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Old 07-12-2016, 03:11 PM   #1
tech2014
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Join Date: Aug 2014
City & State: Saskatchewan
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Default Sony KDL-46EX400 startup issue

I have a Sony KDL-46EX400 that is acting strange. When you power it up, the backlight will come on for a second, along with a loud buzzing sound. It tries to turn on 3 times, then goes into standby. The LED flashes 6 times.In the service manual it indicates a backlight problem, and the possible cause it says LCD panel.

When I remove the connections going from the power supply to the inverter board, the tv doesn't buzz anymore when trying to power up. It just tries turning on and chirps each time(rather then buzz), then goes into standby. Would this be a bad panel or inverter board? See pics below.

TV1.jpg

TV2.jpg

TV3.jpg
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