If you have just recently installed a LED LIGHT BOARD in your bedroom that is probably the cause. Some LED lights that have built-in regulator circuit will emit enough RFI to kill a digital TV signal.
If this is the case use a $4.99 LED Board from EBAY/CHINA to solve the problem.
Just a thought for you to investigate
Roy Ken
My Posts are IMHO based on my experiences - Words in CAPS does not mean I am shouting
Roy - Carolyn
RETIRED DOAF/DON/DOD/CONTR RADIO TECH (42yrs)
K9PHT (Since 1957) 146.52M
2010 F150, 5.4,3:73 Gears,SCab
2008 Starcraft 14RT EU2000i GEN
2005 Flagstaff 8528RESS