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Haier HL42XD1 Service Manual page 21

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42 LCD TV
Key Board
OSD is unstable or not working
Is Key Pad Board connecting normally?
Is Button Switch normally?
Is Key Pad Board Normally?
Check Main Board
Y
Y
Y
N
Connect Key Pad Board
N
Replace Button Switch
N
Replace Key Pad Board
22
Haier HL42XD1
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