Macintosh iivx Speaker and Headphone Jack Buzzing Noise?

jajan547

Active Tinkerer
Mar 25, 2022
732
295
63
North Carolina, USA
Hello everyone I have yet another iivx board. It appears everything works perfectly except the headphone jack and speaker (whichever you use) crackle, there is only this noise on boot up presumably the chime and then it goes away. I should also add if a program or game runs in place of sound I get crackling. Any ideas what it could be or is it yet another failed Apple sound chip?
 
Last edited: