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So I picked up a PCMCIA 128kb SRAM card hoping to use it on my MVS 2 slot. It physically won't fit all the way into the slot. Comparing it to the Apocalypse version, the edges aren't "notched" in, so I think it's blocking it from being fully inserted. I've attached some pics to show the...

I hope this is the right place to ask questions about PVM servicing and adjustments. I picked up a PVM-8040, which is an 8" lower end PVM with no service menu I believe. All the geometry adjustments are done with pots. I pulled up the grid using 240p suite, and the squares at the bottom are...

neSneSgB Honest, easy to deal with, kept me up to date on shipment, fast shipping, item as described and packed very well, worked perfectly.

I need the socket for the SEGA 315-519x custom chips on the System 16B board. I suspect one of my chip is bad but I don't want to solder the new chip on to the A board without a socket.

I picked up 2 Tetris 16B boards, one with rom one without, both have encrypted CPU. On the complete kit, everything works. I swapped the Tetris ROM board over to the other 16B, all I get is a white screen with some pink or magenta vertical lines here and there. I awaited a bit to see if there...

If you've got one collecting dust, I'll take it off your hands.

So I picked up a mostly functional 1943 PCB that I want to fix. All the sprites in the game look like they've been chopped vertically and then each stripe offset of each other. For example the P-38 would be chopped into maybe 8 strips, with even numbered strips shifted up, and odd numbered...

Based on what I've learned from these 2 threads and Mike McBike's conversion posts, I think I'm ready to order EPROMs for my conversion. These are for personal use, and donors are loose carts with beat up shell and torn label. They're more for technical reasons than playing the games themselves...

So I think I broke my MV1B while recapping, I lost all sound afterwards, not sure how, maybe excessive heat? There's no sound out of op amp, DAC or pin 31 on 2610, everything else still works. I've been trying to get it working while parts slowly trickle in. My current working theory is that...

Anyone have an US source for new (preferably) or maybe even used SRAM? I've got a MV1 with bad backup RAM. Dev wiki says I need 62256, 43256, cxk58257 type SRAM in SOIC28 package. Checking on digikey, the only one available has a minimum order of 76 :) Arrow has nothing. Mouser only has SOP28...

So my MV1B finally arrived and everything seems to be working properly. Audio is low and the trimmer pot for volume is scratchy, but since I will be modding it for stereo, I didn't mind it. I'm using an ebay Supergun by this seller neojamma that RGB Bob mentioned in his blog. I also got his...

So I picked up a mean well RT-85A power supply per suggestions from retroRBG. First one would pulse on and off at 1hz, 2nd one turns on, but has a high pitched whine. Come to think of it, the 1st one had the whine during the pulses too. Has anyone noticed this? It's annoying enough that if I...

Looking on ebay for used Neo Geo CD controllers, they average $60+ and I don't really know their condition until I get them in my hands. On the other hand, brand new Neo Geo Mini controllers are $25 and guaranteed to be fresh. Has anyone tried both and found them to be similar in tactile feel...