HDTV Flickers Black for a few seconds ,when switching channels.
HD Box make / model: Xfinity / PR1508NM ( RNG150N )
HDMI connector fron box to HDMI connector to TV HDMI 1
I know there have been posts about this in the past ( for quite awhile , now ),
I contacted Comcast Tech Support, who says they haven't had a known issue like this before ?
Anyone know if the is a: FIX for this / Comcast problem / signal problem / HDMI cable problem ?
I have 2 HD boxes, ( same model) same problem
Apologies for the issue that you described above.
Pixelation and audio-video dropout issues are almost always related to local or individual signal or connection issues. The issue can occur on a single channel or multiple channels due to the frequency or frequency range that the channel is delivered on. Changes in temperatures can also aggravate the issue.
Check to be sure that all of your cable connections are snug.
Box swaps, box refreshes and multiple box refreshes may not resolve this issue if there is an underlying local signal issue.
Give us a call at 1-800-COMCAST and we can start the troubleshooting process and get this resolved. Insist on a technician visit so that the signal levels can be reviewed and adjusted if necessary. There is no charge if the issue is determined to be with our equipment or originating outside your home.
If connected via HDMI cable, this may be an HDMI handshake issue. One thing to check is to see if you have the latest firmware for your HDTV set. You can check that at your TV manufacturer's website.
You should download that firmware update to a USB drive then install it to your TV set as per the TV manufacturer's instructions.
Please let me know if that resolves the issue.
Thanks for your patience.
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