LG 49LX560H - Media Support and Troubleshooting; Supported Media Formats

- 15 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
9. AV/RGB-PC Audio in Trouble shooting guide
Check input signal format.
Is it supported?
Check P3300, JK5001
Can you see the normal waveform?
Replace P3300, JK5001
Y
N
Check AC cable for damage
For damage or open conductor
Y
Y
Check the input of Mstar(IC101).
Measure waveform at C209, C211 because it’s more easy to check.
Can you see the normal waveform?
Y
Check Audio AMP output
L5503,L5504,L5505,L5506
Y
Replace L5503,L5504,L5505,L5506
N
This board has big problem because Main chip (Mstar) have some troubles.
After checking thoroughly all path once again, You should decide to replace Mstar or not.