LG LN61A Manual De Servicio página 17

2. No picture
(1) Symptom
1) Some mode doesnt display.
2) Front LED is green
3) The set still discharge a little
(2) Check follow
1) RF-mode doesnt display
Yes
Is the LVDS cable
connected?
No
Insert the LVDS
cable exactly
2) AV/Component-mode doesnt display
Yes
Is the LVDS cable
connected?
No
Insert the LVDS
cable exactly
3) RGB/HDMI-mode doesnt display
Yes
Is the LVDS cable
connected?
No
Insert the LVDS
cable exactly
Yes
Is the Tuner cable
connected?
No
Insert the Tuner
cable exactly
Are good some
Yes
elements(C, R, L, or
Diode) at path?
No
If it dead or short,
exchange this
elements
Are good some
Yes
elements(C, R, L, or
Diode) at path?
No
If it dead or short,
exchange this
elements
Are good some
Yes
elements(C, R, L, or
Diode) at path?
No
If it dead or short,
exchange this
elements
Is VCT-P IC good?
No
Exchange the VCT-
P IC
Yes
Check the EDID
data
No
Download the EDID
data
- 17 -
Are input voltage, I2C,
Yes
and CVBS output
good in Tuner?
No
Exchange the Tuner
Yes
Is AD9381 good?
(only _ HDMI)
No
Exchange AD9381
IC
Is VCT-P IC good?
No
Exchange the VCT-
P IC
Is VCT-P IC good?
No
Exchange the VCT-
P IC