Haier LE40K5000TF - Panel Failure Diagnosis

Trouble Shooting
• Mainboardnotwo
rk
• 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
 Pa
nelnotwork

1. Checkth
eLEDBacklight“set‐upIC”
outputandinputareworking.

2.V
erifyiftheMainboardoutputthe
rightOn/Offsignaltopowerboard;

3.V
erifyiftheMainboardoutputthe
LVDSsingaltopanelT‐conboard

4.V
erifyifthesoftwareistheright
versionofthismodel.

5.Chang
etheLVDSwiretocheckifit’s
broken.
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