My retro Atari computer, a Mega 4 arrived installed with its original German language TOS 1.02 ROM chips. Now, i’m not a German speaker, so upgrading to English TOS 1.04 is the first thing I will tackle in this video. With that done, there is the noisy PSU fan. A perfect candidate for a new, near silent Noctua fan replacement. With these in place, do we FINALLY have a Mega ST thats ready to rock? Lets see!

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