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Model No. DC50X

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Message 1 of 3
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This unit Part No. B3748416000 is not working. I have tried it on two tvs. It worked when first installed but no longer. What can I do?
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Message 2 of 3
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Call 1-800-COMCAST or take the box to the Comcast office for a replacement.




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Message 3 of 3
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I just had two of these boxes stop connecting to the cable. One slightly after the other. I checked all the input cabling and have tried connecting the box where the working internet modem and the working TV tap out their signal. So far no luck. I thought at first it was low or lost signal, but it is appearing to be a problem with the comcast interface. Any ideas? I noticed there is a new digital box replacing this one. Has the protocol changed?