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Old 05-10-2016, 11:23 AM   #7
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Join Date: Feb 2010
City & State: S.F. Bay area
My Country: USA
Line Voltage: 120V 60Hz
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Posts: 39,206
Default Re: Issue with acer v173 CCFL inverter

The PWM line on the power supply/Inverter board has the pull-up resistor to pull PWM LINE HIGH, the output of the MICRO controller IC does the PWM switching and it stuck ON so the output is at GND right now.
Never stop learning
Basic LCD TV and Monitor troubleshooting guides.

Voltage Regulator (LDO) testing:

Inverter testing using old CFL:

Tear down pictures : Hit the ">" Show Albums and stories" on the left side

TV Factory reset codes listing:
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