Neo Geo MV2F Backup Ram Region 555 FF40 |
(1/1) |
Claiker: Hi. I´ve got a MV2F, i use universal bios 2.3. when i turn on display Backup Ram region 00D00010 5555 FF40. I think the two rams between suicide battery and the bios could be the problem. I have tested the rams, some pins not signals, but i have not scheme to fix it. Do you have any idea how to fix it? Thanks. |
Claiker: I have not signal /we in both cxk58257. thanks |
channelmaniac: Backup RAM is close to the battery... Look for the RAM that has pin 28 NOT connected to the +5v line on the JAMMA connector. It's surface mount SRAM and you'll want to replace the one that is connected to the lower 8 data bus pins on the CPU. |
channelmaniac: Once you replace the bad Backup RAM it will continue on with the RAM tests and tell you if it finds any others as bad. |
Claiker: thanks for responding. one of the rams was very hot, could be wrong, I've removed. There are pins with corrosion. I need to buy another ram to replace the bad. The battery is removed, If I can I will put a picture. Is there any way of skipping the backup test ram? |
Navigation |
Message Index |