Video Noise, Unsynchronous - Mitsubishi DPLUS 74SB -BKA Service Manual

3. VIDEO NOISE, UNSYNCHRONOUS

CHECK D124, R116
D109, R115, R117
CHECK R30X, FBT
PIN6
CHECK
Q101 G-S FREQUENCY
YES
SYNCRONIZE
NO
WITH H-SYNC
YES
CHECK
Q319 G-S FREQUENCY
SYNCRONIZE
NO
WITH H-SYNC
NORMAL OPERATION
6-4
CHECK HORIZONTAL
NO
FREQUENCY D124 TO GND
CHECK HORIZONTAL
NO
FREQUENCY C359 TO GND