Sanyo LCD-39XR12F - Page 24

3．No sound, but picture is normal:
Yes No
No
Yes
No
Yes No Yes
No sound
Check if level of
N606-PIN19&25
are all high?
Check if level of
V609-b is low?
Check if there is
signal inputted to
N606-PIN15&20&21
&22 ?
Check power voltage
of N606.
Check IIS
(signal input
circuits) on main
board.
Check Reset &
Mute circuits of
power amplifier.
Replace
V609
Check +12V on
power board.
Check IIC signal of
N606- PIN23&24.