As you might have noticed most electronics these days are surface mount components and can be difficult to work with if you don't have a preheater and a hot air rework station. This can make troubleshooting a pain. Fortunately there is a solution. I will give you a quick introduction to low melt solder.
Step 1: What you will need
2 Low Melt Solder
3 No clean paste flux
4 Tweezers or a vacuum pickup tool
Step 2: Flux it up!
Lets go then.
1st we add no clean paste flux or the flux of your choice to all the pins on your IC or to your discreet SMT component.
Step 3: Add Low Melt Solder
Put your soldering iron tip (set to around 700'F) onto a pin and add some low melt.
You don't need much, a little goes a long way. Now drag a bead of low melt down the whole side of the chip making sure each pin is covered. Touch up as needed. Repeat on the other side of the chip.
Step 4: Here comes the magic
If you don't have a vacuum pick no need to worry. I will post a vacuum pick instructable soon.
Step 5: Clean your pads
You must completely remove the low melt solder from your pads before replacing your IC or discreet component. Solder Wick works perfect for this. If you don't it can be a pain in the neck getting your component to stay in place while you solder. Also, if your component is next to a chip that runs hot you run the risk of the solder melting and your chip sliding and causing havoc.