Hisense WFU7012 Service Manual page 40

9. TROUBLESHOOTING
BUTTON DOESN'T WORK
Is the connector connected
to PCB / display LED
disconnected or
disassembled?
No
Is the button of panel stuck?
No
Reconnect
Yes
or repair the
connector
Repair the
Yes
button
37
Is the display PCB
broken?(check the buzzer
sound and LED light while
push the button.)
Repair the
Yes
PCB /
Display LED