Oh yes, it had power as well which is also super handy. If only it had wifi - the trifecta.

Looking at the United fleet site, there are 9 of 21 753s that have DTV and Power, the rest are dark/overhead TV like the 752s.

If the timings work for you, better to try for the 753s or 738 than have a 0.5% chance with the 752 (hope for an equipment swap)