开云体育

Hey there fgswww(?),

Look at page 6-13 of the service manual, where it describes the "Kernel
Tests" and "Exerciser Routines". The front panel LEDs likely have a message
for you relating to the specific failure the MPU has detected.
If you can post a video of the front panel as the scope is powered on, we
could help decipher the message, and/or verify your decoding...

Siggi

Writing a reply to Phillip Potter's e-mail address, it bounced back.
I've already signaled the inconvenience to the recipient's AT&T mail server. They replied me to wait 24-48 hours to solve the problem.

In the meanwhile I want to advise Fabio Trevisan also. I wrote him an e-mail to, with no reply, some weeks ago.

I've noticed that gmail.com seems to mark my e-mail sent to it as spam and blocks it, putting my mail in the spam folder of the recipients.
Several of my friends found my emails in their spam folder. And all of them used gmail.

I don't know really why that happens. My e-mail address is active by 20 years.
I'm using the same (paid) server since then. Only in last three/four months I've noted that very irritating inconvenience.

Max

On Tue, Apr 3, 2018 at 06:34 am, Adrian wrote:

From my use of google at least, information on Telequipment Ltd and its
products prior to the product facelift and subsequent takeover seems scarce,
most of the very little I know has been thanks to the VintageTek museum page
and a link to the spring '67 article in TekTalk about the acquisition. Bob
Haas and Dave Brown at VintageTek have been really helpful and burrowed around
their archives but not found anything. I was wondering if anyone in this group
may know, or could point me at, people who could help fill in the gap. Apart
from anything else Telequipment is a bit of UK industrial history that should
not be lost?

That's an interesting little scope. I have a soft spot for the early Telequipment scopes, since they seemed to be all that was affordable on the secondhand market for schoolboys like me in the 1980s. My first scope was a Telequipment D31. It taught me a lot, not least how to spot a leaky paper capacitor! It was a proper dual-beam scope (two sets of Y plates with common X deflection) and I remember being a bit disappointed when my first really grown-up scope (a Tek 535A, which I'm still using) had these 'chop' and 'alt' modes. Why couldn't it just display both traces at once? How backward! The D31 is still sitting in my Dad's shed.

Your scope does look like an S31 though with no model number. Have you mentioned it on the UK Vintage Radio forum ()? There are people there who know most everything there is to know about vintage UK test equipment.

Chris

So once upon a time, in Olde Merrie England, there was a company that produced cheap but adequate oscilloscopes which they sold around the world. Then, one day they decided to remodel them to make them more appealing to their cousins in a land far away across the sea. This must have worked because a few years later one of their cousins, a Mr Tek Tronix, sailed all the way across the sea to England and bought the entire company!

Ahem, sorry!...... Meanwhile, back at the point.... I acquired a basket case of an early (pre '58 facelift) Serviscope which may be either an early S31 or a forerunner of it. This example had obviously done service as a parts mule prior to being stored carefully for a decade or two in the corner of a particularly wet and muddy field. After spending way more hours and money than it will ever be worth in a million years it is pretty much up and running and, as it is devoid of its case, I would like to find a picture so I can re-make a reasonable facsimile of it.

In more detail, the thing is very close in both appearance and schematic to an S31. It is constructed in a point-to-point way with tag-strip and not a PCB in sight. The front panel is finished in silver (was once anyway!) hammer finish paint with white legends and black & white knobs. From the looks of it the case must have been a 5-sided box a la the S51 and was retained by two 1/4 turn fasteners on the rear panel.

Some pix here: /g/TekScopes/album?id=42175 Please ignore the tacked-on components, they were just to get it going and will be replaced with more authentic looking parts shortly. The chassis mounted caps and selenium rectifiers have been hollowed out and re-filled already!

From my use of google at least, information on Telequipment Ltd and its products prior to the product facelift and subsequent takeover seems scarce, most of the very little I know has been thanks to the VintageTek museum page and a link to the spring '67 article in TekTalk about the acquisition. Bob Haas and Dave Brown at VintageTek have been really helpful and burrowed around their archives but not found anything. I was wondering if anyone in this group may know, or could point me at, people who could help fill in the gap. Apart from anything else Telequipment is a bit of UK industrial history that should not be lost?

...and if you have been, thanks for reading!
Best,
Adrian

If you cannot incorporate a trade secret into your work.
Release documents under a CCL, software under the GPL, and push it out
everywhere. That way it becomes highly cost-ineffective to the rip-off
merchants.

Then go buy yourself a beer and feel good about your community spirit
and all those whom you have helped.

You probably won't like what I have to say, but here goes:

When you do a job like scanning, cleaning up, and OCR'ing
the text, of someone else's manual (tektronix, hp, ...),
and then put it out on the internet for others to freely
use, you really have to accept that others are going to use
it. Sometimes, not in ways that make you smile.

You get a copyright on original work you do, automatically;
but, it is long settled law that "sweat of the brow" does
not count as original work. "Sweat of the brow" is all
that mechanical stuff you do to make a document pretty,
OCR, and scanning... Since it is not original work, the
government is not willing to give you a limited term
monopoly on its use. A copyright is, in its simplest terms,
a government enforced, and sanctioned monopoly.

You always have exclusive rights to your work, you have the
right to keep it to yourself, and not give it away to
strangers.

Also, it might surprise you that in the days of Kinko's,
and other self serve print shops, some people still can't,
or won't print and bind pdf files themselves... and yet,
the are willing to pay for a printed and bound "free"
manual, delivered to their door. Imagine.

It is a natural function of your brain to get pissed when
people trespass on your volunteer work. The only thing you
can do about it is to stop volunteering to do such work.

And, then we all lose.

-Chuck Harris

snapdiode via Groups.Io wrote:

Hi, when I repaired my 7904 I used two BU208A with good result. I guess 485 and 7904 supplies are similar.
And it works fine.
G?ran

Did you put a copyright note on the document?

Thanx for the perfect service :-)
grtz, René

Craig gives good advice for the long term but I doubt it will fix the current problems.? You say the voltage measurements are near (+/- 5%).? That means the scope should run, just not be accurate in its measurements, timing or amplitudes.? Since the panel lights flash once, then nothing more its likely the problem is in the processor board.? Proper turn on sequence is for the lights to flash, then sequence through the channel indicators (ch 1, ch 2, ch3, ...) then finally stop at one of the lights lighted (an error condition, the lighted light indicates the error) or with all the panel lights in an operational state (completed power up).? Your scope does neither.? My bet is the A5 processor board has failed.? A VERY common failure is leaking capacitors destroy some surface mounted resistors on the A5 board.? You will need a service manual to trace and debug this fault.? I fixed exactly that on a 2445B today.

Power supply voltages are very important. I would recommend disassembly of scope and remove PS as a unit. Pay very close attention to the wiring connections. Then separate the inverter and regulator boards. Start replacing the electrolytic capacitors. C1220,C1240,C1260,C1280,C1300,C1330,C1350 on the regulator board.
Then C1111,C1110,C1102,C1101, C1113,C1116,C1114,C1115,C1132,,C1120,C1130, C1072,C1066.on the inverter board.
You will definitely need service manual to ID these parts. Match the cap’s with high quality Nichicon brand. 105c temp range and if exact values cannot be obtained you can up the microfarad value up 5% and you can double the voltage rating. Removal and replacement is very difficult if you don’t have the proper solder/desolder unit. Don’t overheat the circuit board.

Craig

I donate through payroll deduction. Guys and gals, do not overlook this
possibility. Check with your employers. It's about $19.23/paycheck for
me which comes out to $500 a year. Just twenty bucks a check! The museum
is well worth supporting.

-Bob
N3XKB

On Mon, Apr 2, 2018 at 6:28 PM, Dennis Tillman W7PF <dennis@...>
wrote:

I was not clear in my original post. For the past year the museum board has
been evaluating the best way to make their invaluable collection of
microfiche available to Tek collectors. This microfiche collection has the
potential to become the most comprehensive and valuable archive we have to
support our interests.



It was the board's conclusion, having already investigated or tried
everything (and more) that our members have suggested, that the only
possible way to make the microfiche available was through a YouCaring
Fundraiser.



They are asking for your financial help reaching their goal of $6,000. It
isn't hard to understand how unlocking the information contained in the
museum's microfiche is in our own self-interest.



I just made a $50 donation towards the microfiche scanner. I hope you will
consider making a donation as well. The process is simple, you can pay by
credit card, and your donation is tax deductible. The donation link is:





Finally, the museum could do much more if they had additional volunteers
who
are able to work at the museum. They have a long list of projects and an
acute shortage of volunteer manpower. If there is any way you can volunteer
please contact the museum at contactus@...
<mailto:contactus@...> .

Dennis Tillman W7PF

TekScopes Moderator and Co-Owner



---



The vintageTEK museum has an extensive microfiche collection and has
launched a YouCaring fundraiser to help purchase a microfiche scanner to be
able to digitize portions of the collection. Tektronix for decades released
documentation to the field on microfiche. While some of this information
has
been made public, we know specific documentation was only released on
microfiche.



Today the museum can view the information but is unable to digitize it to
be
able to support restorations, research, and customer inquiries. Please
contribute to the museum fundraiser campaign. Any amount is appreciated.



The museum operates solely by the support of volunteers, contributions, and
modest ebay sales. The museum does not charge for tours or special events
so
your contributions are essential. vintageTEK is a 501(c)(3) charity so all
donations are 100% tax deductible under section 170 of the IRS code.



Please see our blog at

<>
for more
information or visit our YouCaring fundraiser site at
<>
www.youcaring.com/Vintagetek-fiche

< <>
>



Thank you for your support and contribution.



vintageTEK

I appreciate your work and thoughts about his issue. By way of 'full disclosure', I do not have a 1S1 or a Tek Scope that would accept it.

Therefore, in no particular order.

1. It is an extremely good scan and I totally understand the work involved in creating it. I have made and posted some similar quality scans of other manuals. I thank you for your efforts and I'm very glad it is available for the folk that need it.

2. There are some of us that prefer printed manuals over .PDF manuals. When I need to do some maintenance on a piece of equipment, I search for a printed manual and if I cannot find it but have the .PDF manual, I will print out the necessary pages in order to make the needed repair.

3. If someone wants to assume the expense of downloading and printing a specific manual (including all the 'oversized' pages) and make it available for sale with good quality and scale, at some sort of profit over the work involved in printing and selling the item, I really don't have a problem paying them for their effort. I would be happy to pay you for it, if you chose to print the manual and it represented a 'savings' over my downloading and printing the manual. Such 'savings' would likely come only with 'volume'.

4. I agree it would be reasonable and appropriate for the person selling the printed manual to acknowledge your efforts (assuming he/she knew from whence it came) in making the scans available to the general public so that the general public could make their own decision about whether to buy the marketed printed manual or create their own. I have the appropriate printers to make such 11 x 17 prints. However, paper and ink are not 'free'.

In this particular case, I think the price is a bit excessive. However, I have not 'priced' the expense of printing this particular manual.

In conclusion, thanks for your efforts in making this manual available.

Joe

On 2018-04-02 8:57 PM, Richard Solomon wrote:

File a complaint with e-Bay. If you have
evidence, they will come down on the seller.

I wouldn't mind if every seller who's selling CD-ROMs or printouts of
freely available PDFs got reported. It's a dumb scam.

(Disclaimer: I've put considerable effort into some of those Tektronix
PDFs so I might not be completely impartial, but I think it's a dumb
scam regardless of whose work they're leveraging.)

73, Dick, W1KSZ

On Mon, Apr 2, 2018, 5:54 PM snapdiode via Groups.Io <snapdiode=
[email protected]> wrote:

So about 15 years ago I made a 1S1 manual in Word by scanning the original
in three passes, to end up with OCR'd text, B/W diagrams, grayscale
pictures, and 11x17 color schematic pages.
I made it into a PDF and it ended up on BAMA.as a free download.



Which is fine, but now I see this on eBay




I can see by the thumbnail this is my PDF.

Is it too much to expect some sort of credit for the work of creating that
PDF?

Besides I keep finding typos and graphical oddities in the document.

DITTO!!

Anticipate retiring in 15 months and will need all the help I can get.

Thanks for everyone's help with all my previous and future 'projects'!!

Joe

Welcome to the digital age, a battle ArtekManuals fights every day

On one side of the argument is that you have a "derivative copyright". On the other side "derivative" is subject to a matter of degree if one decided to challenge a usurper in court. Once you post something like that on the BAMA or KO4BB you have effectively put it in the public domain.? If YOU did NOT post it on BAMA or KO4BB and you can prove it is your scan that is up there the web site managers are pretty good about taking down? PDF's that are your work product if you dont want them posted. AS for Ebay good luck getting them to do anything about it (take a good look at the value of your time and the emotional cost of challenging the guy)

If confronted most people (90%)? will honor your work and take the item " off the market".? About 10% just laugh at you. HE cant be selling many of the 1S1 I think I might have sold two copies in the last 15 years.? The laugh may be on him by the time he looks at the return on his listings with fees every month for years.

Explain to me in detail how you know for sure it is your work product.? To the casual observer it looks like a standard Tek cover to me.

-DC
manuals@...

--
Dave
Manuals@...
www.ArtekManuals.com

On Mon, 02 Apr 2018 16:37:31 -0700, you wrote:

Thanks. I tried some typeface detection websites but even they couldn't come up with anything. It looks like the model numbers are in a different typeface?

All simple to draw, or so I thought. I used calipers on the spines and tried to reproduce the letters with Open Office Draw, but it's a terrible tool to play with.

I'll try CAD tools next. Ideally I'd like a tool where I have separate X and Y scaling, so I can compensate for any printing discrepancies.

I've used corel draw to generate a font. That may work for you.

Harvey

I can try drawing the letters as an RF trace in Allegro, I have precise control over widths and bends. But the K has a slight curve.

I've always wondered how this was printed back in the day. Some other manuals look like it was hot-stamped into the plastic.

Now that I look closer at the Tektronix manual, it looks like it could be a full size decal. That's what I'm trying, I bought some laser printer decal sheets and going to give it a try.

Donation made.

Thanks,

Shaun Merrigan

File a complaint with e-Bay. If you have
evidence, they will come down on the seller.

73, Dick, W1KSZ

On Mon, Apr 2, 2018, 5:54 PM snapdiode via Groups.Io <snapdiode=
[email protected]> wrote:

So about 15 years ago I made a 1S1 manual in Word by scanning the original
in three passes, to end up with OCR'd text, B/W diagrams, grayscale
pictures, and 11x17 color schematic pages.
I made it into a PDF and it ended up on BAMA.as a free download.



Which is fine, but now I see this on eBay




I can see by the thumbnail this is my PDF.

Is it too much to expect some sort of credit for the work of creating that
PDF?

Besides I keep finding typos and graphical oddities in the document.

So about 15 years ago I made a 1S1 manual in Word by scanning the original in three passes, to end up with OCR'd text, B/W diagrams, grayscale pictures, and 11x17 color schematic pages.
I made it into a PDF and it ended up on BAMA.as a free download.



Which is fine, but now I see this on eBay



I can see by the thumbnail this is my PDF.

Is it too much to expect some sort of credit for the work of creating that PDF?

Besides I keep finding typos and graphical oddities in the document.