Video Noise, No Synchronous - Mitsubishi Diamond Pro 750SB Service Manual

3. VIDEO NOISE, NO SYNCHRONOUS

CHECK D116, D115
R108, R118
CHECK U501
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
FREQUENCY l501 SYNC "+"
NO
TO GND, D116 TO GND
CHECK HORIZONTAL
NO
FREQUENCY C359 TO GND