23
4. No display
Check the B/L
signal is available?
Replace main board
Replace the power board
Panel Vcc = 5V?
Replace the Panel
No display (LED white)
Replace the main board
Check the backlight is
“On”?
Check the LVDS cable
Reinsert or replace the
LVDS cable
Replace the main board
Replace the Panel
No
Yes
Yes
No
Yes
No
No
Yes
Yes
No
Yes
No
Power board output
᧹
16V?
Check TV is under control and power
on/off by remote control and power key?
Summary of Contents for L19
Page 17: ...17 4 Mechanical Instructions Step1 Remove the STAND ASS Y Step2 Remove the REAR COVER ...
Page 19: ...19 Step 5 Separate the MAIN FRAME and PANEL Step 6 Remove the KEY BOARD IR BOARD and SPEAKERS ...
Page 27: ...27 6 PCB Layout 6 1 Main Board 715G3759M02000005K ...
Page 28: ...28 ...
Page 29: ...29 6 2 Power Board 715G3754P01W30003H ...
Page 30: ...30 ...
Page 31: ...31 ...
Page 32: ...32 6 3 Key Board 715G3303 2 6 4 IR Board 715G3963R01000004S ...