Recent content by gorf73

Which fuse is F2? I looked at my Zekes Peak, through the coin door, and took a picture. I do not see the fuses on mine as F2, they are not marked on mine.

Just picked up a converted Journey with everything in it still, except main board, bezel and marquee. This old game is out of stock on the repro with no ETA. Looking for a repro or an original in decent condition.

I am interested, sent you a message.

I had a tube that did the same thing when I bought a game. I did the same thing and recapped it. Still had the problem. Turned out someone before me broke a pin on the neck that just happened to be for the focus. The pin was still there and was visible but I could pull it out. I tried to use...

I don't really have any knowledge on these boards or reading schematics real well but perhaps maybe a capacitor or bad transistor in that area? I personally would check all of those around the color pots. One of the caps looks a little weird to me, I believe it was C31 but it could just be the...

I believe the game you are looking for is Uni wars or Uniwar S. It is on YouTube if you look up Uni wars.

I am trying to go off memory here so I may be wrong. My unit is not at my place so I cannot double check on mine. If it is a H or S model, I believe there is a microswitch in each scoring hole. As the ball rolls down, it makes contact with each switch below it, adding up the points (I believe 10...

This is great! I will take 1 control panel with the CPO please.

Hopefully this works out for you. Did you test that chip before ordering a new one or did you just order one? Please update with your results when you get the chip.

I checked the NMI pin last night and it seems to be pulsing the same as my working pcb. I poked around the bad pcb on the lines that go to the NMI anyway, nothing stood out to me. I will look a bit more over the weekend and compare to my working pcb and see if something stands out. Thanks for...

Thank you again for a reply. This does help clear things up a bit. This would explain why looking at the schematics I kept wondering where the information traveled back to the cpu from areas like the foreground and background graphics area. Following schematics it always seemed to end at...

Thanks for the reply. From day one I have been thinking it has something to do in the cpu section of the pcb. The game started acting up one day by freezing up in the middle of play. Turning it off and back on and it would work for a minute or so and then lock up again. A few times of this and...

Thanks for the replys. I have watched part of the video and it started to lose me so I need to start over and see if it helps. I borrowed a friends o-scope tonight and it is not my clock, it is at 5mhz at the CPU like it should be. So I guess I have at least ruled out a clock issue like I was...

I have been trying to repair my reactor pcb that I have a thread on and have not really made any progress. I believe it is an addressing problem that further down the line is not allowing an enable pin on a chip (74ls245) to be active (it is high) that is in the addressing and data bus control...

That sounds exactly what an untested pcb that I bought did on my zekes peak. Seeing that I had a working pcb I swapped my socketed chips to the bad pcb. For mine it turned out to be the chip#8279 (40pin chip) as well as the chip labeled AY-3-8910 (also 40pin chip). I was going to probe them but...