what is wrong with this picture?

c0dehunter · Post by **c0dehunter** » Wed Aug 01, 2012 3:11 am

rolins · Post by **rolins** » Wed Aug 01, 2012 5:09 am

Looks like the cable is wired for analog RGB which fine for old consoles, but VGA is digital RGB. I've never used that monitor before but gamesx has pinout - http://gamesx.com/wiki/doku.php?id=av:pvm-2030

In the diagram is says pin9 is analog/digital RGB select. So on the DB25 connector, try connecting pin 9 to GND and see if that helps.

While you're at double check all the GND are connected. Does that monitor have v-hold or h-hold?

blizzz · Post by **blizzz** » Wed Aug 01, 2012 8:25 am

rolins wrote:Looks like the cable is wired for analog RGB which fine for old consoles, but VGA is digital RGB.

VGA output from a PC (and any other normal device) is always analogue.

gray117 · Post by **gray117** » Wed Aug 01, 2012 12:20 pm

Ergh ... not sure what's going on here; those blanking and high state on 9 may be confusing things.

As they suggest in http://www.dragonslairfans.com/smfor/in ... ic=3753.15 it looks like you may have to combine the sync for a 15khz signal... and feed into 3.

...it looks like you're so close...

I assume your set is in rgb mode so don't need pin 10 connected up... on the manual controls on the front it can be forced into rgb mode and stays there right?

... If so I think there's two things I would try:

1. Probably my suspect looking at the picture:

To combine hv sync
method i) You could try disconnecting 11 and joining it onto 3... This isn't the correct way of combining syncs but may work.
method ii) To combine the sync properly something like this is needed; http://www.epanorama.net/circuits/vga2rgbs.html
There are some cables floating around ebay that might do have such a circuit in for you [someone else know which?] the only issue will be which pin the H+V -> C sync signal then connects up to on those cables (the thinking being you could use this between the comp and your custom cable).

2. Check it thinks it's receiving an analogue signal.
Does 9 need to be high state? ... http://gamesx.com/wiki/lib/exe/fetch.ph ... _cmptr.jpg ... Perhaps worth looking into.

c0dehunter · Post by **c0dehunter** » Thu Aug 02, 2012 4:22 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OK, I manage to have the person who originally made me the cable, also make the small circuit and implement it right in the 25pin housing, and guess what?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.

c0dehunter · Post by **c0dehunter** » Thu Aug 09, 2012 8:04 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!

ryu · Post by **ryu** » Thu Aug 09, 2012 9:00 am

if this is closed up the same way a 2130 is you'll have 4 screws around the back of it close to the tube, and one at the very back holding the back of the encasement and the chassis together. make sure you don't forget that one (if there is one).

these pvm's usually have pcbs on the left and right behind the tube. the pots for geometry adjustment are on the left pcb (when from infront of the monitor).

gray117 · Post by **gray117** » Thu Aug 09, 2012 10:27 am

You can probably adjust nearly everything except convergence via a service menu. Afraid I don't know the button combo offhand. You'll probably need a remote to get service menu on the pvm...

Although apparently from skirting a couple of oother forums you might try degauss and enter on the front panel. Or hold enter, press menu.

Otherwise popular sony remote combos:
http://www.servicetv.org/laboratorio/so ... cesony.htm

What seems to be a very thorough breakdown of service modes:
http://www.avsforum.com/t/531494/the-so ... iscoveries

c0dehunter · Post by **c0dehunter** » Thu Aug 09, 2012 4:15 pm

To be honest, I am not 100% satisfied with the image quality of my SONY PVM-2030.

1) Compared to my 13" Commodore 1084S-D1, the scan-lines (which I love to have, don't get me wrong) are STRONGLY pronounced, and the actual R, G, B pixels standout prominently: Maybe this phenomenon is a feature of the Trinotron tube, but the image quality of my 1084S-D1 is much sharper/smoother. (Maybe it is the size of the 1084S-D1, but everything seems sharper.)

2) I managed to open my PVM-2030 and adjusted many settings, but I still could not get to produce the image that I came to love and adore with my 1084S-D1.

3) Using my SONY PVM-2030, when I launch different emulators, the image is completely off, so I have to spend time and manually adjust for each individual emulator. On my 1084S-D1, amazingly they stay pretty much centered and the way I like, (not to mention that 1084S-D1 features the adjusting knobs in the back for easy access, unlike the PVM-2030, which force me to leave it opened all the times for constant fine tuning.)

Obviously, this is a very subjective matter, but in my opinion, my 1084S-D1 is capable of producing a more sharper image. I will post some images to prove my observations.

After all the time and money spent, I guess I am back to my trusty Commodore 1084S-D1 for retro gaming emulation, but I think it was worth the try.

ELabit · Post by **ELabit** » Thu Aug 16, 2012 6:55 pm

I have a similar issue with my 2030 I just picked up. The image is bent on the side and off centered. I opened it up and looked on the PCBs for the adjustment pots. Does anyone know it that is the correct way to adjust the image or if it was in a service menu?

shmups.system11.org

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