Master System Boot (Sega Mega-Tech) Updated Mar 15, 2026 · 32 min read · Support · 0 viewing 🔥 Most active page right now Log in or register to read the full article. Previous Powering From Bench (Sega Mega-Tech) The Sega Mega-Tech is powered from the pin headers at the top right . It has two main rails:- a ... Next Mega Drive Circuit (Sega Mega-Tech) Here are some useful pin diagrams and details for checking parts of the Mega Drive System 315-5313 (...