WG D7700 Issue - Did I just kill it w/ stupidity?

[daskrabs]

N00b here. Just bought a new WG D7700 from Happ. I did something heroically stupid.

I had the monitor hooked up to a PC w/ ArcadeVGA via the Ultimarc VGA Breakout cable. For power, I cut the end off of the AC molex and spliced in a PC power cable. This went into a surge protector. I accidentally connected green to black, and vice versa. The PC was off. When I powered up the monitor, it blew the surge protector, and almost tripped a breaker in my apartment.

So, I changed black to black, and green to green, and it powered up fine on a new surge protector. I can get an onscreen menu, but no picture. The PC boots fine. I can hear the monitor trying to change resolutions as the PC boots up, but it never shows a picture.

Did I damage the monitor? Or is there something I need to adjust to get a picture on the monitor?

[qrz]

cold ground was connected directly to the ac line ...ouch !   
hopefully, the damage is minor
print : http://www.wellsgardner.com/pdf/Schematics/12192_WG_D7700_R10_03.pdf

verify each secondary voltage off t501. if ok , then check G2 on the crt ( should be somewhere between 200-500v)
if absent, check r880 or the the Hout is NOT functional . then check Q220, driver Q217 and associated circuitry....
possible corrupted data on EEPROM  IC702. 

[daskrabs]

Thanks for the reply, but your answer is a bit outside my scope. I barely know how to use a multimeter. Should I just find a monitor tech locally?

I should add that the ArcadeVGA is giving the monitor 15.3KHz horizontal and 49Hz vertical according to the OSD.

[MonMotha]

OSD works, so the monitor is mostly working (you've got deflection, most of the voltage rails must be up, final video amp is working).

Have you tried other sources?  I'm guessing the monitor will accept standard PC VGA (640x480p) if you just want to hook it up to another PC.  That will at least eliminate that variable.

Try turning up brightness/contrast in the OSD.  Those settings may have just gotten futzored.

[qrz]

"futzored" ??  now thats a high tech term.     i'm gonna add that one !   

and i guess i didn't read ur post very well - should have seen that u HAD  "On Screen Display"
gonna have to stop responding to posts when so tired 

 OSD bypasses the usual video processing . so yes, double check settings ...
sometimes, it doesn't take much to corrupt data

[daskrabs]

Thanks guys. I tried using my nvidia 9400GT card in my desktop system to drive the monitor, but the monitor does not like 640x480@60Hz, which is the lowest rez i can do. "Out of Range." So, when I get home, I'm gonna hook a DVI > VGA adapter up to the DVI of the ArcadeVGA, which I know does 320x240, and I'll let you know. My guess at this point is the VGA port is bad on the ArcadeVGA, but we'll see.

[newmanfamilyvlogs]

The switching of green/black connected the hot to the ground... I bet that did shunt voltage straight into the ground on the video card.

I killed a sound card in a similar manner one time when i was driving the Horz/Vert coils on a CRT to produce an oscilloscope effect and connected the ground to the wrong lead.

[MonMotha]

Thanks guys. I tried using my nvidia 9400GT card in my desktop system to drive the monitor, but the monitor does not like 640x480@60Hz, which is the lowest rez i can do. "Out of Range." So, when I get home, I'm gonna hook a DVI > VGA adapter up to the DVI of the ArcadeVGA, which I know does 320x240, and I'll let you know. My guess at this point is the VGA port is bad on the ArcadeVGA, but we'll see.

Hum, indeed, specs say it's standard res only.  I'm not sure I've ever seen a digital monitor that was single resolution only.  There's a nifty little tool called "Soft15kHz" that hacks up the registry on Windows to force 640x480 interlace and 320x240 progressive on many common video cards that you can try if you want.  Of course, a real, known working arcade board would be a good test platform.

[lilshawn]

why don't we test this the other way around... hook a regular computer monitor up to the supposedly "toast" video card and see if you get something.

[MonMotha]

why don't we test this the other way around... hook a regular computer monitor up to the supposedly "toast" video card and see if you get something.

Well, if it is in fact running standard res (as an ArcadeVGA will do unless you go out of your way to make it not do so), then the PC monitor will just do the "sync out of range" thing as that's too low.  The D7700 arcade monitor seems to be indicating that synchronization signals are present at ~15kHz, so something's being output, but there might be no video (just sync).

Oh, and I'm glad somebody likes the term "futzored".  I think I may have made that one up some time ago.  I certainly don't remember hearing it from anyone else.  Yes, it's highly technical.  Make sure you only use it in the appropriate circumstances (and be careful saying it!).

[daskrabs]

Here's the latest:

Connected VGA port to regular PC monitor: 112.7KHz Horiz, 0.0 HZ vertical.

Tried a VGA adapter on the DVI port to the arcade mon, no signal.

I can't do Soft15KHz right now because I have no supported hardware. I might be able to borrow a card from work though though.

[lilshawn]

112.7KHz Horiz, 0.0 HZ vertical.

that aint' right!

absolutely no vertical sync signal?? sounds futzored to me! swap out that cable to be sure if you can.

[daskrabs]

I got the D7700 working with a different video card (ATI X1300) and soft15khz. It looks great! The only thing I cannot do is run MAME at less than 640x480@60Hz, which sucks. I'm pretty sure this card simply doesn't support it. I can run MAME fullscreen with stretching, but that's not what I'd like to do.

Basically, I think I have to get a PCIe ArcadeVGA and another PC w/ a PCIe slot, and go from there. cotmm68030 might have been right about my frying the video card.