With VF3 when I first tried booting it a month or two back, the 3.3v PSU worked a treat, but the old Peter Chou would crash out immediately - the red light to indicate it was on would light up, then immediately drop out and there'd be no power on the JAMMA adapter when I tested it with my multimeter. With VF3, it's a bit more tricky, and I have a feeling it's my PSU that's to blame here, as well as some of my wiring before I beefed up the 5v and GND lines. Turned off, put the ROM board back on, the LEDs on the bottom board are fine, but the red LED 11 in the middle board is still lit up. To test things a bit further, I removed the top ROM PCB, leaving the bottom two boards (since it's a Model 2A system, it's a platter of three boards) and rebooted - same problem, LED 11 is lit up, I think I saw a couple of red LEDs on the bottom board near the filter board light up, and the garbled screen. I've pulled the PCBs apart and put them back together again, checked to make everything's in there nice and tight and checked for physical problems on the boards, everything checked out, no change. On the PCB, the red LED 11 is lighted up, and I'm getting like a garbled green test pattern thing on the screen. I'll start with VF2 - I'll put the chassis into 24k mode, roll the PSU back, connect VF2 and get the voltage to 5v (maybe 0.05v over). After beefing up both lines, I'm getting much better performance across all my PCBs (CPS-I, Neo Geo, CPS-II, System 11 and a few others). In order to boost the 5v and GND lines on the main PSU, I've also increased the amount of wires coming between the PSU and the JAMMA connector as I wasn't getting solid +5v due to some flimsy wiring. To connect the Model 2 and Model 3 boards into my JAMMA setup, I'm using one of these (Model 2) and one of these (Model 3).
Now, before I go on I'll clarify my setup - Astro City cab with a 15k/24k chassis (Pentranic, previous owner slapped in a generic 15k chassis that blew up, so I replaced with a Pentranic), bog-standard Peter Chou 15A PSU, 3.3v Wei-Ya PSU, cab is JAMMA-ready. First post here, so apologies if I've posted this in the wrong spot! I was talking with some other people on another forum and they mentioned that since this might get a bit technical, KLOV's forum members might be able to shed some light on some issues I've been having with Model 2 and Model 3 PCBs, so bear with me, hopefully this will make some sense!Ī few months back I snapped up VF2 and VF3 from someone interstate (I live in Australia), and have been having some troubles with them, and I'm not sure if it's me, the boards, or maybe a combination of both!
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