Hitachi 32LD7200 Service Manual page 38

[ Signal Circuit ]
picture (normal)
No picture
no picture of TV
Is
the waveform
at pin 49 of PTV2
(TV, CV)?
No
Exchange tuner
PWB
Change back original
Tuner PWB
32LD7200 (PW2L)
Yes
Exchange Video
Change back original Video PWB
Exchange
Formatter PWB
Change back original Formatter PWB
Exchange Panel
Change back panel
Exchange Joint PWB
Finish repair
37
picture (normal)
PWB
No picture
picture (normal)
No picture
picture (normal)
No picture
Finish repair
Finish repair