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6.5 Internet issues
6.6 No audio
Android system fails to surf
the internet
Notebook can surf the
internet after
connecting the network
cable
`YES
Whether it can log in
router normally?
YES
Choose router and
restore factory
settings
NO
Replace router
module
Whether the mode of
internet and wires
connection are correct
YES
YES
NO
Use a notebook
substitute the IFP to
check that whether
network is ok
Re-upgrade Android
system
Replace TV main
board
YES
YES
NO
Restore router
’
s
factory settings
Replace router
module
NO
NO
Only no sound on pc source
Check that the sound
setting and sound
drive is normal or not?
Re-install the windows
system
YES
No sound on all sources(PC,
Android, VGA etc.)
No audio
Replace OPS adapter board
Replace TV main board
Normal
NO
NO
Replace TV main board
Replace Speakers
YES
NO
Check that the android
sound setting is
normal or not?
Normal
YES
Check the connection of
internal speaker cable is
normal or not?
Re-plug the speaker cable or
replace it
NO
