Yes'm or No'm?

Is it a Scientific Atlanta box?... you can give it a go, but its a flakey box via HDMI,
other boxes.. others will have to chime in.

Editing your location into your profile aids responding. Not all cable firms activate HDMI, but posts in your local forum (see international section) might help. Some HDMI users report little or no visual difference with YPbPr. -- John

Depends on how well the TV and box does HDMI vs Component. Try them both and compare.