This Instructable involves you playing with mains electricity, lead and minute amounts of mercury, which you shouldn't be exposed to unless you break the fluorescent tube. If you dislike either risk, I recommend you go and do something less scary, because I take no responsibility for any injuries, deaths, or people becoming stoopid.
This is probably also a fire hazard, because mains electricity is real good at messing up your whole day if you do something wrong
Step 1: Gather Parts/tools
* 2 CFL's. One with a blown tube, and another with a blown electronic ballast (preferrably of the same type) or even just a good tube without the electronic ballast
For this Instructable, you will need a minimal amount of tools:
* A flat-headed screwdriver
* A pair of pliers (needle nose pliers are preferred)
Step 2: Dismantle the CFL With the Blown Tube
Use your pliers to unwind the connections to the bulb (Or use your soldering iron to remove them, depends on what type of bulb you have.)
Seperate the bulb/tube from the PCB and the base, set the blown tube aside.
Step 3: Replace and Reconnect the Working Tube
Step 4: Assemble Base and Test
Be wary that you may have messed something up, so don't do this in the middle of a gas station, or your whole day will probably get messed up. Insert the lamp into a suitable socket with the came voltage/rating of the lamp. If you see smoke, turn it off. If something goes bang, turn it off. If nothing happens, turn it off. If you get light emitted from the tube, congratulations.
Chances are, you will probably 1) See nothing, hear nothing, or 2) See light.
Either way, you will have voided the lamp's warranty. :-P
Have fun, and be safe,
BTW, The ballast in my lamp seemed to have passed away aswell, so there are no pics of light, sorry.