go into settings and make sure the HDMI inputs are set to enhanced and you are using HDMI 2 or 3 ONLY. Also, make sure to update firmware if you have not already done so.
HDMI signal format
Standard
Standard HDMI format for normal
use.
Enhanced
Set only for devices supporting
High-Quality HDMI formats such as
4K 60p 4:2:0 10bit, 4:4:4, 4:2:2.
Be sure to use a Premium High
Grade HDMI Cable that supports
speed of 18 Gbps bearing the HDMI
logo. (Refer to the specification of
the cable).
Note
• HDMI IN 2 and IN 3 only.
• Change to [Standard] if the picture and
sound do not o