Sanyo AVL3210 Service Manual page 22

3.3.no sound (TV input)
Check if PIN2, 8, 13 and
18 voltage of NA6 is
normal?
Check power board
yes
no
Check PIN3 and
PIN7 output wave of
NA6
no
Check PIN10 wave of
NZ100
no
Check PIN11 wave of
TUNER1
no
Replace TUNER1
20
yes
Replace NA6
yes
Replace NS4
yes Replace NZ100