[SOLVED]820-3024 no startup sound

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Glenn

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Have a macbook air (820-3024) white no happy apple startup sound. Where should i start troubleshooting?

ASD passed without any errors
 
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Glenn

New member
Now i feel like lost in space... Im pretty new in motherboard.. How to check that CPUIMVP_TON have cpu vcore?
 

dukefawks

Administrator
It is working so TON resistor is fine. I assume you did a PRAM reset.

All audio circuitry is located on IO board so try new IO board and cable first.
 
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