Monitor screen width a little TOO wide

[pocketpal]

Hello everybody!  This is my first post.  I have searched through the forums, but cannot find an answer to my problem.

I have an A.L.S. Marketing (same as Pentranic) model #1425 25" arcade monitor.  I have hooked it up to my ArcadeVGA card, and everything works great, except the screen width is a little too large -- even with the H-Width knob on the control panel turned all the way down.  Is there some other way to adjust this?  If not, am I hurting the monitor by running it this way?

[MonitorGuru]

OT: Isn't ALS the maker of all of those old days videogame cartridge storage wall racks and trays? -- The one with the weird bird as the logo?   I didn't know they licenced monitors as well?

Back on topic: You probably have to adjust the horizontal scan rate on your video card.  If you were using AdvanceMame, you can do all of that in the config program. I havn't ever used the ArcadeVGA card, but presume they have some tweaking software to adjust the scan rates to fit within your monitor's range.

Otherwise you may (also?) need a cap kit, but usually that causes too little horizontal width.

[pocketpal]

OT: Isn't ALS the maker of all of those old days videogame cartridge storage wall racks and trays? -- The one with the weird bird as the logo? I didn't know they licenced monitors as well?

I have a sneaking suspicion that they are not related....

As for the tweaking program, I can't find anything like that available for, or that came with, the ArcadeVGA card.  I should also mention that this is a brand new monitor, so I don't believe a cap kit is in order.  I was expecting that there is probably some adjustment on one of the PCB's.  Although I don't see anything obvious, there are several adjustment-looking things that are not clearly marked.

[dabone]

Check the main pcb for a standard width coil.


It will probally have a coil in addition to the remote adjustment.


Later,
dabone

[pocketpal]

Yeah, thanks dabone!  I had wondered about that, but it wasn't labeled, and I had no idea if I had any business messing with it.  I ran the Nokia test, adjusted the coil, and that took care of my width issue.  Then I noticed the circles in the top two corners of the test image were perfectly round looking, but the bottom ones were tall ovals.  I knew there was a V-LINES pot on the main pcb which I had never messed with, so I turned that (along with altering V-POS and V-SIZE on the control panel) until they were all round.  Now when playing games, I notice that the very top (an inch or so) of the screen is darker than the rest.  I hadn't ever noticed that before, so I wonder if I just introduced that problem....?

Sorry for being such a pain....this monitor stuff is just one thing after another.