System 7.5.3: Apple Telecom & No Sound on Pwr Mac 9500 (3/96)

After installing Apple Telecom 2.x on my Power Macintosh 9500, which I recently upgraded to System 7.5.3 (using System Update 2.0), I can no longer hear any sound. Is there a compatibility problem between Apple Telecom and System 7.5.3?
On Power Macintosh 9500 computers, the Apple Telecom installer places the Audio Tune-up extension in the Extensions folder. This extension fixes a sound problem under System 7.5.2 when using the Geoport Telecom Adapter.

The Audio Tune-up extension is built into System 7.5.3. However, if you still have it installed under 7.5.3, you will experience a problem with sounds. To resolve these problems, simply remove the Audio Tune-up extension.


Published Date: Feb 18, 2012