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Title: Jump Bug Restoration gone AWRY Post by: randywhatson on November 14, 2016, 03:12:31 pm Hey guys...
I am restoring a Jump bug that was converted to Mr. Do! Everything was finished, except I didn't have a Jump Bug PCB. Well, I finally bought one. It came with an edge connector that also connected to a Jamma Harness. So I had two options. Re-wire the Cabinet to OG jump bug... or re-wire with a Jamma harness. I opted for Jamma. It seemed easier. So I took a jamma harness, wired up the essentials (+5, ground, +12, -5) and re-wired the control panel. Sent the wires to the monitor. There were a few connectors that didn't go to anything. I turned it on and have a super-blurry... and very unstable looking picture on the screen. I can see the twinkling "stars" of the background, but the main image is severly distorted. It looks like a sync. issue, only its not scrolling. Is there something I should have hooked up, but didn't? I thought it was a monitor/picture image... so I tweaked a bit with the red, green, blue and sync wires. Nothing. Also, the cabinet I stole the jamma harness from had the same monitor. A k6100. What could I be missing? What needs to be wired in to make a Jamma harness work? Like I said, there were some connections that I didn't hook up. Seemed like coin door stuff... nothing important. What should I try next? Title: Re: Jump Bug Restoration gone AWRY Post by: John's Arcade on November 14, 2016, 04:08:23 pm Where did you get the Jump Bug pinout?
Title: Re: Jump Bug Restoration gone AWRY Post by: randywhatson on November 14, 2016, 04:29:21 pm Didn't need one. The pcb came with an edge connector... and then it connected to jamma ( I bought it from Eldorado games and it was something he created).
I hooked it up in my Jamma cabinet and it played. I removed the whole Jamma harness from that cabinet... hooked up the red/black/orange to the +5. +12 and ground of the switcher... plugged in the connectors to the monitor (both k4600... not k6100) and plugged in the molex for the controls. And I got weird, wavy, distorted image on the monitor. Some dude mentioned pin 14... a ground... that I didn't hook up. I'll try that when I get home. Title: Re: Jump Bug Restoration gone AWRY Post by: John's Arcade on November 14, 2016, 09:12:41 pm Make sure the JAMMA adapter is wired correctly. The pinout that is floating around is WRONG.
https://forums.arcade-museum.com/showpost.php?p=2732673&postcount=11 Title: Re: Jump Bug Restoration gone AWRY Post by: randywhatson on November 16, 2016, 11:26:49 am see the thread about the k4600.
I was confused because it worked just fine running Mr. Do!. But not Jump bug. Here is what Bob Roberts said: "The screen has horizontal bans of color like a barber pole or maybe almost straightened up, but not quite, so that the picture is slanted. Some pcbs may work fine, while others don't." Title: Re: Jump Bug Restoration gone AWRY Post by: Tighe on November 17, 2016, 08:00:44 am Phetishboy had me make an adapter for his jump bug and his had a similar issue, he sent it out for repair, I forget who he sent it to i believe he mentioned it in the podcast
https://youtu.be/sFaK0N_7y3M Title: Re: Jump Bug Restoration gone AWRY Post by: randywhatson on November 18, 2016, 01:24:38 pm It's fixed. It was the horozontal adjustment know (or was it vertical??).
Anyway, it was the k4600 not the PCB or my hack wiring job. |