Huvitz Excelon - Malfunction at Display

EXCELON
Trouble shooting manual I -4
4. Malfunction at Display
4.1 LCD is not on.
4.2 Screen freezes.
Yes
Is the system on?
No
Check the power.
Refer to 3.
Yes
Is the cable between Main
board and GUI board
disconnected?
Yes
Connect again
firmly.
No
Is the yellow LED flickering
on GUI board?
No
Replace the GUI
board.
Yes
Replace the LCD.
Refer to page 10.
Is the yellow LED flickering
on GUI board?
No
Replace the GUI
board.
Yes
Is the Software version
proper?
No
Upgrade the
Software version
to the latest.
Check the cable connection
between GUI board & Main
board.