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Hi everybody I recently obtained from a friend a Macintosh Portable in perfect conditions, and I am currently trying to bring it to life (even if it's useless! Yes, I am wasting my time, got a problem?). It's the very first model, the one with no backlight. First thing first, I disassembled...

Hmmm.... close the topic. I'll answer to myself.  IT WORKS! The flyback of the mac classic works on the Plus. Mind that there are multiple models of the classic and classic II, but this one is perfectly identical. No more whine noise.

Hi all I have a mac plus that is making a "zzzz" noise and emits ozone. It's the flyback for sure. What I have is a Macintosh Classic analog board with a quite good flyback that seems almost identical. The marking in the Plus is: 157-0042B Mac Classic: 157-0121 I'm about to desolder them...

I FIXED IT! You were right I suppose, tried remaking the solder points on the small PCB, tested the transistor.. fine. The potentiometers work outside the board, but apparently they were broken anyway because after turning them many times it actually started displaying with a good brightness...

Old pic, it's not like that. I'll check those too

Where? What are you talking about? I checked the big guys in the picture.

They are almost perfect, checked with the board plugged.

The potentiometers work fine (the big ones, brightness and focus), I first checked them with a DMM. You think the VIA could be the culprit of the brightness? Or the poweron issues? Thank you

Hi all, and thanks for existing. This forum has helped me many times repairing old stuff. I have just bought a Classic II in excellent conditisions, and the previous owner said that it smelled smoke. So without even powering it on I took it apart and started cleaning/recapping the analog and...