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I was curious in the case of bad ram being the issue I'm seeing as well, I'd seen mention that these IS42S16100H-7TLI-TR from ISSI work for the 5x 16M-SDRAM (16Bit) chips, but hadn't found a solution for the 8x 64M-SDRAM (16Bit) chips, in case the issue lies there for me. I came across these...

I haven't yet actually, I figured since I haven't gotten to even the NAOMI splash screen with nothing attached a cart wouldnt change that, but i might have to give it a regular game a shot just in case

Hi, having an odd issue with a NAOMI. I get no boot, black screen, no sound, but have gone through all the usual steps. Voltage is spot on and is coming from a sun psu Swapped it into the same power setup as a working NAOMI, no dice Swapped in the confirmed working bios from that Supercap has...

I've repaired about a half-dozen of these chassis at this point, and one major worry area I've come across are the 8 182 1.8k SMD resistors underneath the flyback, R533-539 and R514. The board is almost always scorched here, and in one case, a hole was burned clean through the board, needing a...

Looking for a Namco Super System 22 Video Board specifically, as the PCB stack I got with my Air Combat 22 is missing it entirely Also looking for a WG 25k7000 chassis and 2 Nanao MS9-29 chassis, for a Neo Geo and a Motor Raid twin setup that all had the chassis pulled for whatever reason On...

Update, Found a solution and now have (garbled) video! Following the excellent work of City Game on youtube ( View: https://youtu.be/OsxSpCeLcEA?si=zyUbO60DWKw4IaEa ) thanks to autotl, I tested pins 1 and 13 on the CXA1779 on the mainboard to check voltage. It requires 12v to run, but, same as...

I have a Tekken 3 board that needed a lot of work, no boot when I got it, recap plus a couple broken trace jumpers later it boots but shows no video whatsoever through JAMMA. I feed it through a GBS, and initially got a no signal feed, but now get a dark gray screen. It plays enough that I could...

Awesome, thanks so much for your help!

Thanks for the reply, I realized I worded it rather confusingly. I'm mostly wondering if I could take say, a Power Stone cartridge and put that onto the HotD2 NAOMI motherboard in place of the HotD2 cartridge (jamma/button setup changes aside), or if that's just not possible for whatever reason...

Hi all, I have an opportunity to get a full HotD2 cab and was wondering if anyone has any kind of confirmation on whether the cart on its early mobo can be swapped out for later NAOMI releases. I've found a lot of threads about the compatability of the HotD2 cart on later NAOMIs, but not the...