help

So taking another stab at fixing this MV1FZ that's been under my workbench for years. About 90% of the time, when powered on it presents the following less than helpful error. With the UNIBOS, I can press <A> and from then on it works flawlessly. I've already replaced the RAM, but that seems...

Recently got a Sega Net City, along with a Naomi GPU. It boots up and runs the game, but wont take any inputs, not even the "test" or service buttons. The I/O board is a Sega 837-13551 I've made sure everything is powered, and double checked that pins 1 and 3 are connected on the 60 pin...

Hi there! I recently purchased a revision 1 fighting pcb and I have the pot on the front of the IO Board and the jst connectors for sound and powering the amp. I am trying to get sound out of the board but the pin outs cia the manual are kinda hard to see… looks like power supply jst...

Can I run a Type X on a JVS IO board? I'm sure this has been answered time and again, but I'm having issues finding a conclusion this morning

I had spent some time, socketing and moving around some of the oscillating crystals trying to diagnose a kludged together 12mhz A-board. I had temporarily removed the 68k and z80 crystals from a known working board. I put in some sockets for them, put them back when I was done and everything...

Looking to move my sketchy CPS1 multi board to a new 'A' PCB due to the old one being bad. Anyone know what modifications if any are required? It looks like it just uses a single reset wire, but with all the iffy repairs that are on my current 'A' board I'm not sure if any of them are related to...

So, while fiddling around with mounting a LCD in my cabinet for a bit while I work on my CRT, I noted that I was getting no sound from my CPS1. After pulling the board (which has a Chinese 32 in 1 B+C board) I found that most games ran without sound, while a few had a single repeating audio clip...

So pulling my 25" CRT from my MVS "big red" so that I can work on it, planned on putting in a 19" SuzoHapp CGA/VGA LCD for the time being so I can keep using it. Now this cabinet has a JAMMA switcher and seven different arcade boards in it, including a MVS-2F and MVS-1B. Wiring is still MVS...

Pulling my CRT to work on, want to get it running on my workbench. Looking for a cheap isolation transformer to do so with, but not sure of the requirements. Thinking along the lines of this one...

OK... so I am trying once again to get my QNIC CGM-2500 setup/tuned. Main issue it's had is that the color mix is still a bit too red (which may be not enough blue). However, I've found that this is at least slightly mitigated by letting it warm up for a half hour or so. This means that one of...

Question, and forgive me if this is answered elsewhere. For a game that want's a secondary memory card, such as Soul Caliber 2. Is it just a stock PS2 memory card? Any special preparations etc? Edit: Never mind, found the answer.... it's somewhat proprietary and can't be easily reproduced. Bah.

Working on getting my Namco setup, all's well but I see diagonal wavy lines in the 15khz output. Is this common, or do I have a problem?

Hello, I want to buy a replacement working crypt killer hard drive or compact flash with the ide adapter. I have a pcb with a dead hard drive and I’m kinda lazy to make a replacement my self. Any help or if anyone would like to sell me one will be greatly appreciated.

So testing out my limited pile of Namco titles, and came across one "Minna de Kitaeru Zenno Training 1.50". When I try to use it, I get an IO board error. This makes me think that it's expecting a secondary IO board somewhere, but I can't find any information about it. Anyone have any ideas...

Blast City with Nanao MS-2930. In 15hz mode (using a cps2 multi), I have about 2 inches on the left and right. I’ve read something about a switch on the chassis to go wide... anyone know about this? I’ve messed with most of the adjustments on chassis and it’s helped with picture quality and...

I know others have gotten this to work, but not been able to find a concise guide as to what needs to be done and what hardware is needed. Anyone have any pointers?

hello guys I my friend gave me his cps3 sf3 2nd impact and it boots in 2 types 1st is graphics problem but running with sound in it 2nd is Japanese text display Has anyone has ever encountered thus problem? I tried cleanung the main board still this two problems still occur. Here are some...

I recently purchased a taito type X from sophia corp and I also purchased a multigame HDD from arcademodbios. for some reason when starting up tetris the grandmaster 3 it gives an error message then booting back to the game selection menu. the only game working with this Multi kit is GigaWing...

I recently purchased a sega naomi net dimm kit and i have an external PSU for it however I don't have the proper cable or skill set to be able to make a power supply for it or power it up... it's for connector VLP-03 in order to power it up.. any info is greatly appreciated

Hey, I hope anyone can help me with my problem (I come from german and my english is not the best) Last Week i buy an Sega naomi 2 Cab with virtua soccer 3. Now when i start the game and use my Soccer Team its still freezed not black screen still freezed. What can i do? Its possible to make a...