Had an unfortunate accident while working on another machine where i had a short circuit on 110v and in turn popped a bunch of capacitors and a resistor (at least)in the dotmatrix display its self. The resistor is burned right up and cannot id it at all. There is a label of R19 with ZD5 under it. Anyone know the value of that resistor? Also what else do I need to check on the power supply so I can order everything at once (and not blow anything else up)? I've searched for info on this but no luck so far. It's a international power sources model pu110 12a.