Video Noise, Out Of Sync - NEC MultiSync V720 Service Manual

3. VIDEO NOISE, UNSYNCHRONOUS
CHECK C114, R116
D109, R115, R117
CHECK C132, R139,
D115, R138, R140
CHECK
Q101 G-S FREQUENCY
YES
SYNCRONIZE
NO
WITH H-SYNC
YES
CHECK
Q102 G-S FREQUENCY
SYNCRONIZE
NO
WITH H-SYNC
NORMAL OPERATION
34
CHECK HORIZONTAL
NO
FREQUENCY C114 TO GND
CHECK HORIZONTAL
NO
FREQUENCY C132 TO GND