Hi there my macintosh lc now works and the speakers seem extremely gritty. On YouTube the boot chime sounds really clean compared to mine. Would it be worth getting a new set of performa 400 speakers to solder in?
Mac OS 8.6 or Earlier
Hi,
Have internal wires/connectors been checked (disconnected and reconnected)? Also, what about the speaker jack? The contact that breaks the circuit to the internal speaker when external headphones/speakers are connected may have become corroded. If so, try a small amount of an appropriate contact cleaner. Any change in sound quality when headphones or external speakers are in use?
Jan
Thanks for your reply, was playing sim city and they packed in! checked it was still trying to use build in speakers and is not on mute. no boot chime or anything. I will look into what you said.
just as some extra information, I turned to plug the sound lead from my tv into the headphone jack and it wouldn't recognise any external speakers to connect to. Does this help indicating anything
thank you jan!
In order to avoid any additional complication, try to connect just headphones or appropriate external speakers to this mono sound output jack. If you have access to another small speaker with the correct impedance, you may want to temporarily replace the existing internal speaker for a test. Bad (leaking/bulging/cracked) electrolytic capacitors could also in certain cases affect sound circuits.
Jan
After doing some tests, I have found that the speakers crackle when a headphone jack is plugged in. I think the latch that shuts off the internal speakers has corroded. It has been in a loft for 11yrs. Thanks
Macintosh lc speakers very gritty
