Distorted audio and loud noise
Distorted audio and
loud noise
Yes
Trouble shooting chart
Check the power supply voltages M5V to the operation amplifying Q544 is normal.
Yes
Check whether the muting resistance R369,R375 are normal
Yes
Check whether the muting transistor Q361,Q362 are normal
Yes
Checking the U361 leads the feet has no to break to open
Yes
Check the voltage on pin3 or pin5 of U361 is OK.
(Should be 2.5~3.1V)
Yes
Check whether the U1 or
U361 powersupply normal
Yes
Replace U1 or U361
No | Check Q544 |
|
No
Replace R369,R375
No
Replace Q361,Q362
No | Correct connection |
|
No
Replace R362,R363
No | Check U361 |
|
|
