Solved Mystery No Sound O I Card Speakers Logic Board Macbook Pro 15 Core 2 Duo Models A1226 And A1260
Chosen Solution My MBP 4,1 (model A1260) stopped making sounds suddenly… I’ve read hundreds of posts on the internet but nothing seems to help. Here are some symptoms : Built-in speakers don’t make any sounds. No sound coming from output jack (headphones or external speakers). The mic (line-in) jack don’t work either. The power connection and left USB works fine. -NO RED LIGHT coming from headphone jack… so its not the optical speaker switch problem like most have....