There seem to be a gazillion methods to resurrect and clean attys. I am not saying that this is necessarily a bad method, but
..............no amount of cleaning, rinsing, blowing, or arcane religious ritual which includes hanging upside down from a lamppost facing Uranus will resurrect an atty that has blown a coil.
So save yourself a lot of useless effort and first test the atty for an open circuit. You can pick up a multimeter from ebay shipped for the price of an atty. Or
buy a ProVari which will test the atty as well. If you search on this site, there is a video that explains how to use a multimeter.
It is REALLY SIMPLE to use one.
I have cracked open a few attys and learned to rebuild them as a survival skill should our dimwit legislators decide to enforce a ban. After examining my failed ones, my impression is that they primarily fail because
juice starts to cake up in the wick which creates a type of "hot spot" with a differential thermal and electrical conductivity and will create a stress point that will heat up at a different rate than the rest of the coil creating stress.
While hot water will work, I really think that you need to get all the gunk out of the atty using another method. Alcohols, solvents (acetone, MIBK), and even vinegar might work to some extent, but chemically, one needs to get rid of the caked up deposits using a peroxide or strong cleaner such as denture cleaners. These will oxidize all of the carbon bonds that form inside the atty.
Most juices will caramelize because they are organic in nature (means that they contain carbon); they will also most likely contain a sweetener such as sucrose, this is also a form of sugar. You don't really need to understand the chemistry, but if you want to see the effect take some sugar dissolve it in water, and then throw a couple of teaspoons into the the bottom of pot and boil it off. The gunk that is left over is great for creme brulle, but not so easy to remove from your pot. The same will happen with your
juice. The same thing happens inside your atty.
In any event a cheepo multimeter will save you a lot of wasted effort trying to save a dead atty.