Stephen
Well-known member
A few months ago I bought an analog board (PN: 630-0102-J) knowing it did not work. I was hoping it could be resolved with a good cleaning, fresh caps, and maybe some reflowed solder joints but alas — here I am.
Never the less, it repeatedly clicks / squeals (video) in the same way it did before I started working on it. Does the wisdom of the 68K Macintosh Liberation Army have any advice or is my analog board officially a donor board?
- I have replaced all of the caps
- I have reflowed all of the solder joints (yes all of them)
- I have cleaned the board
- I have inspected almost all of the resistors and confirmed they are within tolerance.
- I found R11 was corroded and replaced it.
- I've confirmed the (very old) transformer still works by installing it in a working Macintosh Plus analog board.
Never the less, it repeatedly clicks / squeals (video) in the same way it did before I started working on it. Does the wisdom of the 68K Macintosh Liberation Army have any advice or is my analog board officially a donor board?