If there are 2 HDMI outputs on the receiver, you must connect the TV to the HDMI output on the VSX53 that says "main out" or "audio/video out" or "HDMI 1 Out" or something like that. The second HDMI output will be labeled "audio" or "audio only" or something like that.
Assuming the TV's HDMI jacks are ok, and the connection to the receiver's HDMI out jack is ok,
you can try resetting the receiver (page 55 in your owner's manual). If that doesn't work, then
your receiver's Digital/HDMI pcb may be bad. Good luck!