Curtis KCR2614A - Manual (Page 18)

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6. Before Repair
The following phenomenons do not mean that the TV set has fault.
Please check it according to the following methods before repair.
Phenomenon Reason
No image and sound The power switch is on the state of off.
No signal
Whether chosen the right channel; auto
setup receiving channel again.
No sound
Whether the volume has been turned
down at the bottom; signals too weak;
the mute function is working.
Mosaic in the image
Whether the antenna has been adjusted
properly, and maybe the signals are too
weak. Whether the Antenna connect well.
Image too dark
Whether the brightness and contrast are
proper, and please adjust again.
Radio(FM/WB) noise
or no sound
Whether the FM ANTENNA CABLE has
been adjusted properly, and maybe the
Radio(FM/WB) signal weak.
Radio(AM) noise or
no sound
Maybe the Radio(AM) signal weak.
NOAA no function
Whether the FM ANTENNA CABLE has
been adjusted properly, and maybe the
WB signal weak.