Install PixelFX's Retro GEM kit in a 3DO console.  This will give you HDMI output from your 3DO using a mini HDMI port.

A comprehensive install includes the following:

• Install the Retro GEM kit
  
• Upgrade the kit to the latest firmware
• verify operations

NOTE(S):

• A working 3DO console must be provided - FZ1 or FZ10
• Can not be the last 3DO released (Anvil version) as the kit does not support it
• The Retro GEM kit must be provided by the customer. It's up to you if you purchase the basic or Shiny edition
• 3DO FZ1 suffer from 2 capacitors in the power supply section that always leak - these will be replaced as well