It says that channel 254 slice HD is on preview, but I have no picture just the sound
Hi there jop
More than likely, the cable box that you've got isn't able to process the newer MPEG-4 format broadcasters are using more often for their channels. Slice HD is an MPEG-4 channel. You can find out which channels are MPEG-4 and which cable boxes can process MPEG-4 channels here.
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