The horrific looking pair of wires next to the capacitors. I didn't do this, sooooo not guilty of this nor the fuse "jumper" next to it. Guessing its the reason why this Sega CD refuses to work.
Is there a hole for the collector? I take it the pin has blown clean off... Found this on a french site: http://babelfish.yahoo.com/translate_url?doit=done&tt=url&intl=1&fr=bf-home&trurl=http%3A%2F%2Fretrogamebay.free.fr%2F%3Freparation-d-un-sega-cd-qui-ne-s.html&lp=fr_en&btnTrUrl=Translate Looks like a different revison pcb, but maybe the Q301 is the same? also this: http://www.digitpress.com/forum/showthread.php?t=41258 Original part seems to be a B963.
Somebody used wrong polarity AC brick on that MCD2 The transistor that turns on the MCD when MD side runs has blown and is bypassed... and the wires are in place of the fuse that should have blown before transistor did. I once accidently blew the transistor in my MCD2, now its replaced with a wire link...
