Royal Mail admitted that they’ve lost the package that was shipped back more than a month ago from Spain, with my non-functioning Neo Geo MVS.
The good news is that I received a refund, and it took me just a couple of days.
The bad news is that the maximum refund is 65GBP, while I paid around 200GBP for the console.
The good news is that the seller already shipped me a replacement board, free of charge, which is very generous of him.
The bad news is that this is a naked board. No video output, no gamepad ports, no power supply, no enclosure. Now I’ll have to source everything by myself.
The board I received is MV1A. It comes as two separate boards, that you connect at a right angle. So your cartridge is put parallel to the motherboard.
There’s also a newer MV1C board, which looks smaller at least on photos, and consists from a single board, so the cartridge slot is on the motherboard, and the cartridge is put in a vertical position.
https://wiki.neogeodev.org/index.php?title=MVS_board_types
https://www.arcade-projects.com/threads/neo-geo-mvs-motherboard-pcb-comparison-chart-for-consolization.5904/