Haier L22C360 - 9-2. Main Board Failure Check

9-2. Main board failure check
State: No Sound
No Sound
(All Mode)
Check the input
Source
Change Source input
Check the
input/output
Re-soldering or change
IC U13
Check the
input/output
Re-soldering or change
IC U55
Check the
input/output
Re-soldering or change
IC U2
Check the
Speaker
Change the Speaker
Check the
Sperker wire
fail
fail
fail
fail
fail
pass
pass
pass
pass
pass
IC U705
IC U10
IC U706
Service Manual
Model No.:
-40 -