820-3115 No Chime Turns on and works

[supamodz]

Hi guys working on a 820-3115 unit turns on but no chime tried pram reset and still no chime changed speaker too any ideas what can cause this problem

 

[aprendiz]

Do you have CPU Vcore???

 

[supamodz]

I ran the hardware test and it passed. Would it have failed if cpu vcore was missing?

 

[aprendiz]

Sorry, I absolutely misunderstood the question..... .... Do you have sound on OS?? check right speaker connector...

 

[supamodz]

I'm getting no speaker audio I checked power to audio chip and is getting power any ideas no water damage in that area

 

[aprendiz]

Do you have audio in headphone??? If yes, replace headphones jack....

 

[supamodz]

No audio from headphones either

 

[aprendiz]

Is output device recognized on OS??

 

[supamodz]

Yes now here is the weird thing, I was poking around the audio chip and got sound when I tried the headphone no sound I restarted the computer and then sound was gone again

 

[dukefawks]

Check all power at the codec chip and the 4.5V from U6200 to the codec. L6200 and 6201 are suspect.

 

[Glenn]

Pram reset ? work for me..