Question about Sony 40 KDL40EX720 3D LCD TV
Picture comes after 30 min distorted with green patches
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Posted on Jan 02, 2017
SOURCE: Same problem: picture goes out
Sounds like you need to replace the lamp. The owners manual should show you how to replace the lamp. You can order the lamp through Sony on their website. Good Luck
Posted on Jan 30, 2008
Most likely this is caused by a defective main board. Changing the main board will fix the issue about 95% of the time.
To be absolutely sure, the voltages need to be checked on the power supply. If they are not the values listed in the service manual, then you should replace the power supply instead (accounts for the other 5% of the time).
Posted on Oct 07, 2009
SOURCE: my Sony KDF-E42A10 turns on
It is symptom of weak lamp that reaches at end of its working life, replace lamp in tv to fix the issue.
Lamp replacement procedure is easy and written in user manual.
Posted on Aug 31, 2010
Seems lamp issue that reached to end of its working life and requires replacement.
If lamp has not been replaced in last 2-3 years, change it.
Posted on Sep 18, 2010
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