WanneBe: Re: using solder bridges to "jumper" across pads
Yes, your technique will usually work, but it's somewhat risky in that (especially if you've scraped off the conductive epoxy you used on the first try) you might be shorting out on traces between the pads. If that happens, you could get anything from "it doesn't boot" to "it blows up real good".
To jumper the pads, I did the following:
1) "Tin the leads" of a short (~1-2mm) piece of solid-core wire or 30-gauge wire-wrap wire. This means "glop solder onto it".
2) Tin the pads. (Same deal, just touch the iron and the solder to the pad on the motherboard.)
3) Clean the pads. With a bit of solder wick, I removed the excess solder from #2, leaving me with a nice clean silvery layer on the pad.
4) Place the wire. I held it in place with the tip of a small jeweller's screwdriver.
5) Tack it down. Place the soldering iron against the wire and the pad simultaneously. The solder on both parts (from "tinning" the lead and the pad) will flow together.
6) Solder the other end. Same way, but you can old down a little longer, 'cuz the solder joint you made in step 5 will help hold things in place.
7) Resolder the first end. With a really nice joint from step 6 holding the wire in place, you can now go back and do a proper job on the first end you did in step 5.
Sounds complicated, but it's not. 10-20 seconds to tin the leads/pads, and 2-3 seconds for steps 5, 6, and 7.
(As always, practice on a junk board first