Hey everyone. I stumbled on this thread while trying to fix my own Mac SE/30 sound problem.
Back story: I got hold of an SE/30 that was in good shape (i.e., logic board was not battery-bombed and only minimal cap leakage with minor corrosion.) The system chimed, booted, and worked. I recapped and cleaned up the whole logic board and that process went well. (Maybe.)
After the recap work, I fired the system up for several hours and played around to make sure it worked. It chimed on start, but I wasn't able to get any sound out of it. I used the Sound control panel, since the owner of the system didn't have any installed applications with sound output. None of the control panel alert options generated any sound. (Unfortunately, I think the original hard drive is now dead too. It has a solid LED on power up, and the system can't see the disk anymore. Problem #2 to solve with a BlueSCSI order soon.)
Reading this thread, I decided I should check my newly installed capacitors at C3, C4, C5, and C6. They looked ok. However, I went back and touched up the solder joints thinking that some may not have good contact with the pads. Unfortunately, that might have been a mistake as I have no chime now on power up.
Here is my test plan:
1. Use the headphone jack to confirm sound output, assuming I should hear the chime there too.
2. Verify that the speaker wire is undamaged with a continuity test.
3. Verify that the speaker still functions.
4. Visually inspect the traces from those capacitors and check continuity where possible.
If you have other test ideas or other components I need to check, I would appreciate the ideas.
I realize that I might need to get the BlueSCSI for a bootable system for more in-depth software-based testing.
Thanks.
Back story: I got hold of an SE/30 that was in good shape (i.e., logic board was not battery-bombed and only minimal cap leakage with minor corrosion.) The system chimed, booted, and worked. I recapped and cleaned up the whole logic board and that process went well. (Maybe.)
After the recap work, I fired the system up for several hours and played around to make sure it worked. It chimed on start, but I wasn't able to get any sound out of it. I used the Sound control panel, since the owner of the system didn't have any installed applications with sound output. None of the control panel alert options generated any sound. (Unfortunately, I think the original hard drive is now dead too. It has a solid LED on power up, and the system can't see the disk anymore. Problem #2 to solve with a BlueSCSI order soon.)
Reading this thread, I decided I should check my newly installed capacitors at C3, C4, C5, and C6. They looked ok. However, I went back and touched up the solder joints thinking that some may not have good contact with the pads. Unfortunately, that might have been a mistake as I have no chime now on power up.
Here is my test plan:
1. Use the headphone jack to confirm sound output, assuming I should hear the chime there too.
2. Verify that the speaker wire is undamaged with a continuity test.
3. Verify that the speaker still functions.
4. Visually inspect the traces from those capacitors and check continuity where possible.
If you have other test ideas or other components I need to check, I would appreciate the ideas.
I realize that I might need to get the BlueSCSI for a bootable system for more in-depth software-based testing.
Thanks.
