Insignia NS-LCD37HD-09, Service Manual

Page: 33 / 43

31
2.3 Picture, but no sound(TV input)
2.4 Picture, but no sound(channel except TV)
Check if PIN10,27 of
NV10 is high-level?
Check if DV2 positive
terminal is low-level
Check PIN12 and
PIN25 wave of NV10
Check PIN76 and
PIN77 wave of NC1
Replace NV2
Replace NV10
Replace NC1
no
yes
no
yes
no
yes
low high
Replace VV4 Replace NC1
Check if PIN4,32
of NV10 is
normal?
Check if DV2 positive
terminal is low-level
Check if PIN10 and
PIN27 of NV10 is
high level?
Replace VV4
Replace
NV10
Replace NC1
low
yes
no
yes
no
low
high
Check power board
Check the
wave of NV10
pin 12,25
yes