Locked Cabinet + More

[ZeroQuest]

I just acquired a Golden Tee Classic unit, machine appears to work, however the screen is blue with solid white diagonal lines. I cannot get into the cabinet since it didn't come with any keys. Would the best route be to drill out the locks, or is there another way? I did try inserting a quarter and the machine does work - sound works, trackball responds, etc. Hopefully something jarred itself loose on the trip to my home. 

If not, what am I looking at for a replacement monitor?

[SirPeale]

Let's see some pictures.  Is this a conversion or a dedicated GT?

[ZeroQuest]

Let's see some pictures.  Is this a conversion or a dedicated GT?

dedicated

Here's some pictures I just took. Sorry they're so big.

http://raptorscript.com/gt/01.jpg
http://raptorscript.com/gt/02.jpg
http://raptorscript.com/gt/03.jpg
http://raptorscript.com/gt/04.jpg
http://raptorscript.com/gt/05.jpg
http://raptorscript.com/gt/06.jpg
http://raptorscript.com/gt/07.jpg
http://raptorscript.com/gt/08.jpg

They're uploading now, so they may not work yet. Apologies in advance.

[ZeroQuest]

http://raptorscript.com/gt/08.jpg

The video problem is shown in the picture above. My battery died, so this was the best of the 3 I took before it died on me.

[crashwg]

You could try to pick the lock...  I've had pretty good results with using a regular sized paper clip for the pick and a larger one for the tension wrench.

All you have to do is apply a little torsion to the lock and gently scrub the pins back and forth a couple times.

[Crowquill]

You should be able to drill out the locks without too much effort.

From what I can tell in the pictures, it looks to be a Midway cab like they used for most of the Mortal Kombat games and NFL Blitz.

[BobA]

A strong turn of a slotted screwdriver in the lock works alot of the time.

[Sidgoop]

Easiest way in is to drill.  Get a good set of bits (at least carbide tipped), start with a bit between 1/16" and 1/8".  Drill in the dead center of the keyhole.  This will be your pilot hole.  Then replace the bit with a 1/4" one.  It should go in relatively easily.  This should pop the screw on that holds the locking cam in place.  Then, use a flat blade screwdriver in the hole that you just drilled, and give it a turn and pull. It should pop right open.  When it's open, you can take off the lock and measure the length.  It usually is either a 3/4" or 7/8" lock.  You can easily order replacements relatively cheap from Bob Roberts.

[ZeroQuest]

Yeah, that's exactly what it looks like.

From what I can tell in the pictures, it looks to be a Midway cab like they used for most of the Mortal Kombat games and NFL Blitz.

[ZeroQuest]

I'll give this a shot first, then drill if I can't get it. Thanks guys

A strong turn of a slotted screwdriver in the lock works alot of the time.

[ZeroQuest]

Is it possible to tell anything from this picture? I'd hate for the screen to be bad...

http://raptorscript.com/gt/08.jpg

The video problem is shown in the picture above. My battery died, so this was the best of the 3 I took before it died on me.

[BobA]

Hard to tell from the picture but I assume the those are light traces on the screen that have no sync.  Looks like there is no signal getting to your monitor.  The traces show that something is still working in the monitor.  Check for loose connections and connectors when you get your cab open.

[ZeroQuest]

OK, got the machine open. REALLY clean inside. Checked all cable connections and the monitor is still having the same issues. Although I no longer see the diagonal lines and it now simply appears blue. I'm not sure where to go from here, any suggestions?

[ZeroQuest]

When I turn off the machine the screen flashes and then goes out. (Just like a TV does) So it definitely appears to be working. I think you're right and that the monitor simply isn't getting a signal. I'm just not sure where to go from here. It's a standard Jamma cabinet, is there something common I should be checking for?

Hard to tell from the picture but I assume the those are light traces on the screen that have no sync.  Looks like there is no signal getting to your monitor.  The traces show that something is still working in the monitor.  Check for loose connections and connectors when you get your cab open.

[Fozzy The Bear]

When I turn off the machine the screen flashes and then goes out. (Just like a TV does) So it definitely appears to be working. I think you're right and that the monitor simply isn't getting a signal. I'm just not sure where to go from here. It's a standard Jamma cabinet, is there something common I should be checking for?

Yes.... Change out the cable from the board to the monitor..... It's more than likely a wire break and that is impossible to find just by looking.

Start by taking the cable out and buzzing through it with your meter to find out which line is down. I'd suspect that it's the sync signal, but it could be that it's the video signal if it's running in composite mode.

Best Regards,
Julian (Fozzy The Bear)

[ZeroQuest]

When I turn off the machine the screen flashes and then goes out. (Just like a TV does) So it definitely appears to be working. I think you're right and that the monitor simply isn't getting a signal. I'm just not sure where to go from here. It's a standard Jamma cabinet, is there something common I should be checking for?

Yes.... Change out the cable from the board to the monitor..... It's more than likely a wire break and that is impossible to find just by looking.

Start by taking the cable out and buzzing through it with your meter to find out which line is down. I'd suspect that it's the sync signal, but it could be that it's the video signal if it's running in composite mode.

Best Regards,
Julian (Fozzy The Bear)

OK tried that. All wires check out fine. I don't have another JAMMA board to test this with... Is there anything else I can try? The picture on the monitor appears to be the same with or without the cable connected from the board. I did incorrectly attach the cable once and the picture did appear different, but looked as-if the horizontal hold was off by a large degree. I adjusted it and there was no picture, but it was no longer blue. I believe it was a light grey. (solid, no image)

[ZeroQuest]

Going to attempt this:

http://dragonsden.emuunlim.com/ddvgatutl.htm

To test the monitor. If that works, it's most likely the JAMMA board... ? Maybe the connection to the board is loose. (thinking out loud) I'll try that first...

[ZeroQuest]

OK, just spliced into the monitor cable using the directions above. Connected a PC to it and it works! So something on the JAMMA board is either loose or not working. Is this a common problem? Is there something on the board I should be looking for? I did notice both LEDs on the board are blinking. I'm not sure if that's normal or not...

Thanks in advance guys! Can't wait to get this thing working. My MAME cabinet needs a companion.

[ZeroQuest]

Removed the JAMMA board. Am now trying to find anything that could be shorted out. Board has some corrosion, so that's likely the culprit here. I'm just glad it's not the monitor.

[BobA]

Clean off all the corosion with an eraser and then clean off the eraser bits with rubbing alcohol.   Glad your monitor is OK.

 

[ZeroQuest]

well tried connecting the vga cable to the JAMMA plug (rather than splicing into the cable close to the monitor) and it worked fine. So I'm positive the cable is good. However... I took out the board, cleaned it really good, and it still doesn't work. Might be a hopeless cause. I'm thinking I may convert this cabinet to a MAME box for now. I'll leave all the original JAMMA cables, etc intact so I can convert it back at some later time.