Fine pitch trace repair

[Jeff Liebermann]

On Sat, 8 Dec 2018 13:13:26 -0500, Ralph Mowery
<rmowery28146@earthlink.net> wrote:

The ones that used a computer
monitor did not work because I could not get the hand/eye to co-ordinate
looking out and working down. Seems like most magnifying glasses had to
be too close to the work to do any soldering.

Question: When typing on a computer keyboard, do you watch your hands
or watch the characters on the screen?

The reason I ask is that I've noticed that those who watch their hands
tend to have problems looking through a microscope or magnifier while
working. I do fairly well, but had some initial problems trying to
become accustomed to a HUD (heads up display). It still takes me
about 10 minutes to adjust to the HUD, and about 30 mins to recover
(i.e. not stumble or smash into things) after returning to normal
vision. I have similar problems working under a microscope, but the
adjustment and recovery times are much less.

Incidentally, if you have an Amscope microscope camera, their free
Windoze v3.7 software works quite nicely:
<https://www.amscope.com/software-download>
However, it won't recognize anything else besides Amscope hardware.

Bought an Amscope 4000z or could be a 400z for around $ 200 shipped and
it works very well for me. There is about 6 ot 8 inches of distance
from the bottom lense to the work piece. I am sure there are lots
better ones out there ,but for a hobby and not business, it is fine for
me.

This one? The SE400-Z seems to be quite popular in the repair biz:
<https://www.amscope.com/10x-20x-led-binocular-stereo-microscope-boom-arm-with-gooseneck-light.html>
9 inch (229 mm) working distance. Nice.

Various videos featuring the Amscope SE400-Z
<https://www.youtube.com/results?search_query=Amscope+SE400-z>

Also, I have a few of these borescope or endoscope cameras in 8mm:
<https://www.ebay.com/itm/8mm-WIFI-Endoscope-Borescope-Inspection-camera-Scope-Tube-Waterproof-for-Iphone/192130852197>
I use them mostly for looking down holes, tubing, and hard to see
places. The 8mm flavor has 640x480 native resolution, which is much
better than the lower resolution found in the smaller diameters. There
are also version with a "stiff" cable, which I've found quite useful.
However, the apps all suck, the construction marginal, the Hi-Fi and
BT versions are buggy, but for the price, all this can be tolerated.
I thought it might be useful for soldering, with the camera strapped
to my hand, but the focal length and depth of field (focusing range)
were both unsuitable.

--
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

 

[The Real Bev]

On 12/08/2018 03:15 PM, bitrex wrote:

On 12/08/2018 06:01 PM, bitrex wrote:
On 12/08/2018 01:13 PM, Ralph Mowery wrote:
In article <zoJOD.721878$SN2.241326@fx38.iad>, user@example.net says...

Thanks, I managed to pull it off by scraping away the mask, then lot of
flux, tinning, and tiny strand of wire method. Patched up the third
trace in from the bottom and video card boots into Windows now and
checks out OK, runs shader tests etc. as it should.

At age 40 I still test about 20/20 in my right eye, the left was that
way too at one time but worse now, but was able to nail the positioning
with tweezers and a fine tipped iron freehand, pirate-style this time.

I should probably invest in a good microscope, never needed corrective
glasses so far in life but check back at 45.



Glad you got it going.

I could see close up very well and not so great at a distance.
Somewhere around 40 my close up started going, so bifocals for me. Now
I see better at a distance,but not so good up close at 68.

I messed around with several inexpensive devices and never could get
much out of them for the PC and SMD work. The ones that used a computer
monitor did not work because I could not get the hand/eye to co-ordinate
looking out and working down. Seems like most magnifying glasses had to
be too close to the work to do any soldering.

Bought an Amscope 4000z or could be a 400z for around $ 200 shipped and
it works very well for me. There is about 6 ot 8 inches of distance
from the bottom lense to the work piece. I am sure there are lots
better ones out there ,but for a hobby and not business, it is fine for
me.


I found that a cell phone with a "magnifying glass" app that uses the
rear? front? whatever camera it is that isn't on the display side, to
project a magnified image to display, and a set of these:

https://www.amazon.com/gp/product/B01MTWLF2Q?pf_rd_p=c2945051-950f-485c-b4df-15aac5223b10&pf_rd_r=G6E38TPW6N236D8RSCKH

They wanted $10 for one of those at a yard sale, but I didn't want it
that much :-(

Makes a pretty decent expedient "microscope." Clamp the work piece in
the lower grips horizontally, and then most phones are lightweight and
thin enough nowadays that the upper grips will clamp it above, then peer
into the display. The camera LED makes a nice flashlight when left on
continually (though really drinks the battery.)

If you can hold a jeweler's loupe over the camera with two fingers while
you operate the phone/camera with whatever other fingers are available,
you can get a pretty good shot.

https://photos.app.goo.gl/v5PwuC9ti6yMrqGf8

Left is a 14x ophthalmologist's magnifying lens. Right is a 8x
jeweler's loupe. Motorola Mogo G5plus.

The ophthoglasses are really expensive. This one was $125 used
somewhere on line. A used 20D is $250. I got it for a buck at a yard sale.

It really gripes me that the camera is too far from the edge to permit
use of those cute little clip-on lenses you can get on ebay. I had some
for a previous camera, and you really need to use a tripod with the
macro lens and the field of view is really tiny.

sort of like this (though the grippers are reversed here from what's
ideal, this was an early experiment

https://www.dropbox.com/s/i4b2on7yy1n9u14/Photo%20Dec%2008%2C%202%2019%2007%20PM.jpg?dl=0

--
Cheers, Bev
"Tell someone you love them today, because life is short.
But scream it at them in Klingon, because life is also
terrifying and confusing." -- D. Moore

 

[Ralph Mowery]

In article <b25p0etqdeqtcs9o6nv171blrhmooqa23p@4ax.com>,
jeffl@cruzio.com says...

Question: When typing on a computer keyboard, do you watch your hands
or watch the characters on the screen?

The reason I ask is that I've noticed that those who watch their hands
tend to have problems looking through a microscope or magnifier while
working. I do fairly well, but had some initial problems trying to
become accustomed to a HUD (heads up display). It still takes me
about 10 minutes to adjust to the HUD, and about 30 mins to recover
(i.e. not stumble or smash into things) after returning to normal
vision. I have similar problems working under a microscope, but the
adjustment and recovery times are much less.

Incidentally, if you have an Amscope microscope camera, their free
Windoze v3.7 software works quite nicely:
https://www.amscope.com/software-download
However, it won't recognize anything else besides Amscope hardware.

Bought an Amscope 4000z or could be a 400z for around $ 200 shipped and
it works very well for me. There is about 6 ot 8 inches of distance
from the bottom lense to the work piece. I am sure there are lots
better ones out there ,but for a hobby and not business, it is fine for
me.

This one? The SE400-Z seems to be quite popular in the repair biz:
https://www.amscope.com/10x-20x-led-binocular-stereo-microscope-boom-arm-with-gooseneck-light.html
9 inch (229 mm) working distance. Nice.

Various videos featuring the Amscope SE400-Z
https://www.youtube.com/results?search_query=Amscope+SE400-z

Also, I have a few of these borescope or endoscope cameras in 8mm:
https://www.ebay.com/itm/8mm-WIFI-Endoscope-Borescope-Inspection-camera-Scope-Tube-Waterproof-for-Iphone/192130852197
I use them mostly for looking down holes, tubing, and hard to see
places. The 8mm flavor has 640x480 native resolution, which is much
better than the lower resolution found in the smaller diameters. There
are also version with a "stiff" cable, which I've found quite useful.
However, the apps all suck, the construction marginal, the Hi-Fi and
BT versions are buggy, but for the price, all this can be tolerated.
I thought it might be useful for soldering, with the camera strapped
to my hand, but the focal length and depth of field (focusing range)
were both unsuitable.

--

For the most part I look at the screen and not my hands or the keyboard.
I am not that much of a touch typist. I can do the letters and a few
common punctuations,but have to look for some of the other symbles. I
never look at the mouse once I find it and get it in my hand.

Yes, it is the Amscope SE400Z. I think the last letter tells what
lenses come with it. Mine came with a 10x and 20x lense. I almost
always use the 10x lense. I bought a 5x but found the one i got did
not seem to have a large a field of view as the 10x.

I don't have any problem at all looking through the scope and working.
AT 68 I do not seem to have any major problems with the shakes.

I think that scope is about the best in the price range for me as I am
just doing SMD and such as a hobby. Just as I bout a $ 60 or so hot air
rework station from China that has the hot air wand and soldering
pencil. If I was using the equipment to make money,I would get something
better.

There is a fellow on youtube (Louis Rossman) that works on Apple
computers and at one time he was pushing that scope for the price. I
think he uses the same brand now,but with a different modle. For one
thing he usse the camera a lot for his speeches on youtube, I don't
have any use for the camera. His newer scopes have a way of mounting
the camera where he can still see through both lenses and a 3 rd lense
for the camera.

 

[Jeff Liebermann]

On Sun, 9 Dec 2018 10:14:11 -0500, Ralph Mowery
<rmowery28146@earthlink.net> wrote:

For the most part I look at the screen and not my hands or the keyboard.
I am not that much of a touch typist. I can do the letters and a few
common punctuations,but have to look for some of the other symbles. I
never look at the mouse once I find it and get it in my hand.

Thanks for the info. It's about the same for me. The common
characters I can type without looking. The shifted characters require
my looking at the keyboard.

Yes, it is the Amscope SE400Z. I think the last letter tells what
lenses come with it. Mine came with a 10x and 20x lense. I almost
always use the 10x lense. I bought a 5x but found the one i got did
not seem to have a large a field of view as the 10x.

I rather prefer adjustable power in the head (0.7x to 3x) as in the
Bausch and Lomb scopes. I have a variety of eyepieces but WF10X is
what works best for PCB work.

I don't have any problem at all looking through the scope and working.
AT 68 I do not seem to have any major problems with the shakes.

I'm at 70. No shakes. However, I do have some problems adjusting to
working under the microscope or HUD. I probably need more practice.

I think that scope is about the best in the price range for me as I am
just doing SMD and such as a hobby. Just as I bout a $ 60 or so hot air
rework station from China that has the hot air wand and soldering
pencil. If I was using the equipment to make money,I would get something
better.

I have the bad habit of buying used test equipment and tools. None of
my microscopes were purchased new. A few of my objective lenses and
eyepieces were purchased new, but most came with the used scopes. If
I were still doing this professionally, I would not have time to do
the necessary repairs on the used equipment and probably would have
bought something that was ready to use.

There is a fellow on youtube (Louis Rossman) that works on Apple
computers and at one time he was pushing that scope for the price.

"Amscope SE400-z microscope, a must have tool for repair technicians."
<https://www.youtube.com/watch?v=m4LaZsS5V7s> (7:45)

I
think he uses the same brand now,but with a different modle. For one
thing he usse the camera a lot for his speeches on youtube, I don't
have any use for the camera. His newer scopes have a way of mounting
the camera where he can still see through both lenses and a 3 rd lense
for the camera.

In the above video, he uses his Android phone through one eyepiece. He
has some other scopes, one of which is a trinocular microscope, which
has a third tube for the camera (but less working range).

For photos, I have one of these:
<https://www.amscope.com/cameras/0-3-mega-pixel-usb-live-video-microscope-imager-digital-camera.html>
I should have bought one with a 0.5x lens, but decided to go cheap.
Big mistake because the image width is about half the width as viewed
through the eyepiece.


--
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

 

[three_jeeps]

On Saturday, December 8, 2018 at 11:43:27 PM UTC-5, Jeff Liebermann wrote:

On Sat, 8 Dec 2018 13:13:26 -0500, Ralph Mowery
Also, I have a few of these borescope or endoscope cameras in 8mm:
https://www.ebay.com/itm/8mm-WIFI-Endoscope-Borescope-Inspection-camera-Scope-Tube-Waterproof-for-Iphone/192130852197
I use them mostly for looking down holes, tubing, and hard to see
places. The 8mm flavor has 640x480 native resolution, which is much
better than the lower resolution found in the smaller diameters. There
are also version with a "stiff" cable, which I've found quite useful.
However, the apps all suck, the construction marginal, the Hi-Fi and
BT versions are buggy, but for the price, all this can be tolerated.

I've used a few similar borescopes...the resolution of 640x480 is OK for seeing what is there but beyond that, fairly useless. The image distortion bothered me quite a bit as well.
Having said that, do you know of any produce with a higher resolution and better app?

 

[Jeff Liebermann]

On Mon, 10 Dec 2018 09:06:52 -0800 (PST), three_jeeps
<jjhudak@gmail.com> wrote:

On Saturday, December 8, 2018 at 11:43:27 PM UTC-5, Jeff Liebermann wrote:
On Sat, 8 Dec 2018 13:13:26 -0500, Ralph Mowery
Also, I have a few of these borescope or endoscope cameras in 8mm:
https://www.ebay.com/itm/8mm-WIFI-Endoscope-Borescope-Inspection-camera-Scope-Tube-Waterproof-for-Iphone/192130852197
I use them mostly for looking down holes, tubing, and hard to see
places. The 8mm flavor has 640x480 native resolution, which is much
better than the lower resolution found in the smaller diameters. There
are also version with a "stiff" cable, which I've found quite useful.
However, the apps all suck, the construction marginal, the Hi-Fi and
BT versions are buggy, but for the price, all this can be tolerated.

I've used a few similar borescopes...the resolution of 640x480 is OK
for seeing what is there but beyond that, fairly useless. The image
distortion bothered me quite a bit as well.
Having said that, do you know of any produce with a higher resolution
and better app?

Unfortunately, I'm going to have a high resolution endoscope used on a
very sensitive part of my anatomy tomorrow at the local surgery
center. I might ask the doctor for his favorite model, but suspect
he'll ignore me claiming that I'm drugged or delirious.

This looks fishy, but might be for real. 9mm dia (instead of the
usual 8mm) and 2megapixels in 1600x1200 with a 1/6th inch imager.
<https://www.newegg.com/Product/Product.aspx?Item=0XR-00BA-00024>

Compare with the real thing (for $4,000 and up):
<https://www.stryker.com/us/en/endoscopy.html>
<https://www.stryker.com/us/en/portfolios/medical-surgical-equipment/surgical-visualization.html>

I've found the Android and iPhone imaging software to be dismal or
worse. All that I've tried will crash with the slightest provocation.
Accidentally disconnecting the camera for even milliseconds often
requires a forced reboot. I have this bookmarked for later testing.
Might be worth trying:
<http://www.oasisscientific.com/downloads.html>

Incidentally, the best high resolution photos I've done were with a
commodity digital camera, junkbox optics, and a commercial endoscope.
I make the adapter out of plastic plumbing parts turned down to size
on my drill press. Ugly, but amazingly useful. Something bolted onto
a smartphone might produce decent results:
<https://www.endoscope-i.com>


--
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