LG LG-V909DW - 4.17 HDMI trouble

4. TROUBLE SHOOTING
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Only for training and service purposes
LGE Internal Use Only
4.17 HDMI trouble
Follow below sequence.
HDMI must be displayed when you insert cable into tablet HDMI socket
Start
Press Power key
Turn the power on
Disconnect and reconnect
HDMI connector
Change
HDMI PCB
Change HDMI
FPCB
Change AP board
The End
Start
Disconnect
and reconnect HDMI
connector
HDMI display OK?
HDMI display OK?
HDMI display OK?
No
Yes
Yes
Yes
No
No
No
Yes