Saiyenbreutus
New member
Sorry if this will be a long post but could really use some help!
I just purchased a Johnny Nero action hero game off Craigslist. When I went to test it, the picture came on and the game played but it had some things wrong with it. The sound didn't work, and every time it turned on you had to calibrate the guns. I gave a $100 for it so I figured it was well worth it!
Well when I got it home I plugged it in and it was still doing the same thing. But I noticed at the top of the screen that it had some horizontal lines near the top, I played with the v-hold and h-hold a bit and it affected them, but they wouldn't come out. Figured monitor might have a few problems that a new chassis would fix. So I thought I'd start by tackeling the guns needing calibrating every start up. I assumed the cmos battery needed replaced. So I shut the unit off, took out the battery and popped a brand new one in. And now I get nothing... the screen stays black when I power it up. I know it's possible that in that moment the screen went completely, but I will say that the monitor does power up, I'm getting glow in the neck and you can hear it power up, also if I disconnect the video cables from the Jamma while running it flickers colors on the screen. So I was looking on the board and I didn't notice at first, but under the cmos battery it says replace only while unit is powered on. I replaced the battery with unit off. Did I some how screw this board up replacing a battery with it off?
Also I'm not sure if it matters but the manual says the HD led on the pcb should be on and it Is not on now, don't know if it would light before this happened. But I do hear the hard drive spinning up. I've checked voltages at the Jamma harness, I am getting +5.00 -4.54 +11.47. And The three voltage lights are on. I've also checked voltage at the hard drive connector and see +5.00 +11.46
I plan on posting in the monitor section to see if someone can tell me what chassis I need to buy rebuilt. I figure it's worth that. But maybe not if I bricked the board somehow.
Any thoughts or a place to start would help a lot, I can get pictures of anything you need. Is my monitor just out or is there a deeper problem...
I just purchased a Johnny Nero action hero game off Craigslist. When I went to test it, the picture came on and the game played but it had some things wrong with it. The sound didn't work, and every time it turned on you had to calibrate the guns. I gave a $100 for it so I figured it was well worth it!
Well when I got it home I plugged it in and it was still doing the same thing. But I noticed at the top of the screen that it had some horizontal lines near the top, I played with the v-hold and h-hold a bit and it affected them, but they wouldn't come out. Figured monitor might have a few problems that a new chassis would fix. So I thought I'd start by tackeling the guns needing calibrating every start up. I assumed the cmos battery needed replaced. So I shut the unit off, took out the battery and popped a brand new one in. And now I get nothing... the screen stays black when I power it up. I know it's possible that in that moment the screen went completely, but I will say that the monitor does power up, I'm getting glow in the neck and you can hear it power up, also if I disconnect the video cables from the Jamma while running it flickers colors on the screen. So I was looking on the board and I didn't notice at first, but under the cmos battery it says replace only while unit is powered on. I replaced the battery with unit off. Did I some how screw this board up replacing a battery with it off?
Also I'm not sure if it matters but the manual says the HD led on the pcb should be on and it Is not on now, don't know if it would light before this happened. But I do hear the hard drive spinning up. I've checked voltages at the Jamma harness, I am getting +5.00 -4.54 +11.47. And The three voltage lights are on. I've also checked voltage at the hard drive connector and see +5.00 +11.46
I plan on posting in the monitor section to see if someone can tell me what chassis I need to buy rebuilt. I figure it's worth that. But maybe not if I bricked the board somehow.
Any thoughts or a place to start would help a lot, I can get pictures of anything you need. Is my monitor just out or is there a deeper problem...

