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820-2915-B Headphone jack problem
- Thread starter MaxFix
- Start date
OSX reacts when plug/unplug the headphones?
Check audio device properties.
Clean audio jack properly, vieos available on YouTube...
Check audio device properties.
Clean audio jack properly, vieos available on YouTube...
When I first start OSX, headphones work and is detected in audio device properties.
If I disconnect and reconnect them, they are no longer detected in audio properties.
If I restart the machine while the headphones are plugged-in they will work again. And I can reproduce it every time. Not a random issue. Strange right?
If I disconnect and reconnect them, they are no longer detected in audio properties.
If I restart the machine while the headphones are plugged-in they will work again. And I can reproduce it every time. Not a random issue. Strange right?
Disconnect/reconnect headphines few times once in OSX.
See if something change.
If yes, should be dirty audio connector.
Clean it anyway...
See if something change.
If yes, should be dirty audio connector.
Clean it anyway...
Check reaction on detect circuits from page 61 (Q6801-03), when connect/disconnect headphones.
Also check if headphones comes back if you just close/open lid.
Also check if headphones comes back if you just close/open lid.
"Headphones detected after close/open lid."
I was expecting to check when headphones not available.
See if can recover without shuting down the machine; clos/open lid only.
"Q6801-03 - 4.3V"
3 transistors, with 3 and 6 pins; what should I understand???
I was expecting to check when headphones not available.
See if can recover without shuting down the machine; clos/open lid only.
"Q6801-03 - 4.3V"
3 transistors, with 3 and 6 pins; what should I understand???
Sorry if I was confusing.
"Headphones detected after close/open lid." - In OS I plug in headphones and they are NOT detected. I close and open lid and they are suddenly detected.
All e transistors react when I plug in headphones.
Q6800 pin 3 voltage drop from 2.37V to 0V
Q6801 pin 3 voltage drop from 4.32V to 0V
Q6802 pin 3 voltage drop from 4.45V to 4.16V
"Headphones detected after close/open lid." - In OS I plug in headphones and they are NOT detected. I close and open lid and they are suddenly detected.
All e transistors react when I plug in headphones.
Q6800 pin 3 voltage drop from 2.37V to 0V
Q6801 pin 3 voltage drop from 4.32V to 0V
Q6802 pin 3 voltage drop from 4.45V to 4.16V
When headphones not detected, there is still sound on internal speakers?
The f***g detection circuit can make you get crazy.
If headphones recovered after close/open lid, I will not waste more time.
Unless you have free time now, with the f***g crisis...
The f***g detection circuit can make you get crazy.
If headphones recovered after close/open lid, I will not waste more time.
Unless you have free time now, with the f***g crisis...
Remove R6805/13 and test again.
Check integrity of all resistors connected to AUD_SENSE_A line.
Check integrity of all resistors connected to AUD_SENSE_A line.
I know this thread is exactly 2 years ago, I came across the same exact symptom.
It turned out being a broken trace on AUD_IPHS_SWITCH_EN between a test pad and U2152.
The test pad is next to R6880-1 / U6880-3 (under the annoying foam).
U2152 doesn't show up on boardview but it's the same on 820-3215 (U2652).
Probably other issues may cause the same symptom but I thought it may be helpful for someone.
It turned out being a broken trace on AUD_IPHS_SWITCH_EN between a test pad and U2152.
The test pad is next to R6880-1 / U6880-3 (under the annoying foam).
U2152 doesn't show up on boardview but it's the same on 820-3215 (U2652).
Probably other issues may cause the same symptom but I thought it may be helpful for someone.