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1.
No raster and no sound
Check the fuse
Check VD503
∼
VD506
V513
C507
Check loading voltages of
112
V
150
V
Check if the connector electrode
voltage of V552 is 26V.
Check if all loading resistors are normal
Check 12V
9V
5V
Check V552 or
CPU POWER
control circuit
Check D902
V902 and
V901
There is breakdown in
horizontal circuit and
N201
Check switch
power circuit
Check if rectifier
diodes breakdown
Replace the
rectifier diodes
Loading has
breakdown
Normal
Abnormal
Normal
Abnormal
Normal
Abnormal
Normal
Abnormal
Normal
Abnormal
Normal
Abnormal
4.
TROUBLESHOOTING