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| No sound on Macintosh SE |
Posted by: Skate323k137 on 2022-02-11 16:47:01
I see. And if there is a reading it's good? See post 7, ballpark 2 to 14 ohms. If it's outside that it's almost certainly bad. |
Posted by: mloret on 2022-02-11 16:48:55
When you guys say "the plug", do you mean the end of the cable or the plug in the mother board? I assume the end of the cable... |
Posted by: Skate323k137 on 2022-02-11 17:00:00
Yes, the end of the cable, so you are measuring resistance of the speaker itself and not something on the motherboard. |
Posted by: mloret on 2022-02-11 17:49:20
Yeah, nothing. My multimeter doesn't register any sort of change either when I put the probes in the end of the cable or when I touch it to the + and - of the speaker itself. So maybe speaker is toast? Of course, my old, cheap multimeter is difficult to read. Can you confirm that I have the right setting on it? |
Posted by: Skate323k137 on 2022-02-11 18:00:48
I think that setting should do. Touch the probes to each other and if you get a 0 or near 0 reading, then the meter works and your speaker is toast 🙁 |
Posted by: ironborn65 on 2022-02-12 07:38:26
what about the capacitors? I had the same issue with a SE/30, I'd closely check the capacitors and in case of doubt I would replace them all |
Posted by: Skate323k137 on 2022-02-12 07:40:32
Recap is a good place to start with a machine of this age for sure, but if the speaker isn't reading any impedence it's blown.
If the speaker isn't blown I would first reflow the logic board connector. However since it probably is, I would try to find any 4 or 8 ohm speaker laying around just to test for the boot beep. At that point you're looking at putting a connector on the temp speaker to test, or jumpering wires to the pins to hook it up. |
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