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Author Topic: How do solder these ground pins? (Help a newbie please!)  (Read 23182 times)

bencao74

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Re: How do solder these ground pins? (Help a newbie please!)
« Reply #15 on: July 25, 2012, 10:33:24 AM »
I`ve lost a good link ;)

But for first just solder them together. Should work. On the UMSA I use 4060 IC plus some elkos. But this is a overkill for your needs.
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c0dehunter

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Re: How do solder these ground pins? (Help a newbie please!)
« Reply #16 on: July 25, 2012, 07:37:02 PM »
Quote from: bencao74 on July 25, 2012, 10:33:24 AM
I`ve lost a good link ;)

But for first just solder them together. Should work. On the UMSA I use 4060 IC plus some elkos. But this is a overkill for your needs.

Hello bencao74,
Thanks for your message, I really appreciate it! Yes, I am going to just solder them and see what happens. Another option is that I have a good, unused 25pin (one end male, other is female) so I can cut it and connect (and match!) its wires to a cut ready made VGA cable.

 
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c0dehunter

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Re: How do solder these ground pins? (Help a newbie please!)
« Reply #17 on: August 01, 2012, 05:03:03 AM »
OK, I found a local solder-guy who make me this cable, but when I connected it, this is what I got:

http://www.flickr.com/photos/48901682@N02/7688576136/in/photostream/lightbox/
http://www.flickr.com/photos/48901682@N02/7688574312/in/photostream/lightbox/

In reality, the above image should look like this:

http://www.flickr.com/photos/48901682@N02/7688572754/in/photostream/lightbox/

But looks like this:

http://www.flickr.com/photos/48901682@N02/7688574312/in/photostream/lightbox/

These are the images of the 15pin (VGA) solder work:
http://www.flickr.com/photos/48901682@N02/7688571564/in/photostream/lightbox/
http://www.flickr.com/photos/48901682@N02/7688570620/in/photostream/lightbox/
http://www.flickr.com/photos/48901682@N02/7688570024/in/photostream/lightbox/
http://www.flickr.com/photos/48901682@N02/7688569412/in/photostream/lightbox/


These are the images of the 25pin (Sony PVM-2030) solder work:
http://www.flickr.com/photos/48901682@N02/7688568768/in/photostream/lightbox/
http://www.flickr.com/photos/48901682@N02/7688568128/in/photostream/lightbox/
http://www.flickr.com/photos/48901682@N02/7688566900/in/photostream/lightbox/
http://www.flickr.com/photos/48901682@N02/7688566216/in/photostream/lightbox/

Both connectors together:
http://www.flickr.com/photos/48901682@N02/7688565432/in/photostream/lightbox/
http://www.flickr.com/photos/48901682@N02/7688577078/in/photostream/lightbox/

Diagram
http://www.flickr.com/photos/48901682@N02/7588180386/in/photostream/lightbox/


Everything seems to be in order, but I am not sure why I get a distorted image. I even tried it with another computer (which has a compatible Soft 15Khz video card) and had the exact result, so it must be the wiring.

Any suggestions are greatly appreciated.

Thanks.
 
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level42

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Re: How do solder these ground pins? (Help a newbie please!)
« Reply #18 on: August 01, 2012, 09:44:03 AM »
My first suggestion is to put the pics directly in the posting....when you have the picture on Flickr, click Share, then click Grab the HTML/BBC code. Then select all the text in the box and copy that in the thread, like this:


001 by c0dehunter, on Flickr

This will show the pic right in the thread which makes it a lot easier to know what you mean... :)

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level42

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Re: How do solder these ground pins? (Help a newbie please!)
« Reply #19 on: August 01, 2012, 09:47:54 AM »
Is the picture stable like that or does it also move ?

It definitly is a sync issue. Did you try adjusting the horizontal sync of the monitor ?
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level42

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Re: How do solder these ground pins? (Help a newbie please!)
« Reply #20 on: August 01, 2012, 09:57:25 AM »
Juat checked the manual and it seems you only have a horizontal control for DIGITAL RGB, not Analog, but I would try it anyway.

Also make sure the switch on the lower back panel "Sync on Green" if OFF....

(See manual page 6 andp 7)
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bencao74

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Re: How do solder these ground pins? (Help a newbie please!)
« Reply #21 on: August 01, 2012, 10:06:06 AM »
Quote
These are the images of the 15pin (VGA) solder work:
http://www.flickr.com/photos/48901682@N02/7688571564/in/photostream/lightbox/
http://www.flickr.com/photos/48901682@N02/7688570620/in/photostream/lightbox/
http://www.flickr.com/photos/48901682@N02/7688570024/in/photostream/lightbox/
http://www.flickr.com/photos/48901682@N02/7688569412/in/photostream/lightbox/

I `m not sure about the connector. You referenced in the schematic a VGA DSUB 15 hd connector with rgb on 1,2,3. Your soldered one has the rgb on 3,4,5, nor?

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c0dehunter

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Re: How do solder these ground pins? (Help a newbie please!)
« Reply #22 on: August 01, 2012, 10:42:26 AM »
Quote from: Level42 on August 01, 2012, 09:47:54 AM
Is the picture stable like that or does it also move ?

It definitly is a sync issue. Did you try adjusting the horizontal sync of the monitor ?

Thanks for your message. The picture moves a bit and as you see is distorted.

when it is OFF, I get NO picture at all. When I turn it to ON, I get the image, but as you can see, it is distorted.
« Last Edit: August 01, 2012, 10:52:42 AM by c0dehunter »
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level42

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Re: How do solder these ground pins? (Help a newbie please!)
« Reply #23 on: August 01, 2012, 10:27:17 PM »
If you have the switch OFF and NO picture then the monitor is NOT getting the Sync signal.

When you switch it to ON it will try to Sync to the Green signal, but because this doesn't HAVE sync included, you see what you see now....

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level42

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Re: How do solder these ground pins? (Help a newbie please!)
« Reply #24 on: August 01, 2012, 11:04:56 PM »
@Bencao: remember that this is at the video card side, not the monitor side, so the pins are soldered correctly.

One idea:
I see you didn't connect pin 10 of the VGA connector. This is the GND for both Sync signals. Simply bridge that to the other grounds and see if that helps.

The switch "Sync on Green" really MUST be off.

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c0dehunter

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Re: How do solder these ground pins? (Help a newbie please!)
« Reply #25 on: August 02, 2012, 06:21:48 AM »
OK, I manage to have the person who originally made me the cable, also make the small circuit and implement it right in the 25pin housing, and guess what? It WORKS! It is a beauty to behold! (although compared to my 13" Commodore 1084S-D1, it would take time to adjust to its nice 20" size!)

Thank you all for your kind comments which made this project a success! I will post images shortly!

Thanks again.
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level42

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Re: How do solder these ground pins? (Help a newbie please!)
« Reply #26 on: August 02, 2012, 09:10:58 AM »
What circuit did you add ? I guess from reading your previous posts a bit better it is a sync combiner.

The picture must be very good this is a broadcast quality monitor :)
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c0dehunter

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Re: How do solder these ground pins? (Help a newbie please!)
« Reply #27 on: August 04, 2012, 03:51:06 AM »
Quote from: Level42 on August 02, 2012, 09:10:58 AM
What circuit did you add ? I guess from reading your previous posts a bit better it is a sync combiner.

The picture must be very good this is a broadcast quality monitor :)

I ended up using this diagram:




At the following http://www.geocities.ws/podernixie/htpc/cables-en.html



It looks great and all but the screen is a bit off, and there is no knobs to adjust the position or the shape of the picture.

How do I open this monitor up for fine tuning?

Thanks.



Best,
c0dehunter
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c0dehunter

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Re: How do solder these ground pins? (Help a newbie please!)
« Reply #28 on: August 09, 2012, 09:02:16 AM »
Here are the screenshots:


Geometry is OFF 01 by c0dehunter, on Flickr
As you can see, the red markers on top, right and bottom are missing, so the geometry needs to be adjusted.


Geometry is OFF 02 by c0dehunter, on Flickr
Again it needs adjustment.


Geometry is OFF 03 by c0dehunter, on Flickr

I would like to adjust the "bent" screen on the edges.

Are there images of a PVM opened? I can only see 4 screws connecting the back panel. Any help would be greatly appreciated!
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level42

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Re: How do solder these ground pins? (Help a newbie please!)
« Reply #29 on: August 09, 2012, 02:49:41 PM »
The bent edges may be adjusted with a pincushion control pot, if it has one.

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