820-3332-A

[andrespi]

Hello, I have a problem on this board that when connecting headphones it only sounds through one earphone,
the tests that made logical headphones other pass the same
I also tried with another audio jack port pass the same problem
preferences system balance sound is ok
I would like to know where do I start to measure where the problem is on the board

 

[2informaticos]

Check all traces and small coils that connect to headphones.

 

[andrespi]

I already check traces and small coils are all fine

 

[2informaticos]

Internal speakers sound correctly?

 

[andrespi]

yes

 

[2informaticos]

Check diode mode to ground at AUD_HP_PORT_L/R on J6701; w/ and w/o cable connected.
If all good (includin L6704/05), then change U6201.

 

[andrespi]

mode diode AUD_HP_PORT_L=0.350 measured in ohms=259 ohms. on j6701 and l6704. w/o cable connected.
mode diode AUD_HP_PORT_R=0.49 measured in ohms=9.63 Kilohms. on j6701and L6705. w/o cable connected.

with cable connected same values

on A board good condition same reference 820-3332 mode diode AUD_HP_PORT_L=0.76 AUD_HP_PORT_R=0.76 in ohms 9.7k in both

 

[2informaticos]

Remove L6704 and confirm if the problem is on audio codec side.

BTW, check all the points in the same manner; red probe connected to ground!

 

[andrespi]

What all check points do you mean?

 

[2informaticos]

Did you measure all diode mode with red probe connected to ground???

 

[andrespi]

yes, I thought you said measure all ic audio codec points in diode mode

 

[2informaticos]

You've got one different reading.
If all readings done with red probe connected to ground, then you have a problem with that line.
"Remove L6704 and confirm if the problem is on audio codec side."

 

[andrespi]

ok thanks solved, He also has speaker problems I bought on ebay but they only worked a month, Any good quality seller where do you buy?