Toshiba D-VR4SU Service Manual page 90

PLAYBACK PICTURE IS NOISY
(EVEN AFTER CLEANING HEADS)
Is noisy a wave of video
signal at pin 26 of IC101 ?
YES
Is noisy a wave of video
signal at pin 7 of IC8308 ?
YES
Is noisy a wave of video
signal at pin 19 of IC3001 ?
YES
Check J8005 at pin 5
and peripheral circuit.
TROUBLESHOOTING GUIDE
NO
NO
NO
E-16
Check CYLINDER.
Change IC8308.
Change IC3001.
D-VR4SU/D-VR4SC