Samsung PL64E8000GFXZP - Manual (Page 567)

Picture (Troubleshooting)
First, perform the Picture Test and to
see if your TV is properly displaying
the test image (go to Support
→
Self
Diagnosis
→
Picture Test ).
If the test image is properly displayed,
the poor picture may be caused by the
source or signal.
The TV image does not look as good as it
did in the store.
Store displays are all tuned to digital,