Haier L40R1, Service Manual

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First, check cables which connect with PSU ， then check as follows
1) Check input voltage (CNA1)
2)Check output voltage
(CND1)
10.1.3 No sound
First
，
check cables which connect with PSU
，
then check as follows
1) Check input voltage as NO picture
2) Check speaker output
10.2 PSU failure check
State: No power
First, check cables which connect with PSU, then check as follows
1) Check PSU input voltage
（
AC input
）
(CON1)
2 ） Check PSU output voltage orderly (CON2)