68kMLA Classic Interface
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| Audio and video problems with Macintosh Plus | |
| Posted by: Dipper184 on 2018-10-28 06:36:55 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.  | |
| Posted by: bibilit on 2018-10-29 00:07:58 Troubleshoot ram and voltage outputs first. | |
Posted by: Dipper184 on 2018-10-29 05:10:15Troubleshoot ram and voltage outputs first.I don't know how to do it, also I don't have the equipment... 🙁 | |
| Posted by: bibilit on 2018-10-29 06:24:43 Checking Ram is easy, but you need another set to swap aound. A cheap Multimeter is all you need to check voltages. https://www.classic-computers.org.nz/blog/2015-05-14-mac-plus-checkerboard.htm | |
Posted by: Dipper184 on 2018-11-10 02:44:27Checking Ram is easy, but you need another set to swap aound.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. | |
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