Digest for sci.electronics.repair@googlegroups.com - 25 updates in 6 topics

blisca <blisca@tiscali.it>: Apr 05 09:55AM +0200

Hello
 
please,i need to repair a circular PCB board inside the rotating camera
head of a robot,a small tractor for sewage inspection.The brand is
Pearpoint,model 494/04,part of S.C.S Ex94C1001 & 1002
http://s000.tinyupload.com/?file_id=55489985001783462747
An internal short circuit,probably due to iron dust,generated heat,enough
to burn away the golden plated track and carbonize the PCB
 
Repairing it requires to redraw and rebuild the PCB,it would be good if
someone has the spare part,or the service manual,because i could do errors
in redraw the burned tracks and vias
 
Many thanks
 
Diego
 

 
---
Questa email è stata esaminata alla ricerca di virus da AVG.
http://www.avg.com
Terry Schwartz <tschw10117@aol.com>: Apr 05 05:29AM -0700

Repairing that would be problematic, because it looks like it serves as a rotating slip ring with multiple connections. You might repair the traces but it could not be smooth, the connections thru the brushes or contacts would not be steady or reliable as it rotates. A replacement is your only real option.
 
Is the original company no longer supporting this device?
 
On Thursday, April 5, 2018 at 2:56:15 AM UTC-5, blisca wrote:
blisca <blisca@tiscali.it>: Apr 05 04:19PM +0200


>> please,i need to repair a circular PCB board inside the rotating camera
>> head of a robot,a small tractor for sewage inspection.The brand is
>> Pearpoint
 
 
 
 
Hi,
 
> Repairing that would be problematic, because it looks like it serves as
> a rotating slip ring with multiple connections.
 
Yes,exactly.A correspondig PCB mounts some spring loaded spheric
contacts(i think they are also called pogo pins),sliding on the circular
tracks.
 
> Is the original company no longer supporting this device?
no spare parts availabile,product out of production since long time,but i
admit that i still have to ask to their support about the drawings
 
> You might repair the traces but it could not be smooth, the connections
> thru the brushes or contacts would not be steady or reliable as it
> rotates. A replacement is your only real option.
I completely agree,i dont know any product that i could paint even on a
perfectly flat surface,hard enough to withstand the friction
Furthermore the burned PCB could have lost insulation.
 
I started drawing an identical PCB some days ago
The problem is to get the right distances and positions of tracks and
vias,and some of them almost disappeared ,despite their function looks
trivial(unless strange crossings).
The most precise method i found was doing an accurate photo,and using the
pixel meter of a free image editor as GIMP to get the distances.
Once drawn,i will print it on a transparent sheet to check it versus the
real one
 
Thanks for your time
 
Diego
 
---
Questa email è stata esaminata alla ricerca di virus da AVG.
http://www.avg.com
Terry Schwartz <tschw10117@aol.com>: Apr 05 07:59AM -0700

Ask them for the Gerber files. Then you can send them out to be reproduced. It will be expensive because you need the "hard gold" surface finish (not ENIG) on the entire board. This is usually only used on edge connectors and is almost obsolete.
 
Can you post a picture of the other side of the board?
Jeff Liebermann <jeffl@cruzio.com>: Apr 05 08:29AM -0700


>Repairing it requires to redraw and rebuild the PCB,it would be good if
>someone has the spare part,or the service manual,because i could do errors
>in redraw the burned tracks and vias
 
The best way would be to copy the PCB photographically, and make a new
PCB. However, if you want to try repair, find some thin sheet copper.
Draw the missing traces on the copper sheet. Cut out the semi
circular sections with an Xacto knife. Glue to the existing PCB. If
you overlap the new copper to the existing gold traces, you should
have a sufficiently good connection without soldering. Stained glass
copper tape should work.
 
You can also do this with aluminum foil duct tape, but will need to do
something to improve conductivity and prevent electrolysis. For dry
(no DC) connections, I dope the sticky glue back of the tape with
graphite powder.
 
Another approach would be to totally replace the PCB with a ribbon
cable. It appears to simply provide the ability to do multiple 360
degree rotations without binding. That's a useful feature, but
probably not a necessity for sewer inspections. Build an umbilical
cable between the electronics and the camera head that replaces the
function of the board. Either provide a mechanical stop that provides
over-rotation protection or just be careful when rotating. Hopefully,
you have room inside for the umbilical.
 
Good luck.
 
--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
etpm@whidbey.com: Apr 05 09:38AM -0700


>---
>Questa email è stata esaminata alla ricerca di virus da AVG.
>http://www.avg.com
I see eleven traces in that picture. Is there room for a slip ring?
See this link: https://www.adafruit.com/product/1196
This slip ring assembly has twelve conductors rated at 240 volts and 2
amps. Twenty dollars US.
Eric
Erholt Rhein <erholtr@pobox.com>: Apr 05 12:45AM

None of the Ham FAQs have this privacy question.
http://wireless.fcc.gov/uls/index.htm?job=faq
 
Q: Can you get a USA Ham Radio license WITHOUT giving the gob'ment your SSN?
jurb6006@gmail.com: Apr 04 06:09PM -0700

Unlikely. For what reason though ? If you declare sovereignty then you are not beholden to licensing laws within reason, that is as long as you harm noone. If you are a normal citizen then it really doesn't matter, there is no way to hide if they want you. Itis a simple matter of triangulation.
 
I am not sure about if you remove yourself from social security, which is possible despite popular belief, and even misinformation on their own website and via their representatives. You then face troubles opening any new bank accounts and a few other things. And don't even register to vote if you consider yourself apart from the corporate entity.
 
Removing yourself from corporatehood is not easy and not recommended for everyone. What's more you get none of your moneys back that you paid in, like SS even though you forfeit your right to collect, and federal income taxes. And you are still a state Citizen. That is "State" citizen.
 
These are complex issues and it is very difficult to obtain good information these days. There are too many quacks that sell you their plan that will get you thrown in jail and marked as a possible threat. Not worth it for most people.
 
If you remain a citizen of the corporate United States rather than a Citizen of the united states you must give up that social security number whenever they ask for it, if you have one. Remaining a corporate citizen without on is almost impossible, if not outright impossible.
 
And why not give it up ? They probably have it anyway, or will.
Erholt Rhein <erholtr@pobox.com>: Apr 05 01:16AM

jurb6006@gmail.com wrote in
 
> These are complex issues and it is very difficult to obtain good information these days. There are too many quacks that sell you their plan that will get you thrown in jail and marked as a possible threat. Not worth it for most people.
 
> If you remain a citizen of the corporate United States rather than a Citizen of the united states you must give up that social security number whenever they ask for it, if you have one. Remaining a corporate citizen without on is almost impossible, if not outright impossible.
 
> And why not give it up ? They probably have it anyway, or will.
 
Your comments are appropriate, where the government has no business
associating your pension plan with the Ham Radio License.
 
What does a Ham Radio License have to do with my pension plan anyway?
 
It's just another case of government abuse of power.
a. They put a law in place for reason X.
b. Then they abuse their own laws for reason Y.
 
So the use of the social security number for anything other than the
pension plan is a clear abuse of the original intent of the law that was
passed.
 
They passed the law with duplicity.
 
So I would prefer to give them my real name, my real address, my real phone
number, my real birth date, my real height and weight, etc., but what on
earth does a Ham Radio License have to do with my pension plan?
 
It's a privacy violation that violates the intent of the law.
--
Yes, I know it's "voluntary" to give anyone the SSN.
Fox's Mercantile <jdangus@att.net>: Apr 04 08:23PM -0500

On 4/4/18 7:45 PM, Erholt Rhein wrote:
> Q: Can you get a USA Ham Radio license WITHOUT giving the
> gob'ment your SSN?
 
Just do it and get over yourself.
 
 
--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com
bitrex <bitrex@de.lete.earthlink.net>: Apr 04 10:38PM -0400

On 04/04/2018 08:45 PM, Erholt Rhein wrote:
> None of the Ham FAQs have this privacy question.
> http://wireless.fcc.gov/uls/index.htm?job=faq
 
> Q: Can you get a USA Ham Radio license WITHOUT giving the gob'ment your SSN?
 
If you're a US resident then who cares, the government already has your
SSN, they're the ones who gave it to you!
 
If you're a foreign operator who wants to be licensed to operate in the
US then clearly a US SSN is not a requirement, you probably have to send
them a birth certificate and proof of citizenship of some type and they
send you an FRN.
Jeff Liebermann <jeffl@cruzio.com>: Apr 04 09:54PM -0700

On Thu, 5 Apr 2018 00:45:15 +0000 (UTC), Erholt Rhein
 
>None of the Ham FAQs have this privacy question.
>http://wireless.fcc.gov/uls/index.htm?job=faq
 
>Q: Can you get a USA Ham Radio license WITHOUT giving the gob'ment your SSN?
 
No. I order to get an FCC license of any type, you need to first get
an FRN number. To obtain an FRN number from the ULS section of CORES,
you need to give the FCC your TIN, which for individuals is your SSN:
<https://www.fcc.gov/wireless/support/universal-licensing-system-uls-resources/getting-fcc-registration-number-frn>
"Taxpayer Identification Number (TIN). For individuals this
is a Social Security Number and for businesses this is an
Employer Identification Number."
 
 
--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
jurb6006@gmail.com: Apr 04 09:48PM -0700

>"It's a privacy violation that violates the intent of the law. "
 
I agree, but they do it all the time. And the people don't care just like the boiling frog.
jurb6006@gmail.com: Apr 04 09:59PM -0700

>"If you're a foreign operator who wants to be licensed to operate in the US then clearly a US SSN is not a requirement,"
 
Actually it might just work to not claim US citizenship, but there may be other ramifications.
 
The reason I do not recommend it is that the process by which you gain certain legal status which includes that of a non-taxpayer is based on accusing them of fraud in a way, and the fact that they cannot answer the charge is one of the key points.
 
Part of that is that whatever you have done and signed into thus far was because you were unaware of this fraud. To even hint at it now may well preclude your ever being able to complete the process because at a latter date they can claim that you knew and have volunteered since. That voids the whole thing.
 
And people who value privacy are not the type to burn such a bridge, so I recommend just giving them the number. Don't even use TDC. (TDC means threat, duress, coercion) That is more aptly used when forced to sign something or else suffer some consequence, like not getting a driver's license or something like that, but the OP does not intend to refuse to sign and agree to be bound by the associated regulations, he wants to omit a piece of information.
 
This is tricky, I don't claim to know all about it but I know enough for example to pull it off myself. But others have different situations and may require a different approach.
 
The people I learn about this from had hired an ex-Harvard law professor top tutor them, and he could never have given that information out in his capacity as an active member of the bar. Once retired it is a different story.
jurb6006@gmail.com: Apr 04 10:07PM -0700

>"for businesses this is an
Employer Identification Number." "
 
Hmm, he could hire himself. Maybe, I would have to look into it but quite honestly I had had enough legal in my life plus I have a pro se case coming up. That is plenty.
 
However that is information that you can ask a lawyer. It would not put him in jeopardy to tell. Main thing is, can a business get an FCC license ? Most likely. What are any base taxes involved even if there is no pay involved ? Like getting a vendor's license, you get one and never send in any money they might start asking questions.
 
I would ask a lawyer about the EIN. There is also a possibility the information is online somewhere, just watch those URLS, you want an EDU or GOV at the end. (and even that is not infallible, but it is ammo incase TSHTF)
amdx <nojunk@knology.net>: Apr 05 09:20AM -0500

>> "for businesses this is an
> Employer Identification Number." "
 
> Hmm, he could hire himself. Maybe, I would have to look into it but quite honestly I had had enough legal in my life plus I have a pro se case coming up.
Well, now you have me waiting for more info!
Mikek
Jeff Liebermann <jeffl@cruzio.com>: Apr 05 08:13AM -0700


>Hmm, he could hire himself. Maybe, I would have to look into it
>but quite honestly I had had enough legal in my life plus I
>have a pro se case coming up. That is plenty.
 
The EIN is for commercial 2-way radio business licenses. Except for
radio club licenses, all US ham licenses are issued to individuals.
 
"Who Can Lawfully Request My Social Security Number?"
<http://www.identityhawk.com/Who-Can-Lawfully-Request-My-Social-Security-Number/>
 
>However that is information that you can ask a lawyer.
 
Free legal advice:
<https://www.google.com/search?q=free+legal+advice>
 
>Main thing is, can a business get an FCC license ?
 
Yes, in a communications service appropriate for being operated by a
business. Ham radio is by definition NOT a business. Nice try.
 
>Most likely.
 
Totally unlikely.
 
>What are any base taxes involved even if there is no pay
>involved ?
 
No, because you cannot legally charge for using ham radio services.
There was quite a discussion going on about 20 years ago over whether
a ham radio operator could order a pizza via an autopatch. The
decision is more complexicated than I want to discuss.
 
>Like getting a vendor's license, you get one and never send
>in any money they might start asking questions.
 
If you get a business license, and furiously deduct everything in
sight on your taxes, but cannot demonstrate any income, the IRS
considers your activities to be a hobby, not a business. Businesses
are expected to separate their customers from their money, which a
hobby fails to do.
 
>the information is online somewhere, just watch those URLS,
>you want an EDU or GOV at the end. (and even that is not
>infallible, but it is ammo incase TSHTF)
 
I can see that you've never dealt with a lawyer. Asking a lawyer for
advice is an exercise in futility. You never get a definitive yes or
no answer. Instead, you get multiple possibilities, interpretations,
and actions, leaving you to flip a coin as to which action is the
correct one. If it later appears that your decision was not optimum
or correct, it's your fault, not the lawyers.
 
 
--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
"~misfit~" <shaun.at.pukekohe@gmail.com>: Apr 05 01:53PM +1200

Once upon a time on usenet Ragnusen Ultred wrote:
> http://i.cubeupload.com/AXV0S1.gif
 
> Q: What is the trick to get the same functionality with the Apple Map
> App?
 
The trick is to post to the right group.
--
Shaun.
 
"Humans will have advanced a long, long way when religious belief has a cozy
little classification in the DSM*."
David Melville (in r.a.s.f1)
(*Diagnostic and Statistical Manual of Mental Disorders)
bitrex <bitrex@de.lete.earthlink.net>: Apr 04 02:28PM -0400

On 04/03/2018 09:59 AM, Adrian Caspersz wrote:
> You might enjoy this?
 
> http://www.angelfire.com/electronic/funwithtubes/index.html
 
I corresponded via email with that site's owner a couple times many
years ago he was always very polite and enthusiastic and seemed glad
some younger people who weren't born yet in the "tube era" were checking
out his material
Mike Coon <gravity@mjcoon.plus.com>: Apr 04 10:11PM +0100

In article <xP8xC.35$Pz2.30@fx10.iad>, bitrex@de.lete.earthlink.net
says...
> years ago he was always very polite and enthusiastic and seemed glad
> some younger people who weren't born yet in the "tube era" were checking
> out his material
 
See also (if in UK): http://www.tnmoc.org/news/upcoming-events/valve-
workshop-returns
 
Mike.
John Robertson <spam@flippers.com>: Apr 04 02:15PM -0700

On 2018/04/03 6:59 AM, Adrian Caspersz wrote:
> You might enjoy this?
 
> http://www.angelfire.com/electronic/funwithtubes/index.html
 
I need MORE interesting sites to visit? Well, this is certainly one of them!
 
Thanks,
 
John :-#)#
 
--
(Please post followups or tech inquiries to the USENET newsgroup)
John's Jukes Ltd.
MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
(604)872-5757 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."
jurb6006@gmail.com: Apr 04 01:12PM -0700

>"Probably gave up after you hijacked the thread to complain how
the entire world is out to get you. "
 
I didn't do that.
Terry Schwartz <tschw10117@aol.com>: Apr 04 11:51AM -0700

He's probably replaced the CMOS battery at least 3 more times now, since the OP was in 1999.
tabbypurr@gmail.com: Apr 04 12:17PM -0700

On Wednesday, 4 April 2018 19:51:36 UTC+1, Terry Schwartz wrote:
> He's probably replaced the CMOS battery at least 3 more times now, since the OP was in 1999.
 
and the computer.
jurb6006@gmail.com: Apr 04 01:08PM -0700

> On Wednesday, 4 April 2018 19:51:36 UTC+1, Terry Schwartz wrote:
> > He's probably replaced the CMOS battery at least 3 more times now, since the OP was in 1999.
 
> and the computer.
 
An old Packard Smell like that you would keep the battery and replace the computer.
You received this digest because you're subscribed to updates for this group. You can change your settings on the group membership page.
To unsubscribe from this group and stop receiving emails from it send an email to sci.electronics.repair+unsubscribe@googlegroups.com.

No Response to "Digest for sci.electronics.repair@googlegroups.com - 25 updates in 6 topics"

Post a Comment