Puzzling, I'd search to see if the TV model you have in your bedroom has an issue with inconsistent connections to HDMI devices, but I don't know what could be done about it.
Originally Posted by
Javy-Air in the living room TV I use the USB Power Supply on the TV, it works fine......in my bedroom TV I have tried using the TV USM port and I have also tried powering it up through the outlet, neither work.
Just to confirm that there is no issue with the power supply that came with the Chromecast, I suggest making sure it works with that power supply on your living room TV, even though you don't need it there since that TV's USB power works well. If the Chromecast's power supply also works on the living room TV, you can at least dismiss it as a possible cause of the problem on the bedroom TV.