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Troubleshooting For Function Key - Hisense LCD40V57CA Service Manual

Liquid crystal display television, chassis: mst6
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7.2 Troubleshooting for Function Key

Buttons does not work
YES
Replace tact switch
Check switches
NO
YES
Replace Key BD
Check key board
NO
Check Key BD cable
YES
Change Key BD cable
OK
NO
Replace main board
Hisense Confidential
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