Haier 40D2500 Service Manual page 42

No sound No picture
Verify if the Power has
5Vstb output
Verify if CN4 Pin3/4 has 5V
input
Verify if CN2 Pin1 has 12V
input
Verify if DC/DC convertors have
the right output
Change the software
41
Yes
Yes
No
Yes
No
Yes
Service Manual
Model No.:
No
Change the
Power supply
Change Power board
No
Change Power board
Change corresponding
DC/DC convertor
Still having
Problems
40D2500
Change
Mainboard