Philips DVP3366K, Service Manual, Page: 21 / 44

5-7
Distorted audio and loud noise
No
Yes
No
Yes
Yes
No
No
Distorted audio and
loud noise
Replace R84, R94,R100,R107,R116,R124
Check Q3
Replace Q11~Q19
Check whether the muting transistor
R84,R94,R100,R107,R116,R124 are
normal
Yes
Check whether the muting
transistor Q11,Q12,
Q13,Q15,Q17,Q19are normal
Checking the U6 leads the
feet has no to break to
open
&RUUHFWFRQQHFWLRQ
Replace R86,R87
Check the voltage on
pin3 or pin5 of U6 is OK.
(Should be 2.5~3.1V)
Check whether the U1 or
U6 powersupply normal
No
Yes
Check the power supply voltages
+12V to the operation amplifying
Q3 is normal.
Yes
Check U6
Replace U1 or U15
No
Yes
Trouble shooting chart