Date   

Re: What removes sticker residue without hurting the blue paint?

Bob Koller <testtech@...>
 

I use automotive "Wax and Grease Remover" obtained from an automotive paint supplier, it is used a prep agent just prior to painting. Works great for removing sticker residue, and other greasy stuff. Won't harm paint or plastic.
I also use it for it's intended purpose just prior to any refinish job.


Re: What removes sticker residue without hurting the blue paint?

Dave Voorhis
 

I’ve had good luck removing labels, label gunk, and other surface contamination with Clutch & Brake cleaner, like this: https://www.amazon.co.uk/Holts-1831697-52460600131-Brake-Cleaner/dp/B0025KOQYY

Initially, I was concerned that it would melt plastic or remove paint, but after experiments on stray bits, I’ve not found any evidence of harm and now use it without concern.

I’ve used it on cases, plastic meter lenses, buttons, knobs, etc.

On 12 Jun 2018, at 14:44, David Berlind <david@...> wrote:

I second the naptha (lighter fluid) suggestion (although I haven't used it
on paint). I had a Simpson multimeter that had a price tag affixed to its
plastic lens for what was probably many years […] When I got home, I applied the lighter fluid with a q-tip and the
adhesive came of beautifully with no damage to the lens.

On Tue, Jun 12, 2018 at 9:33 AM, Phillip Potter <p.potter@... <mailto:p.potter@...>>
wrote:

For what it’s worth, after scrubbing the covers on my filthy 453 with a
Scotch Brite pad and IPA (the only thing that would cut the slime!), they
had a matte appearance. After consulting the “Tek Brain Trust,” I wiped
them down with WD-40 to return a shiny lustrous appearance. It helped (not
harmed) the blue Tek paint.

Now, my 453 “Shines like a dime!”

Phil, N6OMM

On Jun 11, 2018, at 11:06 PM, Adam <adam_alterman@...> wrote:

I have good success removing sticker residue with WD-40, but cannot
vouch for it’s safety on TEK blue paint.


Re: What removes sticker residue without hurting the blue paint?

David Berlind
 

I second the naptha (lighter fluid) suggestion (although I haven't used it
on paint). I had a Simpson multimeter that had a price tag affixed to its
plastic lens for what was probably many years. I didn't want to scratch or
damage the lens. I was able to lightly fingernail the paper part off.. but
the adhesive remained. After asking around (here and on other forums), I
settled on trying naptha. I was worried that it might dissolve the plastic.
But I decided to give it a go. I couldn't find a store that sold it. So, I
went to a smoke shop and there were about a dozen guys inside puffing on
giant stogies. The store was a bona fide gas chamber. I held my breath for
the duration of the transaction and until I exited the store. I got the
lighter fluid but when I got back in the car, my daughters were choking
from the stench that I had absorbed during the 60 seconds I was in the
store. When I got home, I applied the lighter fluid with a q-tip and the
adhesive came of beautifully with no damage to the lens.

On Tue, Jun 12, 2018 at 9:33 AM, Phillip Potter <p.potter@...>
wrote:

For what it’s worth, after scrubbing the covers on my filthy 453 with a
Scotch Brite pad and IPA (the only thing that would cut the slime!), they
had a matte appearance. After consulting the “Tek Brain Trust,” I wiped
them down with WD-40 to return a shiny lustrous appearance. It helped (not
harmed) the blue Tek paint.

Now, my 453 “Shines like a dime!”

Phil, N6OMM

On Jun 11, 2018, at 11:06 PM, Adam <adam_alterman@...> wrote:

I have good success removing sticker residue with WD-40, but cannot
vouch for it’s safety on TEK blue paint.





Re: Tektronix 2465. Odd wave pattern superimposed on waveforms.

Siggi
 

On Mon, 11 Jun 2018 at 22:12 John Osborne via Groups.Io <JohnROsbor=
aol.com@groups.io> wrote:

The scope displays a good sine wave on all inputs. But superimposed on the
perfect sine wave is a rippling wave that travels from right to left in
quick succession. Perhaps 6 waves per second. It does not distort the sine
wave in any way but travels along the wave on both the top and bottom edge
of the trace. The wave is much lower in intensity than the sine wave
displayed but is very noticeable.
Hey John,

welcome to the group and congrats on the 2465 - sounds like you'll feel
right at home here :).
At low sweep speeds, the 2400 scopes borrow the beam during the sweep to
update the on-screen display (OSD). This causes a little bit of artifacting
in the waveform that could manifest as you describe.
If this is what you're seeing, you should be able to verify that the
artifacting goes away when you turn off the OSD, which you do by turning
the display intensity pot to the 12 o'clock position.

IIRC there's an adjustment for this somewhere, though I'd have to grouse
through the service manual to find it.

Siggi


Re: What removes sticker residue without hurting the blue paint?

Phillip Potter
 

For what it’s worth, after scrubbing the covers on my filthy 453 with a Scotch Brite pad and IPA (the only thing that would cut the slime!), they had a matte appearance. After consulting the “Tek Brain Trust,” I wiped them down with WD-40 to return a shiny lustrous appearance. It helped (not harmed) the blue Tek paint.

Now, my 453 “Shines like a dime!”

Phil, N6OMM

On Jun 11, 2018, at 11:06 PM, Adam <adam_alterman@...> wrote:

I have good success removing sticker residue with WD-40, but cannot vouch for it’s safety on TEK blue paint.


Re: What removes sticker residue without hurting the blue paint?

Chuck Harris
 

If you soak acrylic plastics in denatured alcohol for more than
about a minute, it will form great cracks at every stress point.

US denatures its ethanol by adding poisons that will make you
blind if you drink it, and sick if it gets on your skin...

Tax cheats must be punished!

The UK, on the other hand, colors their denatured alcohol a
pretty violet color, and housewives everywhere use it as a
mixer.

Check out the comments section for Barrettine Methylated Spirit:

<https://www.amazon.co.uk/GREAVES-CO-Barrettine-Methylated-Spirit/dp/B002ATI4VG>

-Chuck Harris

stefan_trethan wrote:

I use denatured alcohol (denatured with denatonium benzoate) and found
it safe on all plastics, but I have been told the stuff in the US can
be denatured with methanol or even gasoline so be careful.

Somewhere between ethanol and acetone in terms of strength is ethyl
acetate. I don't have enough experience to advise on paint
compatibility.

The oil method and citrus based remover work well too, but the citurs
smell can be a bit strong.

ST


Re: 575 - advice sought from owners

David Holland
 

Nah its not so bad. Was only like 25-30$ (american) worth, but it was a
few years ago, so perhaps pricing has changed.

But no, the only testing I did on the old paper caps was to throw them in
the trash. They made a noise when going in, so I presume they were bad.

A few of the electros were definitely dried out tho. I had to take them
apart for restuffing.

David

On Tue, Jun 12, 2018 at 6:18 AM John <John@...> wrote:

Thanks David. That's quite a list of capacitors: did you check the paper
ones you removed to see how they had faired?

John




--
Sent from Mobile Annoyance thingy, please pardon any typos


Re: 575 - advice sought from owners

John
 

Thanks David. That's quite a list of capacitors: did you check the paper ones you removed to see how they had faired?

John


Re: Help with a TEK 502 scope

jrodriguezcsb@...
 

Hi Albert,

I have been reading in both the forum and the internet and I found quite interesting info like this page:
https://ludens.cl/Electron/tek310/tek310.html
Unfortunately, I do not have 2 HV windings, in fact I have 3. I have 3 diode tubes in the secondary...

In this forum however I have not found a clear procedure, I found several links to a previous Yahoo group but I can not access.

I will try to upload photos in that way - thanks for the advice : )

I looked in Ebay and only found a 300USD with another 250USD of shippings, as in the programming fiel, it is out of range... and in bad shape

Anyway, any idea about:
1. Anyone who sell one for parts or just the parts
2. Rewinding it

Thanks for all this support, you are such a nice guys!


Re: Help with a TEK 502 scope

Albert Otten
 

Rewinding (and its issues!) HV transformers has very often been discussed in this group. You might search the forum for old messages. A nasty circumstance is that you have 2 HV secondary windings which preferably should be wound bifilar. I recently rewound a 491 HV transformer which had just one HV winding -- far easier. And even then I had to repeat this until I had the proper technique and materials! I would go for a scratch 502A.
You can upload photos via the website. Go to the Photos section and click New Album et cetera. Or add photos to an existing album when that is allowed by the owner. If you refer to a photo then please add a link in the message since there is no good search facility in the Photos section.

Albert


Always is the pòsibility of buying anothger one for parts but, what about
rewinding it?

Has anyone done that? is it posible?


Re: Help with a TEK 502 scope

jrodriguezcsb@...
 

Hi Dave and Bob,

Thank you very much for your answers.
Yeah Dave, Ido not know what has exactly tek 502, I do not know if it is the glow of its tubes, its vintage appearance... but is has some kind of magic (like Freddy Mercury, sorry for the joke I could not resist).

Always is the pòsibility of buying anothger one for parts but, what about rewinding it?

Has anyone done that? is it posible?


Re: What removes sticker residue without hurting the blue paint?

Gary Robert Bosworth
 

I have used Ronsonol lighter fluid for the past 50 years. It is harmless
to nearly all surfaces.

Gary

On Mon, Jun 11, 2018 at 7:10 PM Dennis Tillman W7PF <@Dennis_Tillman_W7pF>
wrote:

A far too common problem I have no solution for yet:

What will remove sticker residue on Tek blue paint without harming the
paint
finish?



Stay away from GOOF OFF. Its active ingredient is XYLENE, which dissolves
paint very quickly. Don't ask me how I know :(



Isopropyl alcohol is very mild on most things but it does poorly against
the
sticker residue and often you have to rub the affected area to get the glue
to come off. The rubbing removes some blue paint and mars the finish so
that
is no good.



Would boiling water soften the sticker residue and leave the paint alone or
would it siften the paint as well.



Suggestions are welcome.




--
Gary Robert Bosworth
@grbosworth
Tel: 310-317-2247


Re: What removes sticker residue without hurting the blue paint?

stefan_trethan
 

I use denatured alcohol (denatured with denatonium benzoate) and found
it safe on all plastics, but I have been told the stuff in the US can
be denatured with methanol or even gasoline so be careful.

Somewhere between ethanol and acetone in terms of strength is ethyl
acetate. I don't have enough experience to advise on paint
compatibility.

The oil method and citrus based remover work well too, but the citurs
smell can be a bit strong.

ST

On Tue, Jun 12, 2018 at 6:13 AM, Bob Albert via Groups.Io
<bob91343=yahoo.com@groups.io> wrote:
I wonder if denatured alcohol would work. I have used it successfully on many things. About the only thing stronger might be acetone but that will eat the paint too.
Bob
On Monday, June 11, 2018, 8:40:39 PM PDT, G Hopper <kb7wsd@...> wrote:

One more vote: Goo gone is my go to. I learned about it from a woman who
refurbished photographic enlargers years ago. Mild and didn't damage
anything, but worked amazingly on adhesives and grease. Has a pleasant
smell too.

73,
Grant
KB7WSD

On Mon, Jun 11, 2018 at 8:35 PM, David M <@DaveM> wrote:

I've used WD40 with good results. Most paints seem to tolerate it well.
As with any old finish, rubbing will likely damage it. I spray a small
amount of it on the sticker, let it rest for a few minutes, spray again,
and the sticker usually comes right off, leaving what's left of the
adhesive mostly dissolved. A paper towel soaked with WD40 takes care of
the residue.
Don't know what's in WD40, or what's different from GoofOff, but, as with
almost EVERYTHING else, use at your own risk.

Dave M

On Mon, Jun 11, 2018 at 07:10 pm, Dennis Tillman W7PF wrote:


A far too common problem I have no solution for yet:

What will remove sticker residue on Tek blue paint without harming the
paint
finish?



Stay away from GOOF OFF. Its active ingredient is XYLENE, which dissolves
paint very quickly. Don't ask me how I know :(



Isopropyl alcohol is very mild on most things but it does poorly against
the
sticker residue and often you have to rub the affected area to get the
glue
to come off. The rubbing removes some blue paint and mars the finish so
that
is no good.



Would boiling water soften the sticker residue and leave the paint alone
or
would it siften the paint as well.



Suggestions are welcome.







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Re: What removes sticker residue without hurting the blue paint?

Adam
 

I have good success removing sticker residue with WD-40, but cannot vouch for it’s safety on TEK blue paint.

Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10


Re: What removes sticker residue without hurting the blue paint?

Kevin Oconnor
 

Soon I hear that H20 will no longer be available in California. The legislature has learned that microwave ovens have changed H2O into a carcinogenic substance. There will soon be labeling requirements on all water containing products that they may cause cancer.

WTF. Plan your move soon!


Re: What removes sticker residue without hurting the blue paint?

Chuck Harris
 

I avoid any cleaners that contain the solvent butylcellosolve.
It is a terrific solvent for grease, dirt, plastics, and soaks
into vinyl like it is a good idea. Given time, it will make
vinyl sticky... very sticky.

Unless they have changed their formulation, Formula 409 is mostly
butylcellosolve.

-Chuck Harris

ken chalfant wrote:

Greetings,

I have had very good results with WD-40 and a little patience.

I have used it on HP and Tek cabinets as well as an assortment of plastic enclosures.

After the WD-40 loosens the old label and sticky PSA residue then a little clean-up with alcohol, Windex or Sparkle usually finishes the job. 401 also works, but sometimes seems a little harsh.

My two cents.

Regards,

Ken


On 11Jun, 2018, at 8:10 PM, Dennis Tillman W7PF <@Dennis_Tillman_W7pF> wrote:

A far too common problem I have no solution for yet:

What will remove sticker residue on Tek blue paint without harming the paint
finish?



Stay away from GOOF OFF. Its active ingredient is XYLENE, which dissolves
paint very quickly. Don't ask me how I know :(



Isopropyl alcohol is very mild on most things but it does poorly against the
sticker residue and often you have to rub the affected area to get the glue
to come off. The rubbing removes some blue paint and mars the finish so that
is no good.



Would boiling water soften the sticker residue and leave the paint alone or
would it siften the paint as well.



Suggestions are welcome.







Re: What removes sticker residue without hurting the blue paint?

ken chalfant
 

Greetings,

I have had very good results with WD-40 and a little patience.

I have used it on HP and Tek cabinets as well as an assortment of plastic enclosures.

After the WD-40 loosens the old label and sticky PSA residue then a little clean-up with alcohol, Windex or Sparkle usually finishes the job. 401 also works, but sometimes seems a little harsh.

My two cents.

Regards,

Ken

On 11Jun, 2018, at 8:10 PM, Dennis Tillman W7PF <@Dennis_Tillman_W7pF> wrote:

A far too common problem I have no solution for yet:

What will remove sticker residue on Tek blue paint without harming the paint
finish?



Stay away from GOOF OFF. Its active ingredient is XYLENE, which dissolves
paint very quickly. Don't ask me how I know :(



Isopropyl alcohol is very mild on most things but it does poorly against the
sticker residue and often you have to rub the affected area to get the glue
to come off. The rubbing removes some blue paint and mars the finish so that
is no good.



Would boiling water soften the sticker residue and leave the paint alone or
would it siften the paint as well.



Suggestions are welcome.




Re: What removes sticker residue without hurting the blue paint?

Chuck Harris
 

Goo gone is not aqueous. It is more like terpene,
made from the citrus, with mineral oil added to
prevent re-adhesion of the stickum.

The mineral oil component will separate out, and if
you are using a pump type bottle, it will come out
all at once... and will not remove the label, only
make an oily mess. So, do shake well before use.

-Chuck Harris

Larry McDavid wrote:

I agree with Rick K8EZB that Goo Gone, the citrus-based product, is a good choice for
removing many labels. I let the label soak for 30 minutes (Goo Gone is aqueous so it
evaporates slowly) and then work to remove the label. If there is substantial paper
label remaining, an "orange stick" or even a fingernail can remove the paper,
followed by more soaking in Goo Gone. Finally, a soft cotton shop or kitchen towel
can remove the remaining adhesive residue. Using a typical kitchen paper towel too
vigorously can scuff the paint. I've even used cotton balls in critical areas.


Re: What removes sticker residue without hurting the blue paint?

Chuck Harris
 

Naptha, or lighter fluid does a good job, and is
mild on paints and plastics.

Hot air will often allow you to peel off a sticker
more or less intact, but will usually leave the
stickum behind... which you will still have to
remove with something like lighter fluid.

-Chuck Harris

Dennis Tillman W7PF wrote:

A far too common problem I have no solution for yet:

What will remove sticker residue on Tek blue paint without harming the paint
finish?



Stay away from GOOF OFF. Its active ingredient is XYLENE, which dissolves
paint very quickly. Don't ask me how I know :(



Isopropyl alcohol is very mild on most things but it does poorly against the
sticker residue and often you have to rub the affected area to get the glue
to come off. The rubbing removes some blue paint and mars the finish so that
is no good.



Would boiling water soften the sticker residue and leave the paint alone or
would it siften the paint as well.



Suggestions are welcome.





Re: What removes sticker residue without hurting the blue paint?

Bob Albert
 

I wonder if denatured alcohol would work.  I have used it successfully on many things.  About the only thing stronger might be acetone but that will eat the paint too.
Bob

On Monday, June 11, 2018, 8:40:39 PM PDT, G Hopper <kb7wsd@...> wrote:

One more vote: Goo gone is my go to.  I learned about it from a woman who
refurbished photographic enlargers years ago.  Mild and didn't damage
anything, but worked amazingly on adhesives and grease.  Has a pleasant
smell too.

73,
Grant
KB7WSD

On Mon, Jun 11, 2018 at 8:35 PM, David M <@DaveM> wrote:

I've used WD40 with good results.  Most paints seem to tolerate it well.
As with any old finish, rubbing will likely damage it.  I spray a small
amount of it on the sticker, let it rest for a few minutes, spray again,
and the sticker usually comes right off, leaving what's left of the
adhesive mostly dissolved.  A paper towel soaked with WD40 takes care of
the residue.
Don't know what's in WD40, or what's different from GoofOff, but, as with
almost EVERYTHING else, use at your own risk.

Dave M

On Mon, Jun 11, 2018 at 07:10 pm, Dennis Tillman W7PF wrote:


A far too common problem I have no solution for yet:

What will remove sticker residue on Tek blue paint without harming the
paint
finish?



Stay away from GOOF OFF. Its active ingredient is XYLENE, which dissolves
paint very quickly. Don't ask me how I know :(



Isopropyl alcohol is very mild on most things but it does poorly against
the
sticker residue and often you have to rub the affected area to get the
glue
to come off. The rubbing removes some blue paint and mars the finish so
that
is no good.



Would boiling water soften the sticker residue and leave the paint alone
or
would it siften the paint as well.



Suggestions are welcome.







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