Hitachi 32LD7800TA Service Manual page 43

[ Sound Circuit (MAIN) ]
No sound of TV(main)
Exchange Video
Change back original
Video PWB
Change back original
Formatter PWB
Exchange tuner
Change back original
Tuner PWB
Exchange Joint PWB
PWB
Still no sound
Exchange
Formatter PWB
Still no sound
PWB
Still no sound
Finish repair
32LD7800TA (PW2L)
sound (normal)
Finish repair
sound (normal)
Finish repair
sound (normal)
Finish repair
43