Repair Flow Chart:Trouble Condition
Green Power LED and LCD backlights are ON,but no video or OSD.
LCD backlights are ON,
but TV has NO VIDEO or OSD.
On analog board:
Is the 12V supplied from “K17 Pin 8/9”?
On digital board:
Is power 12V supllied from “K5A Pin2”?
Replace“Power board” and
“Wire harness”.
On digital board:
Is power 12V to TCON supplied
from“K5LV Pin29/33/37” ?
Analog board is not working.
Replace “analog board”.
Is LVDS clock outputed?
(see TABLE*1.0)
Confirm LVDS cable connection
and check for video OSD again.
T.Cnt.Board or LCD panel is not working.
1st:Replace“T.Cnt.Board&LVDS Cable”.
If T.Cnt.board&LVDS cable do not correct
problem,then 2nd:Replace“LCD Panel”.
Digital board is not working.
Replace “digital board”.
Digit board is not working.
Replace “digital board”.
If the clock output is OK,the digital board is
normally OK,but can not be 100% sure.If
the T Cont Board &LVDS do not the correct
problem,please try the digital before ordering
a panel.
No:0V
Yes
No:0V
Yes:12V
No:0V
No:0V or 1.1Vconstant
Yes
Yes:12V
Page 3
(TABLE*1.0)Main board:"LVDS Clock"Test Points
32" Models
LVDS Clock on digital board
DP32640-11 N8LA
DP32642-00 Z6TE
K5LV Pin#26 clock+
K5LV Pin#28 clock-
Note:The bandwidth of the oscilloscope and probe must be at least 100MHZ or higher to check if the clock pluse exists.
