Read Sony KDL-37BX401 Service Manual online
Troubleshooting-1
No display on screen (screen is black, no power)
No power/ No video
Does power cord plug
in AC outlet?
in AC outlet?
Plug TV power cord
in AC outlet
in AC outlet
Does power cord of TV
set connect to PSU?
set connect to PSU?
No
Yes
Check if power cord plug
in PSU CN6101 tightly
in PSU CN6101 tightly
No
Can turn on TV(Green LED
light) by pressing power key of
remote controller or keypad?
light) by pressing power key of
remote controller or keypad?
No
Check power on PSU & MB (refer to
P.12 check power steps)
P.12 check power steps)
Yes
Yes
Video problem refers to
check video steps
check video steps
Audio problem refers to
check audio steps
check audio steps
Refer to System
Diagram 1
Diagram 1
If failure (Red) LED blink, please
refer to self-diagnostics function
refer to self-diagnostics function
PSU: Power Supply Unit
MB: Main Board
MB: Main Board
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