LG BH5140S, Service Manual

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DIGITAL DISPLAY & MEDIA TRAINING MASTER
4. NOISE/AUDIO PROBLEMS
4-1. No Audio
The customer is not able to get audio.
What cables is the customer
using to connect the BD?
NO
YES
Determine what cables the customer is using to connect the BD to the TV
and if connected properly. Refer to OM for connections. Tighten any loose
cables. Make sure the customer has audio cables connected if using an
HDMI to DVI adapter or video-only cables (DVI, component, etc).
Is the customer able to see
video?
NO
YES
Make sure the customer has not routed video and audio to separate
inputs.
Does issue occur on more than
one disc?
NO
YES
Problem occurring on one disc indicates a problem with the disc.
Problem occurring on multiple discs could indicate a lens cleaner is
needed. The customer can purchase a lens cleaner at any electronics
retailer.
Problem occur when watching TV
program?
NO
YES
No audio from a TV program on a different channel or input means there
is a problem with the television. If a TV program does have the audio,
the problem may be BD-HTS, the cables being used, or the TV itself.
Does the problem occur when
BD is connected to another TV?
NO
YES
Audio is fine when the BD is connected to another TV indicates the
problem is with the television. Refer to the owners manual for assistance
with connecting BD to another TV.
Has the customer tried another
set of cables?
NO
Have the customer try another set of cables. A bad cable can also cause
audio problems. Test the cable with another device to the TV to also
determine if the TV is bad. If BD is problem, please see service chart for
service information.