MV1B1

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The MV1B1 appears to be a newer revision of the MV1B board. I quick compare between the 2 shows the Z80 cpu and RAM chip next to the Z80 are different types/packages.

Board Scans - Set 1

This MV1B1 was a board I received from aliexpress/china. I'm pretty positive the NEO-BUF bypass seen on the front scan of the slot board is something they did and is not normal. I've seen this type of bypass for the NEO-BUF on other 1 slot boards from aliexpress/china. I don't see any other obvious mods / repairs to the board, but it does appear the corner of the 68k cpu is slightly melted.

  • The battery and heat sink on the audio amp were removed prior to scanning
  • The standoffs seen in the first scan are related to the scanning and are not part of the board itself
main board top
main board bottom
slot board front
slot board back


Board Scans - Set 2

Here is on without the NEO-BUF bypass shenanigans.

  • The battery and heat sink on the audio amp were removed prior to scanning
  • The standoffs seen in the first scan are related to the scanning and are not part of the board itself
main board top
main board bottom
slot board front
slot board back