Jump to content

Audio and video problems with Macintosh Plus

Recommended Posts

Today I powered on my Mac Plus and I heard really weak start up beep and there was this weird pattern on screen for a few seconds, then the missing disk screen showed up and it booted into a system as usual, except there was no sound. Second time I powered on the Mac there was no sound (not even quiet beep), also there wasn't any audio output from the audio jack on the back.


Link to post
Share on other sites
  • 2 weeks later...
On 10/29/2018 at 2:24 PM, bibilit said:

Checking Ram is easy, but you need another set to swap aound.


A cheap Multimeter is all you need to check voltages.





I know this reply is late because I didn't the have time to do this. I skipped the RAM and voltage test and checked  the solder joints on J4 and some were cracked. I re-soldered them, it didn't help, but upon seeing the checkerboard I heard screech, second time I powered on the mac there was no sound.

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...