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Old 03-11-2017, 09:11 AM   #16
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Join Date: Aug 2015
City & State: Cardiff
My Country: Wales
Line Voltage: 230V AC, 50Hz
I'm a: Hobbyist Tech
Posts: 4,929
Default Re: LG LCD 42LD750 Backlight flashes 4 times, then tv off.

OK so placing your probes into the High Voltage socket at the back of the panel makes the set light up. If it's a connection problem then possibly by you inserting the meter probes you are helping to make a good connection.
Put your capacitors back in circuit and insert the meter probes as you have earlier but remove the leads from your meter. What happens?
Willing to help but I'm no expert.
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