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Old 05-10-2016, 12:47 PM   #9
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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

You can leave the PWM wire unconnected which will drive the lamp at full brightness at all time which is not a good idea.
You have to come up with circuit to drive the transistor with PWM signal based around 200 or 300 Hz and able to adjust the pulse width betwen 35~100% range.
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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