Vizio vw42l looks like strobe light sounds like helicopter - AVS Forum
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post #1 of 3 Old 08-06-2013, 07:15 AM - Thread Starter
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I have a Vizio vw42l that flashes like a stobe light. When this happens there is a flashing blue light on the master backlight inverter and a clicking noise in the center of the power supply. Pwr supply voltages all check out. Also there are two 35Volt 470 uF caps on the master and slave B L inverters that look bulged. If you touch the top of the lower cap on the master the strobing stops. I originally thought there was a cold solder joint so I resoldered the caps. This worked temporarily. I powered off after 2 hrs and powered on just to check. It was right back to where I started. What should I look for next?
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post #2 of 3 Old 08-06-2013, 07:40 AM
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Did you replace those caps? Probably less than a buck apiece.


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post #3 of 3 Old 08-06-2013, 08:35 AM
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Quote:
there is a flashing blue light on the master backlight inverter

is this an LED or is it actually arcing over?
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