Uploaded February 2022 | Updated September 2026, 2 weeks ago

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Working on the Neo Geo MVS Backup Ram Error 555. The Universe Bios has been a great fix from part 1 to get me in to AES mode to play games, but I wanted to resolve the backup ram and do a full future proof refurb of the 1 slot MVS board too.
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LINKS
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Neo Geo MVS Part 1:
youtu.be/mheb4UUkdlE
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MUSIC
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Overview
♬ #1: Dunderparullent : Call Me Katla Baby
soundcloud.com/dunderpatrullen
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CHAPTERS
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00:00 Overview
00:58 Replacing the Backup Ram Chips & Backup Battery
02:50 Replacing more Ram chips!
04:36 What next? Another chip to order
06:49 Changing capacitors on Neo Geo MVS
10:32 I made it worse!!!
13:33 I give it another go and improve the solder pads
17:16 One final test
18:09 Wrap up and what worked