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I come from the future! This thread was exactly what I needed to progress my MK1 to Smash TV conversion. It's really frustrating that Y-Units aren't wired the same. But I'm curious... according to the manual, MK1 doesn't require -5v? It has one less wire on the audio power harness than what...

I believe J3 is on the filter board, so it's irrelevant. You should have all the info you need now. Just make sure you don't hook up 5v incorrectly to your gun or you'll fry it. Below are what the Happ wire colors represent, per email from Happ. RED- +5 WHITE - TRIGGER BLUE - OPTIC ORANGE -...

You are correct about the filter board. Not necessary. I've attached a photo of the header where the gun connections go. Below is the correct pinout according to the manual. If you don't care about solenoid or lamp -- only 5v, sensor, and gnd are required to make the gun work. 1) 5v 2) 5v 3)...

Filter board not necessary. I hooked up my happ guns directly to the daughter board.

Solved. The sensor in the gun was just really dirty (fine dust, presumably from the recoil). Good place to start before troubleshooting aiming problems!

Just picked up a Namco Razing Storm, which seemingly uses the same gun board as Sega cabs. Any idea why Player 2 crosshair is extremely jittery? The tracking and coverage seems to be alright, but it's jittery. Player 1 is working great with less jitter (less sensitive; moves slower). Player 2...

From what I gather, replacing the 7414 is the first step (as I don't understand diagnosing it). I've had the blue wheel out on mine for some time, and now yellow is starting to act up so I will take action now.

Works for a few minutes after startup, then stops working. To be clear, only 1 steering wheel has this issue.

My resetting Asteroids was resolved by replacing the rom sockets with new ones. YMMV.

*** I'VE UPLOADED THE SCHEMATICS HERE *** I've read through this thread a few times but some things don't make sense as I'm looking at my cabinet. 1) Per schematics, the wiring assumes a switching power supply that produces the standard 5v, -5v, 12v. 2) The auxiliary power board supplies -12v...

Sorry for the thread phoenix but I'd like to get my OW working. I have two complete board sets, both with issues. Any new info on who repairs these or any folks in this thread want to take a shot? I would like to send it off for repair unless it's something obvious or super simple that I can do...

Solved. I learned that you need to short the capacitor as it builds charge over time even with no battery -- and phoenixed roms don't like it. Question for the electrical engineering inclined: Can I just remove that capacitor? Do I need to bridge it if I do so?

I have a phoenixed AvP that has been working for the longest time. Today when I boot up the cabinet, pink screen. My troubleshooting steps so far: 1) Tested A-Board with another game. A-Board working confirmed. 2) Swapped all roms with a known working B-Board. Pink screen. So it seems there...

ok I'm back on this project. I wiggled some connectors and the board sounds to be playing fine. Free Play, start buttons blinking, accurate sound. Onto the monitor... I can see some stuff happening in the lower-right corner of the monitor (mounted vertically). 50VAC input is correct. The...

Power on --> no image, Start buttons blinking, random game sound effects and static can be heard. Swapped ARII with another rebuilt one I had on hand and no difference. Has LV2000. One light is on. (do I recall 2 lights for normal operation?) Previous to the move, it had an issue where the...

Need donor chip U62 from your busted Midway PCB (Wolf Unit family) Also looking for someone who installs these RAM chips. I have a Neo Geo board that needs its Work RAM replaced also. Wolf Unit game list: 2 On 2 Open Ice Challenge Mortal Kombat 3 NBA Hangtime NBA Maximum Hangtime Rampage...

I recapped the audio section and no change. What else could it be?

Does each device have its own fuse? I know monitors do and most PSUs...

bump......

Help me wire monitor, marquee, and psu in parallel AC circuit I have an Astro City candy cab which I suspect has a bad power supply. Characteristics of the original wiring: 1) Original wall plug is non-polarized 2-prong with no ground prong. 2) PSU takes AC in and has separate AC outputs to...