LG 29LN45**-Z* User Manual

- 19 -

LGE Internal Use Only

Copyright ©

LG Electronics. Inc. All rights reserved.

Only for training and service purposes

6. No Video - HDMI

Check input signal format

Is it supported?

Y

Check JK501

for proper connection or damage

Replace connector

Y

N

Y

Check HDMI Cable for damage

or open connector

Check I2C Signal (JK501)

(#15, #16)

Re download EDID data

Y

N

Check HDCP Key (IC101)

Replace Scaler(IC101)

N

7. No Audio

Make sure you can’t hear any audio and

Device support the audio signal normally.

Check Speaker and

its wire connection (P700)

and the resistance

Check Signal from IC700

L700,L701, L706, L709

Y

Replace IC700

N

Check R879 Voltage Level (3.3V)

Y

Replace IC807(3.3V)

N

Y

Check Signal from IC101

SDA/SCL

(R703/R214, R707/R213)

Y

Replace IC101

N

Replace connector or Speaker

N