me that was the trigger to ban all services from my account where the amount is not fixed.

I wonder why banks don't offer something like a pre-authorization, where you authorise once but get a message you have to confirm before the transfer is actually carried out. That way it would still be quite comfortable as you do not have to remember, but you can withhold the transfer if deemed incorrect.

cheers
Martin


Re: Recapping Tektronix 2465

 

I received the material from Mouser, for those interested I report the list of what I found available and I ordered:
/g/TekScopes/files/mouser%20TEK2465.xlsx

More or less everything corresponds to what was found on this group, except the 7 ohm NTC, I found one that should be fine with code 995-SL157R005-L. However I did not use it because the 2 original NTCs measured with the ohmmeter, report the correct resistance.

For those like me who are not familiar with the Mouser catalog, I think I can say that, for example, the codes 647-UHE1E101MED, 647-UHE1E101MED1TA, 647-UHE1E101MED1TD correspond to the same component but in bulk, or taped etc.

I started working with the A2-A3 boards and I have some questions, if anyone would like to answer:

- I found R1016 swollen, then unsoldering it broke, what to replace it with? A common metal or ceramic film?

- I followed the method of searching for the shielded outer end of non-polarized capacitors with the oscilloscope but for several specimens I don't get any difference, or uncertain differences by inverting the connections on the pins. Yet the test clearly works by trying some old capacitors found in my drawers. Does this mean an error on my part, or that for those components the direction of insertion is indifferent?

- Still speaking of non-polarized capacitors, in the wiring diagram does the shielded outer end correspond to the curved line of the capacitor symbol?

Thank you for any information already received and in the future and I apologize for any errors but I'm using google translate....

Gio


Tek DSA8200 help wanted

 

I have a Tek DSA8200 w/ 2 TDR modules. It was retired from service qualifying HDMI cables. The HDMI standards changed and now you need a 4 port VNA to test HDMI cables. In any case when I contacted Tek about getting the 80SJNB package they told me it was obsolete and I needed to get a DSA8300. The software would not work on the DSA8200 any more??? Once they figured out there was no unlimited checkbook at hand they moved on.

At this point I would like to explore how to get the 80SJNB software package on this unit if its possible. Anyone with experiece dealing with this could probably give me some insights. Also about the Iconnect package which again was not available. How does software become no longer made??? To be sure I'm not ready to spend $$$ to get this all running on my obsolete hardware.

Any advice? Or maybe I'll just sell it.