KDL-32HX750, KDL-32HX751, KDL-32HX753, KDL-32HX755, KDL-32HX757, KDL-32HX758, KDL-32HX759, KDL-40HX750, KDL-40HX751, KDL-40HX753, KDL-40HX755, KDL-40HX756, KDL-40HX757, KDL-40HX758, KDL-40HX759, KDL-40HX75G, KDL-46HX750, KDL-46HX751, KDL - Sony TV Service Manual (repair manual). Page 105

Read Sony KDL-32HX750 / KDL-32HX751 / KDL-32HX753 / KDL-32HX755 / KDL-32HX757 / KDL-32HX758 / KDL-32HX759 / KDL-40HX750 / KDL-40HX751 / KDL-40HX753 / KDL-40HX755 / KDL-40HX756 / KDL-40HX757 / KDL-40HX758 / KDL-40HX759 / KDL-40HX75G / KDL-46HX750 / KDL-46HX751 / KDL Service Manual online

KDL-32/40/46/55HX750,751,753,755,756,757,758,759,75G(AEP/UK/IT/NOR)
105
TROUBLE SHOOTING
3-3. NO POWER
No power
Check STBY_+3.3V
at 10 pin of CN6001
on the B* board
Harness
G* board
Replace the harness
between G* board and
B* board
B* board
NG
OK
NG
Symptom 
improvement
Long AC off
(> 15 min.).
Power protection or
CPU abnormal stop
NG
OK
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