Philips DVP3680 Service Manual page 18

3, No Audio output
KARAOKE
No KARAOKE output
Check the Audio output when
DVD/CD PLAY
play the KARAOKE disc and then
set the menu of setup and to set
the kalaok to on
Sing with MICROPHONE and
the audio will output from the
TV
Test Finish
OK
2-4
NG
check the
MICROPHONE is
on
NG
The Karaoke board
is broken .
Replace The Karaoke
board PCBA