24
15. No sound is output from Subwoofer
Start (MAIN PWB)
Check the input signal 20,21 and 22 pin of IC2.
Is the audio signal being input?
Check the output signal 39 and 46 pin of IC2.
Is a PWM being output?
Check the output signal between 1 and 2 pin of J2.
Is the audio signal being output?
Replace Main PWB.
Check the soldering of IC2.
Check the soldering of L4, L5, FB2 and FB4.
NO
NO
NO
Finish
Replace the speaker unit.
YES
YES
YES
To Next Page
Loading...
