Sanyo LCD-22XR8DA Service Manual page 32

2.3 Picture, but no sound
Check if PIN6, 7 of N408
is high voltage?
Check if V406 base is
low voltage
yes
Replace V406
Replace V408
yes
no
no
Check if V408 base
is low voltage
yes no
Replace N101
Check the wave of
PIN4,12 of N408
no
Check the wave of
N101 pin76,77
yes
Replace N214
30
yes
Replace N408
yes
Replace N214