LG HT806TGW Service Manual page 16

DIGITAL DISPLAY & MEDIA TRAINING MASTER
1-4. Shaky Picture
Distorted picture refers to the customer getting video, but there is a problem with the video.
What cables is the customer
using to connect the DVD?
YES
Is the TV set to
the correct input?
YES
Does shaking appear when
watching multiple discs?
YES
Does shaking appear when
watching a TV program?
YES
Does shaking appear
when the DVD is connected to
another TV?
YES
Has the customer tried
another set of cables?
Determine what cables the customer is using to connect the DVD to
the TV and if connected properly. Refer to OM for connections.
NO
Make sure the customer is not connecting a DVD.
Copy protection can distort the picture on older VCR models.
Make sure the TV is on the correct input. Turn TV off, then on
NO
to determine input. Video when using composite, or component.
DVI when using DVI, and HDMI when using HDMI.
One disc displaying the issue is a problem with the disc.
NO
Multiple discs displaying the problem could indicate the DVD lens
needs to be cleaned. Recommend the customer use a lens cleaner
on the DVD. A lens cleaner is available at any local electronics retailer.
Shaking appearing when watching a TV program indicates an issue with
NO
the display. If the TV program is fine, then connect the DVD to another
input on the display to determine if the problem is following the DVD.
Connect the DVD to another TV and play a disc. No shaking during
disc play back indicates a problem with the first TV. Please refer to
NO
the owners manual for instructions on how to connect the DVD to a TV.
If the DVD has a problem on the second TV,
then see service chart for service information.
Have the customer try another set of cables. A bad cable can
NO
also cause video problems. Test the cable with another device to
the TV to also determine if the TV is bad. If DVD is problem,
please see service chart for service information.
2-5
Tighten any loose cables.