7
Troubleshooting
Problems
Causes
Solutions
Power light is off
and product is not
working
Is the power adapter properly
connected and the power
on/off button is on
Please check if the power
adapter is connected
properly and switch on the
power on/off button
The product
doesn’t show the
right image of the
Apple TV 4K or
other players
Maybe the customers setup
the wrong output signal
formats that the processor
can`t support, such as HDR10
(4K@60Hz 4:2:0) and Dolby
Vision (4K@60Hz 4:2:2), etc.
Please change the resolution
to the SDR resolution like
4K@60Hz RGB or 4:4:4
，
and
down compatible with the
lower SDR resolutions
No picture and
sounds after re-
plug the HDMI
cables or power
cable
Maybe the products can`t
recognize correctly signal of the
input and outputs after the
actions, or the connection of
the HDMI cables are not very
well
Please check the connection
of the HDMI cables and
power cable, and re-connect
the HDMI cables and have a
try, or change a high quality
HDMI cables
Power Adapter Information
Information published Value & precision Unit
Notes
Manufacturer’s name
or trade mark,
commercial registration
number and address
SHENZHEN Keyu
Power Supply
Technology Co., Ltd
-
-
Model identifier
KA2401A-
1202000EU
-
-
Input voltage
AC, 100-240V
V Specified by the manufacturer.
Shall be a value or a range.
Input AC frequency
50-60
Hz Specified by the manufacturer.
Shall be a value or a range.
