What is this soft metal, and is it toxic?
It's parts of a plasma etcher that are in the high vacuum area. The ceramic plate had wafer lifting pins and was bonded
to a thick aluminum plate with low temp metal brazing.
I can gouge it easily at a temperature of 60 deg F and the tool feels sticky. A push and twist captures the tool and holds its
cantilevered weight.
Could this be Woods metal? Gallium? Toxic Mercury Cadmium Lead amalgam?
I am thinking it must have been stable in vacuum with some warm temperatures when the etcher was running...
|
Re: 7854 readout and stored waveform jitter
Hi Fred,
Look up the part numbers for U620 and U1720 in the service manual.
Then we can check the Tek Semiconductor Common Parts Catalog and find out what they are.
Dennis Tillman W7PF
toggle quoted message
Show quoted text
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of
fred@...
Sent: Sunday, December 02, 2018 9:22 AM
To: [email protected]
Subject: Re: [TekScopes] 7854 readout and stored waveform jitter
Hi Fred,
We share a love of the 7854. I have a few troubleshooting related
questions and suggestions of my own:
It sounds you have isolated the problem to the display board.
As Raymond Domp Frank already suggested, remove and reseat ALL contacts
to break oxides.
Is there any chance this is an intermittent problem?
If this is an intermittent problem is it temperature sensitive - you can
probably test this with a hair dryer and a can of FreezIt.
Is this jitter present the moment the CRT warms up from being powered
off overnight? That would be a clue its temp sensitive.
At this point my favorite tool is a can of FreezIt with a thin tube to
reach into difficult places.
My first test is to use FreezIt to freeze everything on the entire board
hoping that momentarily cures the problem or alters it's behavior in
some way. If that happens I proceed to the next step after the board has
a chance to warm up again.
Now I spray FreezIt locally in different areas to narrow down the
search.
Finally I start freezing individual ICs, semiconductors, and tantalum
caps hoping to get a reaction from one of them.
Dennis Tillman W7PF
I replaced all electrolytics on the display board, checked the
inductors, but no change.
Probed +15V1, -15V1, +15V2 and -15V2, everything is fine. The only
components common to horizontal and vertical outputs are U620 and U1720,
but I don't have replacements at the moment. The problem is not
intermittent, the jitter frequency is a only couple of Hertz. Tried the
freeze spray, no sensitivity. Could it be that the start time of the
readout/stored waveform is jittery? What's the mechanism that starts the
readout?
--
Best regards,
Fred S.
-- Dennis Tillman W7PF TekScopes Moderator
|
Re: Viewing hood part number for 7000 series scopes
Hi Gary,
If you're looking for one of these I have one I don't need.
You can have it for $20 + $15 shipping instead of the $50 + $30 shipping this one is listed for.
CONTACT ME OFF LIST if you (or anyone else) wants it at dennis at ridesoft dot com.
Dennis Tillman W7PF
toggle quoted message
Show quoted text
-----Original Message-----
From: Glydeck via Groups.Io
Sent: Saturday, December 01, 2018 11:38 PM
Subject: Re: [TekScopes] Viewing hood part number for 7000 series scopes
There is one on eBay
/332196485087
On Dec 1, 2018, at 8:51 PM, John Griessen <john@...> wrote:
On 12/1/18 10:11 PM, Gary Robert Bosworth wrote:
My manuals do not list a part number for the viewing hood for any of my 7000 series oscilloscopes.
016-0154-00 is the Batman version -- pictures tomorrow...
-- Dennis Tillman W7PF TekScopes Moderator
|
Re: Tektronix Blue paint - source in the UK ??
Thanks for the tips - there is a local "auto paint matching" service
that I will try, though if the minimum quantity is a gallon it's gonna
be donkey's years before I use it all !!
BTW I did search the group.io but was unable to find much re the UK -
perhaps it was lost in the "clutter" ;-)
Dave
toggle quoted message
Show quoted text
On 02/12/2018 01:06, Jack wrote: In that case Dave, what about sourcing the pigment in liquid (tube) or powder form...? That may be the shot.
Jack
.
|
Re: Tek stuff for sale in Maryland (USA) on Craigs Listi
The line wrap got ya. That l on the next line is part of the url. Here it is again:
Vince.
toggle quoted message
Show quoted text
On 12/02/2018 02:23 PM, Dennis Tillman W7PF wrote: There is a large collection of Tektronix equipment for sale in Craig's List
in the Maryland area.
It includes mainframes, plug-ins, parts, probes, attenuators, carts,
original manuals, etc. There is a picture.
The link is
l
I have no connection to the seller.
Dennis Tillman W7PF
--
K8ZW
|
Tek stuff for sale in Maryland (USA) on Craigs Listi
There is a large collection of Tektronix equipment for sale in Craig's List
in the Maryland area.
It includes mainframes, plug-ins, parts, probes, attenuators, carts,
original manuals, etc. There is a picture.
The link is
l
I have no connection to the seller.
Dennis Tillman W7PF
|
Re: 7854 readout and stored waveform jitter
Hi Fred,
We share a love of the 7854. I have a few troubleshooting related questions and suggestions of my own:
It sounds you have isolated the problem to the display board.
As Raymond Domp Frank already suggested, remove and reseat ALL contacts to break oxides.
Is there any chance this is an intermittent problem?
If this is an intermittent problem is it temperature sensitive - you can probably test this with a hair dryer and a can of FreezIt.
Is this jitter present the moment the CRT warms up from being powered off overnight? That would be a clue its temp sensitive.
At this point my favorite tool is a can of FreezIt with a thin tube to reach into difficult places.
My first test is to use FreezIt to freeze everything on the entire board hoping that momentarily cures the problem or alters it's behavior in some way. If that happens I proceed to the next step after the board has a chance to warm up again.
Now I spray FreezIt locally in different areas to narrow down the search.
Finally I start freezing individual ICs, semiconductors, and tantalum caps hoping to get a reaction from one of them.
Dennis Tillman W7PF
I replaced all electrolytics on the display board, checked the inductors, but no change.
Probed +15V1, -15V1, +15V2 and -15V2, everything is fine. The only components common to horizontal and vertical outputs are U620 and U1720, but I don't have replacements at the moment. The problem is not intermittent, the jitter frequency is a only couple of Hertz. Tried the freeze spray, no sensitivity. Could it be that the start time of the readout/stored waveform is jittery? What's the mechanism that starts the readout?
--
Best regards,
Fred S.
|
Re: Viewing hood part number for 7000 series scopes
On 12/2/18 1:38 AM, Glydeck via Groups.Io wrote: There is one on eBay
Great photos of it! I will skip posting mine now... Mine's for sale for a more reasonable price of $15 + ship if wanting one....
|
Re: "I wonder how many members here have a 564" Dave V.
564B Mod121 with 3A3, 3B3 and 3L5. Was used extensively before I got a 7L5.
Quite often I had it coupled with my 7854 to get proper storage
capabilities.
I still remember its razor sharp CRT, I'd say it's one of the sharpest I've
ever seen, been showing the tiniest details you could see only thru a
magnifier glass.
|
Re: Tektronix Blue paint - source in the UK ??
A few years ago I took a very nice Tek Williamsburg Blue case to an established paint store here in Orange County, CA.? They had a spectrograph and came up with this formula.? The owner said it is readable by any paint store.? I bought a gallon and it was a perfect match.? It is not water based so it can be thinned to use in a spray gun.
B? ? ? ? 4Y22? ? ? ? ? ? BlackC? ? ? ? 33? ? ? ? ? ? ? ? Yellow OxideD? ? ? ? 1Y29? ? ? ? ? ? GreenW? ? ? ? 1Y32? ? ? ? ? ? WhiteE? ? ? ? 1Y45? ? ? ? ? ? BlueBase? ? 7-916
Y = ounces4Y = 4 ounces48 points = 1 ounce
I would imagine that the black used would be 4+22/48 ounces or 4.458 ounces and the yellow oxide would be 33/48 or .688 ounces.
Reed Dickinsonreed714@...
|
Re: "I wonder how many members here have a 564" Dave V.
I have one with 3A3 and 3B3
--
Jack
|
Re: Viewing hood part number for 7000 series scopes
There is one on eBay
toggle quoted message
Show quoted text
On Dec 1, 2018, at 8:51 PM, John Griessen <john@...> wrote:
On 12/1/18 10:11 PM, Gary Robert Bosworth wrote:
My manuals do not list a part number for the viewing hood for any of my 7000 series oscilloscopes. 016-0154-00 is the Batman version -- pictures tomorrow...
|
Re: "I wonder how many members here have a 564" Dave V.
I has 4 564 (one R564B w MOD121, 2x 564B, 1x 564), two from 4 is already sold.
One 564B has 3T2, 3S2, with S4 Sampling head, Plug-in is moved to 567 and 564B is sold. Because, i am interessing only on Sampling plugin.
Other 3 has 3A6 and 3B3. Not very interessing, but it is very cheap or a donate for me.
R564B is with unreliable 3T77A & 3S76
@David Holland, i has only 3A5 with grey face (it is seeing by TekWiki ())
Found other grey 3B5 is nearly impossible, i think.
|
Re: Tektronix Blue paint - source in the UK ??
Has anyone discovered a source of this paint in the UK ?
Getting it from abroad is tricky because of postal regulations.
Dave Does no-one bother check the archives? I went through precisely this exercise in the UK and sourced Tek blue paint, with the right degree of mattness, matched from a colour sample sprayed with paint from Tektronix. I even bought a load of the stuff in spray cans with the offer to sell it to guys just like you - and got very little response. So I've been using it up restoring my sizable stable of Tek gear. So, call up and buy some. They still have the formulation. Craig
|
Re: Viewing hood part number for 7000 series scopes
On 12/1/18 10:11 PM, Gary Robert Bosworth wrote: My manuals do not list a part number for the viewing hood for any of my 7000 series oscilloscopes. 016-0154-00 is the Batman version -- pictures tomorrow...
|
Viewing hood part number for 7000 series scopes
My manuals do not list a part number for the viewing hood for any of my 7000 series oscilloscopes. Someone out there must know a Tek part number. Please help.
|
Re: Tektronix Blue paint - source in the UK ??
toggle quoted message
Show quoted text
On 12/1/2018 7:33 PM, tom jobe wrote: I see that you are not getting many replies to this discussion, so you probably don't realize it has been discussed many-many times over the years here on Tekscopes.
A search of the Tekscopes message archive should turn up the actual paint formula for the Tektronix color, from which you might be able to have the paint mixed locally.
I realize the environmental laws are changing quickly around the world, but you may even be able to have this paint put in spray cans where you live.
Shops that supply the paint to automotive body repair businesses might be one place that can help you.
Best of luck!
tom jobe...
On 12/1/2018 5:53 PM, george edmonds via Groups.Io wrote:
Hi All
I also would very much like to source the pain in the UK, ?the blue paint on the ?2XXX series appears to be water based and cannot even be washed with water without if coming off.
73 George G6HIG
???? On Sunday, December 2, 2018 12:25 AM, David Slipper <softfoot@...> wrote:
? Has anyone discovered a source of this paint in the UK ?
Getting it from abroad is tricky because of postal regulations.
Dave
|
Re: Tektronix Blue paint - source in the UK ??
Krylon Baham Sea is very close. If you take a part that has the color many
automotive paint stores can match it.
Sam
W3OHM
--
Sam Reaves
ARS W3OHM
Owner and Moderator of:
LeCroy Owners Group on Groups.io (Current and Future Group)
LeCroy_Owners_Group on Yahoo! Groups (Legacy Group)
|
Re: Tektronix Blue paint - source in the UK ??
I see that you are not getting many replies to this discussion, so you probably don't realize it has been discussed many-many times over the years here on Tekscopes.
A search of the Tekscopes message archive should turn up the actual paint formula for the Tektronix color, from which you might be able to have the paint mixed locally.
I realize the environmental laws are changing quickly around the world, but you may even be able to have this paint put in spray cans where you live.
Shops that supply the paint to automotive body repair businesses might be one place that can help you.
Best of luck!
tom jobe...
toggle quoted message
Show quoted text
On 12/1/2018 5:53 PM, george edmonds via Groups.Io wrote: Hi All
I also would very much like to source the pain in the UK, ?the blue paint on the ?2XXX series appears to be water based and cannot even be washed with water without if coming off.
73 George G6HIG
On Sunday, December 2, 2018 12:25 AM, David Slipper <softfoot@...> wrote:
Has anyone discovered a source of this paint in the UK ?
Getting it from abroad is tricky because of postal regulations.
Dave
|
Re: Tektronix Blue paint - source in the UK ??
Tekscope painters,
A fellow in the US has developed paint formulas for many amateur radio cabinets. Here is part of a recent message from him. I have asked him if he has any Tektronix paid formulas (there are none in his online list). Likely some paint supply store in the UK can ¡°computer match¡± the cabinet color if you bring it in to them.
Roy
toggle quoted message
Show quoted text
On Oct 26, 2018, at 12:36 PM, Glen Zook via Collins <collins@...> wrote: I have not had a need for the paint for the KWM-380. What I do, when I need a new paint color, is to take the cabinet to my local Sherwin-Williams store and have it "computer matched". At least at my local store, so far, the match has been "perfect"! Then, I get, usually, a quart of the paint. (He uses a spray gun to apply the paint. Some stores can make a spray can from a formula.) On Dec 1, 2018, at 8:53 PM, george edmonds via Groups.Io <G6HIG@...> wrote:
Hi All
I also would very much like to source the pain in the UK, the blue paint on the 2XXX series appears to be water based and cannot even be washed with water without if coming off¡.
Has anyone discovered a source of this paint in the UK ? Roy Morgan K1LKY since 1958 k1lky68@...
|
Fred S.
Glydeck
Gary Robert Bosworth
Sam Reaves