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I'm in the middle of fixing a Plus. The main issue I'm fixing is a dead flyback transformer + BU406 transistor (both of the parts are clearly faulty), which I feel happy doing. I want to check my thinking about the rest of it. The board has part number 630-0108 and is marked "INTERNATIONAL" on...

I have a Mac Plus I'm repairing and cleaning up bit by bit. The next major problem is the internal speaker not working. Via the 3.5mm audio jack on the logic board, I can tell it produces audio correctly so the speaker must be busted. I don't know how it broke. Maybe overdriven? Plenty of white...