Distorted audio with new MacEffects Thunder PDS accelerator in an LC II

[jasa1063]

I just picked up a MacEffects Thunder PDS accelerator. With the accelerator installed the audio is distorted. Has anyone else had this problem with an LC II and a accelerator installed? If so, any known workarounds?

 

[ScutBoy]

Accelerators and sound don't always play well together. In the old times there was usually a control panel or init that would modify the sound code to get the timing correct. Don't know if such a thing is necessary for this particular accelerator.

 

[jasa1063]

The response I got back from MacEffects was that the issue is most likely due to issues with the sound chip at UB10. I checked that area with a 30x loupe and did not see any corrosion. They offered me a replacement accelerator or a refund, but I think it is something with the logic board at this point. If I power up the Mac LC II and the power it off an on again the sound is Ok. I can do any number of power cycles in succession after that and the sound is fine. Let it sit for 5 minutes and the issue comes back. I am just going to keep the accelerator and dig a little deeper with LC II logic board.