TCL LCD-27VSE - LED and Keyboard Fault Diagnosis

27’’ LCD TV Color Monitor TCL LCD-27VSE
26
Change Keyboard or
Main board
Change Keyboard or
Main board or wire
Change Keyboard
Change Main board
Change Main board
Change LVDS Wire
LED Off
Change Keyboard or
Main board or wire
Change Keyboard or
Main board or wire
A
Change Wires
LED Abnormal
LED Dark
LED Display
Abnormal
LED Flicker
Abnormal
Keyboard
Check Wires
Check Keyboard
Check Main board
(DDC) U301 Rd
Abnormal
OSD
Check Main board
Check LVDS Wire
Tes t
Next Step
Completed