Read Sony KDL-32BX301 Service Manual online
Troubleshooting-2
Check power steps
Does PSU have
STBY3.3V output?
STBY3.3V output?
No
Yes
PSU failure
Does PSU have
REG12V output?
REG12V output?
No
Have 5V on MB?
Check MB IC231
Check PSU
CN6401 pin3
CN6401 pin3
Yes
Hi (2V-3.3V)Æ Power ON
Low(0V-0.8V)Æ Power OFF
Low(0V-0.8V)Æ Power OFF
Have 1V on MB?
No
Yes
No
Check MB IC232
Yes
Have +3.3V
SW on MB?
No
Check MB IC267
No
Have +1.25V on MB?
Yes
Check MB IC268
Have +DDRV on MB?
Yes
No
Check MB IC269
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