Date   

Re: Tek Blue Paint Color

Craig Sawyers <c.sawyers@...>
 

If you have similar things to us in the U.K. I d take a panel into an automotive paint supplier.
Most of
ours have an optical paint marcher that gives a match code that paint can be mixed with.

Robin
I've already done that for you! I obtained a can of Tek blue spray paint from Tektronix, spray painted
a swatch and sent it to https://www.paints4u.com/ . They did a match not only for colour but also
matt-ness.

So in the UK, just contact them. You can either buy spray cans, or a can of paint and thinners if you
want to use an airbrush or spray gun.

Craig


Re: Wanted : plug-in 100x attenuator module [part number: 307-1014-10] to restore a Tek 475

 

AFAIK, the 475 does not contain a roll, even though the HV section contains a silvered-ceramic support. The 422, 453 and 454 contain

Raymond


Re: Tunnel diode 585a

 

Fred,
If you want, send me your TD and I'll check it for you. We're both in NL, as you may remember.

Raymond


Re: Tunnel diode 585a

 

Fred,
I can't definitely find the case that the 1N3848 lives in. Is it the traditional in-line TD shape like the 1N3712, 1N3716 etc.? You may want to place a link here to a photograph. If it's that sort of shape, I can definitely help you. I have several 10 mA TD's NOS. If it's a Tek 152-0140-01, I may have an original but I'll have to have a look after the weekend.

Raymond


Re: A new project saved the third 2445 that saved the other 2445 Who saved the 2465

David Az
 
Edited

success
I was able to solve the problem in A5 Board
I do not know if you remember the problem that was back then in 2445
Of a spot instead of a trace
I suspected The source of the problem is the 4051
U2408
U2418
U2335
I got the 4051 components today and they are naw only in smd version.
The problem was that I had to put them on adapter
And the adapter I have is wide.
i Solder the 4051 to the adapter
And changed the U2408
There is room for the adapter in the u2408
Did not solve the problem
Now I did the changing chair exercise.
I knew now that the 4051 of the U2408 is ok

I moved The 4051 that was at U2408 to the U2418
the problem is not solved.
Now I know the two 4051 is ok .and dip version.
I removed the U2335
Here the problems began
It was very problematic to remove it
And in the desoldering process i damaged some via
And not enough those via were in the third layer of the pcb
pin 2 from u2335 to r2542
and pin13 to r2330.
I bridged the dots.
I put the 4051 DIP VER thet I removed from U2418
and move it to the U2335
naw u2408 is 4051 smd with adapter
u2418 is the 4051 from U2408.
AND u2335 4051 is from U2418 (DIP VER)
I put everything back and I held my fingers
And works
The problem with A5 was solved
There is a trace
the dot problem Solved .
The third 2445 works.

Of course he has the problem
Non-fixd brightness
received inherited from 2465
Which originated in the U950.
I bought the second 2445
Take it For the U950 inside it.
I bought the third 2445 for the U950
To fix the second
Who had a problem with the A5 dot problem
and fixd brightness.
Now I've renovated the third
That I was not even planning to renovate because I wanted to test the 4051 theory.
And I did not want to deal with the oscilloscopes I'd already fixed
It was easier for me to fix the third one just to test the hypothesis.
I'm stubborn
I do not like
Not Solving a Problems
And although I fixd the
2465
2445
I was still thinking about the problem that was in the A5
I solved the problem despite all the difficulties.
(Do not worry about not planning to buy a fourth oscilloscope
the 24XX series No longer challenging me.
Maximum in the future if you find a cheap U950 I will buy
The third works
Except that there is no control over brightness.
https://groups.io/g/TekScopes/photo/14645/18?p=Name,,,20,1,0,0

https://groups.io/g/TekScopes/photo/14645/23?p=Name,,,20,1,0,0

https://groups.io/g/TekScopes/photo/14645/24?p=Name,,,20,1,0,0

https://groups.io/g/TekScopes/photo/14645/27?p=Name,,,20,1,0,0


Re: Tek Blue Paint Color

David Holland
 

Try this thread:

https://groups.io/g/TekScopes/topic/7658428

There's a couple of posts from Jerry Massengale, Paul Amaranth, and Reed
Dickinson later in the thread that may be of some help.

I've never tried the information there to have some mixed for myself, so
YMMV....

David


On Sat, Jan 13, 2018 at 2:45 PM, Robin Birch <@RobinBirch>
wrote:

If you have similar things to us in the U.K. I’d take a panel into an
automotive paint supplier. Most of ours have an optical paint marcher that
gives a match code that paint can be mixed with.

Robin

Sent from my iPhone

On 13 Jan 2018, at 19:39, Sam Reaves <sam.reaves@...> wrote:

Thanks Gary I know of that one and there is another one out there that is
close but I have a project where I want to have a metal shop vendor
paint a
couple of hundred covers for aluminum boxes a similar color for a ham
project. If someone knows the Pantone color number that is all that I
would
need. I have narrowed it down to one of 32 tiles but that is getting a
patch from a computer display which is different than a paint match.

--
Sam Reaves
ARS W3OHM
Owner and Moderator of:
LeCroy_Owners_Group on Yahoo! Groups
LeCroy Owners Group on Groups.io (backup group)
​Electronics and Mechanical Hardware Design Engineering Manager
Xerium Global Research Center​






Re: Wanted : plug-in 100x attenuator module [part number: 307-1014-10] to restore a Tek 475

Sam Reaves
 

Just as a reminder you need to use solder with a 2% silver content so you
won't break the bond to the ceramic. You should find a small spool of it on
one of the scope panels, maybe behind the rear panel? Not sure whether the
475 had one stashed in it but I know the the 500 series and the older
422/453/454 etc. had one.

--
Sam Reaves
ARS W3OHM
Owner and Moderator of:
LeCroy_Owners_Group on Yahoo! Groups
LeCroy Owners Group on Groups.io (backup group)


Re: Tek Blue Paint Color

 

If you have similar things to us in the U.K. I’d take a panel into an automotive paint supplier. Most of ours have an optical paint marcher that gives a match code that paint can be mixed with.

Robin

Sent from my iPhone

On 13 Jan 2018, at 19:39, Sam Reaves <sam.reaves@...> wrote:

Thanks Gary I know of that one and there is another one out there that is
close but I have a project where I want to have a metal shop vendor paint a
couple of hundred covers for aluminum boxes a similar color for a ham
project. If someone knows the Pantone color number that is all that I would
need. I have narrowed it down to one of 32 tiles but that is getting a
patch from a computer display which is different than a paint match.

--
Sam Reaves
ARS W3OHM
Owner and Moderator of:
LeCroy_Owners_Group on Yahoo! Groups
LeCroy Owners Group on Groups.io (backup group)
​Electronics and Mechanical Hardware Design Engineering Manager
Xerium Global Research Center​



Re: Tek Blue Paint Color

Sam Reaves
 

Thanks Gary I know of that one and there is another one out there that is
close but I have a project where I want to have a metal shop vendor paint a
couple of hundred covers for aluminum boxes a similar color for a ham
project. If someone knows the Pantone color number that is all that I would
need. I have narrowed it down to one of 32 tiles but that is getting a
patch from a computer display which is different than a paint match.

--
Sam Reaves
ARS W3OHM
Owner and Moderator of:
LeCroy_Owners_Group on Yahoo! Groups
LeCroy Owners Group on Groups.io (backup group)
​Electronics and Mechanical Hardware Design Engineering Manager
Xerium Global Research Center​


Re: Source for long chassis mount BNC connector

 

Someone told me the BNC connectors on the front of most 500 series plugins would work. Can someone verify they are the long ones.


Re: 2465B CTT Option 06 repair Test 84 Fail 0C (a Test 84 Fail 0F before..) [Solved]

 

Hi Leo,

I had the same problem and resolved it the same way by just running the calibration procedure. I just used a 1 MHz OXCO to generate the calibration signal even though people told me that wouldn't work.

Manuel


Re: Repairing a 466 oscilloscope

Nikolay Belikov
 

Hello Fabio!

Thank you for the suggestion, and I also remember reading your thread, but unfortunately, the button does not have any rivets as well.

If you look at the board, you will notice that the pads where the wires are
soldered, were meant for the combo pot to be soldered directly onto, but
still Tek mounted sideways and connected it using wires.
Well, mine is indeed soldered directly onto the board, so I couldn't do anything to remove it while the board is still inside the instrument. I meant desoldering the pins that slide into the connector as the other way of removing the board. So it seems that they did produce quite a few scopes scopes before realizing that they screwed up. Looking at the BOM I see that the P/N was changed from 311-1669-00 to 311-1864-00 after S/N B071810, and the only change I see is the location of the pins.

I'm thinking about ordering a replacement part, Qservice has it.


2465B CTT Option 06 repair Test 84 Fail 0C (a Test 84 Fail 0F before..) [Solved]

satbeginner
 
Edited

Hi all,

recently my 2465B with the CTT Option 06 installed gave an Test 84 Fail 0C at power on.
Earlier it gave a Test 84 Fail 0F a few times, but this one does not exists in the manual.... ;-)

According to the flowchart in the service manual I checked several signals and transistors but they all checked out.
And also, if I ignored the error by pressing the "A/B Trigger" everything was working, also the CTT functionality was OK.

So basically, there was an error, but nothing relevant is broken?
And since Google is my best friend, I started looking around some more and found this:

On this Russian site people are talking about this error, and they suggested it can be caused by the calibration that drifted off.
This is the site: http://forum.vegalab.ru/showthread.php?t=51277&page=40

Long story short: I placed the CAL jumper and did the CT calibration only, and this did resolve the problem, the error at power-on is gone.

Just my two cents.

Un saludo,

Leo


Re: Tunnel diode 585a

Fred Schumacher
 

Hi Raymond,
It is the 1N3848 with an Ip=10mA. This TD is sandwitched between a holder with golden contacts.
I will keep my fingers crossed.
Thanks
Fred


Sent from my iPad

On 13 jan. 2018, at 18:48, Raymond Domp Frank <@Raymond> wrote:

Fred,
Check the type or main specs of the TD you need. Most likely I have a replacement for you.

Raymond



Re: Tunnel diode 585a

 

Fred,
Check the type or main specs of the TD you need. Most likely I have a replacement for you.

Raymond


Re: Tek 475 attenuator module [100x]...missing

agaguk_99@...
 

Did you tried to resolder the attenuator ? Fix 2 of them doing that on my 475. Put some flux and a bit of new solder.


Re: OT: need special water line adapter or fittings

ken chalfant
 

Greetings,

I confess that I may not exactly understand your need.

However, it might be worth your time to wander through www.mcmaster.com<http://www.mcmaster.com> and www.supplyhoouse.com<http://www.supplyhoouse.com>

Wishing you success.

Ken

On 12Jan, 2018, at 2:51 PM, John Griessen <@jgriessen<mailto:@jgriessen>> wrote:

On 01/12/2018 03:29 PM, Ed Breya via Groups.Io wrote:
Lastly, I could make a tube section with a very sharp pre-bend and then cut to size and bead it, to use as the elbow/adapter.

That's likely to work best. To bend it you can put fine sand in first, get hot below dull red, bend tightly.

If it doesn't want to go all the way 90 deg at first try, just anneal by getting to dull red and water
quench to pop off some of the scale. Then go at it again, and when annealed you can tap on it and
smooth plier it to reshape to get your ferrule on. Remember to blow out any trace of that sand with compressed air both directions.


Re: Tunnel diode 585a

Fred Schumacher
 

After checking and readjusting the trigger circuits, I came to the conclusion the TD was at fault.
I checked it alone according to the RCA TD manual and it turned out to be wrong.
So I have to look for a new TD to have my scope working as it was designed to do so.
Thanks to all for the help.
Fred

Sent from my iPad

On 7 jan. 2018, at 22:33, Albert Otten <aodiversen@...> wrote:

On Sun, Jan 7, 2018 at 11:19 am, Fred Schumacher wrote:

Is there a method to check this tunnel diode alone?
Any help appreciated.
Fred,

I would first try to re-adjust the triggering circuit as per calibration procedure. After so many years the bias current needed by the TD will have drifted up somewhat. Maybe a simple re-adjustment solves the problem. Especially because sometimes triggering works an sometimes not. The needed bias is somewhat temperature dependent, so the set value might be just at the border.

Albert



Searching for source for P6138 spare part

Myname
 

Dear experts,

Yesterday, just when I - like zillion times before - was pulling off the probe tip of my P6138, I heard a soft crack, and when I looked at the probe I realized that its contact pin had broken off :-(.

http://www.bilder-hochladen.net/files/big/yb2-k-5cf2.jpg

Therefore my question: Does somebody of you know a source where I can buy the spare part 206-0392-00 for not too high a price (incl. shipment costs to Germany)? Or should I better try to get a used P6138 on Ebay?

Thanks in advance for any help.

Best regards

pudu51


Re: Wanted : plug-in 100x attenuator module [part number: 307-1014-10] to restore a Tek 475

donald collie
 

No, it`s a 307-1014-01 [I misread the part number on the one in the other
channel`s attenuator assembly]. I wondered why the CH2 was producing
nothing on 4 positions - the 100x attenuator is missing completely.
A good thing Tek socketed their transistors in the 475, i`ve found
two defective so far. I find the easiest way to service the 475 is to
remove each transistor and test . What goes wrong with a 42 year old 475? :
leaky DC restorer diodes, and failed sweep generator transistors [Q904, and
Q922]
When I was working for Broadcasting in the 70`s we had a 465, an R&S
POLYSCOP 1, and an AVO model8 Mk 5 multimeter, and that was all we had to
maintain 3 transmitting sites with 20kW television and Radio transmitters
and auxiliary equipment. Seat of your pants stuff! Now I have, in my own
test bay, a 475, an R&S POLYSCOP 2, and an AVO model8 Mk5, amongst other
equipment. Funny how all comes to he who waits. Thankyou for responding - I
have already asked Susan at Sphere Research to put one aside for me- so
i`ll obtain one there. [...and some of the correct transistors:-)
..............................................................................................................73`s
de Don ZL4GX


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On Sat, Jan 13, 2018 at 7:56 PM, Dave Casey <polara413@...> wrote:

I have both 307-1014-00 and 307-1014-01 to offer; brand new, never used.
But I do not have the -10.
The -00 and -01 are both 100x. The -10 is either just a later version or
perhaps designed to terminate differently? The 7D15 and 7A15A use the -00
and later the -01. The 7A18A uses the -01.
Haven't checked the 475 manual to see if earlier serials used the earlier
version or not.

Dave Casey

On Sat, Jan 13, 2018 at 12:26 AM, Harvey White <madyn@...>
wrote:

On Thu, 11 Jan 2018 19:24:58 -0800, you wrote:

Does anybody have a parts mule thet can scavenge so I can complete this
`scope [or advise where I can get this 100x attenuator module]

All I have is a 307-1014-01. Not sure that it would be the same.

Harvey



Thankyou...................................................
...............................................Donald Collie ZL4GX