Read LG 32LC3R (CHASSIS:LP61A) Service Manual online
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2. No picture
(1) Symptom
1) Some mode doesnt display.
2) Front LED is green
3) The set still discharge a little
2) Front LED is green
3) The set still discharge a little
(2) Check follow
1) RF-mode doesnt display
Is the LVDS cable
connected?
connected?
No
Yes
Is the Tuner cable
connected?
connected?
No
Yes
Are good some
elements(C, R, L, or
Diode) at path?
elements(C, R, L, or
Diode) at path?
No
Yes
Are input voltage, I2C,
and CVBS output
good in Tuner?
and CVBS output
good in Tuner?
No
Is VCT-P IC good?
Insert the LVDS
cable exactly
cable exactly
Insert the Tuner
cable exactly
cable exactly
If it dead or short,
exchange this
elements
exchange this
elements
Is the LVDS cable
connected?
connected?
No
Yes
Are good some
elements(C, R, L, or
Diode) at path?
elements(C, R, L, or
Diode) at path?
No
Yes
Is VCT-P IC good?
No
Insert the LVDS
cable exactly
cable exactly
If it dead or short,
exchange this
elements
exchange this
elements
Exchange the VCT-
P IC
P IC
Exchange the Tuner
Exchange the VCT-
P IC
P IC
No
Yes
Is the LVDS cable
connected?
connected?
No
Yes
Are good some
elements(C, R, L, or
Diode) at path?
elements(C, R, L, or
Diode) at path?
No
Yes
Check the EDID
data
data
No
Yes
Is AD9381 good?
(only _ HDMI)
(only _ HDMI)
No
Is VCT-P IC good?
Insert the LVDS
cable exactly
cable exactly
If it dead or short,
exchange this
elements
exchange this
elements
Download the EDID
data
data
Exchange AD9381
IC
IC
Exchange the VCT-
P IC
P IC
No
Yes
2) AV/Component-mode doesnt display
3) RGB/HDMI-mode doesnt display
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