Hi everyone.
Can anyone help with a non-working BT speaker?
Unfortunately there is no service manual and I really doubt there is any. I tried searching for datasheet for the BT module, but again no success. edit -
So here are the symptoms:
it turns on and connects to a device, but as soon as any music is played it reboots.. I mean, a song starts and milliseconds after that it shuts down and boots up again. Without anything played it stays connected.
What I've tried:
replaced the thru-hole cap - no change
bridged the AUX so that it always use the BT input
reheat the smd stuff - no change
replaced the BT crystal and the BT cpu(?) from another module - did not work ( unfortunately the other BT module has different layout and it cannot be used on this board )
removed the class D amp IC - no change
run the thing without the speakers - no change
bridged the upper end of R37 to the solder blob on the other side of the board ( suspected bad hole connection/bridge - the green circle )
What I've discovered - when heat is applied in the red circle area, the module gets better.. I managed to get about half a minute sound out of it... still not crystal clear ( some noise and crackles ) but definitely sound.
So any ideas?
Can anyone help with a non-working BT speaker?
Unfortunately there is no service manual and I really doubt there is any. I tried searching for datasheet for the BT module, but again no success. edit -
So here are the symptoms:
it turns on and connects to a device, but as soon as any music is played it reboots.. I mean, a song starts and milliseconds after that it shuts down and boots up again. Without anything played it stays connected.
What I've tried:
replaced the thru-hole cap - no change
bridged the AUX so that it always use the BT input
reheat the smd stuff - no change
replaced the BT crystal and the BT cpu(?) from another module - did not work ( unfortunately the other BT module has different layout and it cannot be used on this board )
removed the class D amp IC - no change
run the thing without the speakers - no change
bridged the upper end of R37 to the solder blob on the other side of the board ( suspected bad hole connection/bridge - the green circle )
What I've discovered - when heat is applied in the red circle area, the module gets better.. I managed to get about half a minute sound out of it... still not crystal clear ( some noise and crackles ) but definitely sound.
So any ideas?
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