32LG6000 (CHASSIS:LD89A) - LG TV Service Manual (repair manual). Page 14

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NG : always RED

No problem

No problem

Check LED A’ssy color.

Check remote control

Power key off

Replace LED A’ssy.

Check P502,501 VDD voltage(pin1~4) 12V
if not OK -> Check Q501,L502,500, PANEL_VCC_EN signal
Check LVDS data signal(pin11~22, pin27~28)
If not OK -> Replace IC100(Replace Main B/D)

No problem

No problem

No problem

Check FRC B/D
1. P102 pin(9~13) EN signal
2. Pin1,2:6V, pin4:3.3V, pin6,7:12V, supply status
3. IIC check(R109,R111)
4. P103:pin1~4 VDD 12V, LVDS Data pin P104

LVDS Data pin

No problem

Lamp On status

Lamp On
status NG

Check inverter lamp

On/Of status.

Check Panel Error DET signal.

(P1000:pin17 or IC802:pin12)

Check LVDS Cable
1. Main B/D to FRC
2. FRC to T-CON

Replace the LVDS Cable.

NG

NG

Recheck PSU(+5V, +12V, +16V)
-> If not OK then replace PSU

Replace PSU

Check the PWM signal

(P1000, pin 22, 21)

Replace the Main B/D.

NG

Re App S/W download.

If not OK then replace IC100.

Replace the FRC B/D

No problem

Check LED A’ssy.

Replace PSU B/D or Main B/D.

Is the inverter OK?
(INV_CTL
signal:P1000:pin20)

Re MICOM S/W download
-> If not OK then replace
IC802

No problem

No

problem

NG

NG

NG