Haier LE40K5000TF Service Manual page 63

Trouble Shooting
• Mainboard not work
• 1. Check the "power board " in
main‐board whether has 12V and
5V 5vsb output .
• 2.Verify if the DC/DC convertors
have the right output (1.18V,1.5V)
• 3.Verify if LDO have the right
output (3.3V,1.2V)
• 3.Verify if the
Mainchip(MSD6308RTEM), DDR,
AudioAMP...solder well;
• 4.Verify if the FLASH(U1202) has
the right software and work well;
• 5.Verify if the Y201(Crystal) has
the right frequency
Panel not work

1. Check the LED Back light "set‐up IC "

output and input are working .
2.Verify if the Mainboard output the

right On/Off signal to power board;
3.Verify if the Mainboard output the

LVDS singal to panel T‐con board
4.Verify if the software is the right

version of this model.
5.Change the LVDS wire to check if it's

broken.
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