frequent TV box losing power for a very short period - XFinity

#1
For frequent TV box losing power for a very short period, XFinity-Comcast TV equipment I am experiencing frequent outages to the cable box. They do not last long, a few seconds at worst. It is long enough to loss the guide which takes days to get back completely. Why is this happening and what can be done about it. The outage is not the issue as the length of time is not long enough to be an issue. The loss of the guide isthe issue. This is NOT caused by a power outage. Occasionally I am in front of the TV when it happens and there is no flickering of lights or other appliances. My computer and digital clocks do not notice any power fluctuations. Please let me know something.
Thank you.
 
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