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I was really hoping this wasn't the case but the speaker is dead. I measured across it with my ohmmeter and it was open. If anyone has one from a dead macintosh let me know, from what I've read its supposedly 63ohm and 0.25w. I found one listing that was for a clear macintosh SE/SE 30 but it's...

I’m starting to suspect that there’s something wrong with the -12v rail. I checked for continuity between the entire amplifier circuit and seems to be fine. So my issue must be somewhere on this little row (PICTURE BELOW). I’m going to test voltages on that little row of parts in the morning. I...

So I was wrong about having a start up chime out of the speaker. It was the hard drive. I have no clue why I thought that it sounded like the Mac chime. Anyway there’s no chime out of the speaker, only out of the headphone jack. I was trying to do some trouble shooting and tested every pin that...

THE MACHINE IS HEALING. There’s still almost no audio, but to answer you’re question I’m not getting just a crackle at the speaker but I’m getting a crunchy bong and with headphone I am getting perfect audio with no crunch so I’m guessing either the speaker needs to be looked at or the...

A little bit of an update. I got the computer to display video, the monitors video adapter was dirty. But now I’m stuck with the flashing floppy disc icon, when I put in a good system disc it just spits it out and gives me an X on the screen. Ive tried using a ZIP disc with an entire Mac classic...

I had recently gotten a Macintosh IIsi that didn't have any signs of life. I've gone through it and recapped a fair amount of the power supply and tested the voltages, I was getting a solid +12.3 +5.4 -12.3. The machine powered up but no display or chime, I thought nothing more then it just...