Question about Sharp AQUOS LC-45D40U 45 in. LCD Television
When I plug it in,I can hear the two relays on the mainboard click,and the power light flashes green for a split second only once.Nothing else.No other colors on the power light,or a hint of a picture,or backlight lighting up.When I unplug the TV,the two relays click again.I have tested all of the capacitors on the main power board with an ESR meter,and they all seem alright.The power button board seems to tests alright as well.Nothing looks burned,or broken.What I think will help me get started beyond what I have already tested is the following.Am I supose to get more then 120V on the wires that go from the line filter board to the main power board?What does the line filter board do?And are the two relays on the mainboard supose to make a single click when the power cord is plugged in,and a single click when unpluged,or are they only supose to click when the TV is turned on,and off?Are there any know problems with this TV?I have already tried another IR board,but that didn't help any.I was thinking about getting another power button board,but everything seems to test alright on the one I have.Any help is greatly appreciated.Thank You very much!
Problem main power board,voltage aut ,not good.But problem transistors short.I am change transistors. But hundayi plazma not working.
Posted on Nov 04, 2013
CHECK THE FUSE NUMPTY
Posted on Aug 12, 2008
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Posted on Jan 02, 2017
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