Macbook A2337 Right Speaker Not Working

2informaticos

Administrator
Staff member
I hope you didn't connect the switch as before mentioned!

Use two switches, one more for power on/off.
This machine should appear in DFU.
 

Instafixx

Member
Switch On / Off
One Wire to Ground
One to Pin 2 SWV012

DFU Switch
One Wire to PP1V25_S2 [SWV011]
One Wire to SOC_FORCE_DFU [RV020]

Is it okay ?
 

2informaticos

Administrator
Staff member
Read and follow the instructions.
Don't forget to force the machine off, pressing onoff switch for 8s; is the first step.
Then press DFU switch alone, for aprox 3-5s.
 

Instafixx

Member
Yes sir.
I press the On/Off Switch and the machine turn off.

Then i long press the dfu button for as long as 10s.

But nothing.
 

2informaticos

Administrator
Staff member
3s should be enough, no more than 5s.
If fails, long press again onoff switch and repeat.

You can also try pressing both switches for 5-10s.
Then release onoff and maintain DFU switch 3-5s more.
 

Instafixx

Member
Not working.
I re soldered the switches as well.

SOC_DFU_STATUS goes high but it is not detected in DFU.

I also tried with another working machine - it worked and revive was successful. But this board isnt popping up on system configuration.
 

2informaticos

Administrator
Staff member
You have almost fully working machine, which can't put into DFU.
I don't understand why.
Strange to think that M1 damage on audio side can block it in this way...
 

Instafixx

Member
If i long press the on/off key for startup options - i get “Loading Startup Options” and then the exclamation again.
 

2informaticos

Administrator
Staff member
Apart of DFU restore, I can't see other option.
You should play with external switches method, until get the machine into DFU.
 
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