Haier LE55K5000TFNa Service Manual page 59

AV No sound but have picture
Check if there is sound input signal
Yes
Check if there is signal at C222and
C223
Yes
Check if there is signal at L201 and L202
Yes
Check HEADPHONE have sound
Yes
Check the speakers
Still having problems
No
Check the P8 JACK
No
Replace U201
No
Check P1402 JACK
Change Mainboard