My 30D, like many others, has a faulty shutter button (likely from corrosion, dirt, oils, etc seeping into the shutter button assembly). Because Canon demands several hundred dollars for the fix, and I'm not confident stripping the body down, I've stumbled upon another route that just may work.
Apparently, some users have reported success by pouring a spoonful of pure isopropyl alcohol into the battery compartment and letting it run through to the shutter button, pressing and twisting the button while the alcohol runs through.
The pure alcohol should not damage circuitry because it does not conduct electricity. I am slightly concerned that it will only solve the corrosion without actually removing it, perhaps worsening the problem.
It sounds a bit mad, and I don't doubt that more effective (but riskier or expensive) options exist. However, I'm selling the camera to a friend who's about to leave the country and cannot wait for an authorized repair. Plus, money is tight.
Has anyone done this before?