Samsung UN55FH6200FXZA - Manual (Page 609)

If you find that the color on your
Samsung television’s screen is not
correct or black and white, first run a
Self Diagnosis on the TV to make sure
there are no device issues.
ΠSelf Diagnosis : Support
→
Self
Diagnosis
→
Picture Test
If the problem does not appear in the
Picture test, make sure:
ΠYour connections are all consistent.
For example, if you’ve used the AV In