Haier LE55Q6500U, Service Manual

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Mainboardnot work
1.check if the power supply have 12V and 5V output.
2.Verify if the DC/DC convertors have the right output (3.3V,1.8V,1.2V).
3.Verify if the Mainchip(MSD6306PUS),
DDR2, AudioAMP…solder well;
4.Verify if the FLASH(U18) has the right software and work well;
5.Verify if the Y1(Crystal) has the right frequency
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Panel not work
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1. check if the voltage input and output of blacklight power is working normally.
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2.Verify if the Mainboard output the right On/Off signal to power board.
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3.Verify if the Mainboard output the LVDS singalto panel T-con board.
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4.Verify if the software is the right version of this model.
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5.Change the LVDS wire to check if it’s broken.
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3. Other problem
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Power board not work
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1.Verify if the power cord connect well?
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2.check if the power supply if working normally ; check if the power supply of
+5Vstandby is working normally;
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3. check if the POWER ON/OFF voltage is high pressure;
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4.check if the power supply have +12V/+5V output;
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5.Check if Main board / LVDS wire / Panel are in good condition ?