Jump to content

Mac SE speaker issue

Recommended Posts

I have a Mac SE with the 800k logic board I’ve been working on with a speaker issue.  Power it up and no speaker, everything else working great.  Check the ohms and I'm good, reflowed solder around speaker pins on logic board; still no help.  From what I’ve read there could be a problem on the analog board,  it before digging into that I tried another 800k logic board from a different machine that is working just fine.  Hooked it up and speaker works just fine.


Therefore, I know the problem is with the original 800k logic board.  I haven’t found any articles addressing this yet.  Does anyone know what I should be looking for on the logic board to fix or repair?


Thanks to the community for any and all help.



Link to post
Share on other sites

Hard to say, can be anything from a bad trace to a sound chip.


The Sound chip is on the Upper left corner (C28) label is SND.


The chip is unlikely troublesome, but who knows, recently replaced one on a Macintosh Plus without sound and it came back afterwards.

Link to post
Share on other sites

@bibilit I did take a look at that chip and it looked good, so I decided to leave it on.


As an update to my problem, I needed to run a bunch of prototyping boards and classic recaps through the ultrasonic cleaner yesterday so I also ran this problem board through.  It solved my problem and the board is fully functioning now without any speaker issues.


Thanks to everyone that tried to help.

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...