Are you fukin kidding me , 300% harmonic distortion wtf .!
The THD numbers alone say the ballast isnt a well thought out design & suggest non optimal operation .
Any neighbors in the area using antenna tv would be fuked ,a loose connection of a cable wire would draw the cable company running to the home , not something a guy on the down low needs .
Ive been buying HTG over 10 yrs so i had no idea those ballasts were that shitty .
Op , take the replacement ballast & sell it off as a refund isnt likely from what im reading here , no reason to hate on digitals though , i too was a die hard magnetic ballast user for 20 yrs , i replaced my magnetics 10 at a whack & am glad i did cause it cut my cooling costs in half & give me more light per watt consumed .