I only have a
Frankford Arsenal DS-750 and it has served me well for the last year or so. Not the best, but pretty good for the price, and also has a higher rating on MidwayUSA than the Hornady.
I'd say that you should push past the emotional attachment (which I also have with some much my equipment), and invest the cost of repair into a new one.
Note: My personal pet peeve with my DS-750 is the response time. I'll trickle some grains and then have to wait about a ten count before I'm sure it registers, or it'll jump +0.2 grains. Irritating when I'm trying to get it to the 0.1 gr (realizing there is a tolerance to the scale anyway). But again, for the price, I'd buy it again.