sonicare surgery fail

a few months back my sonicare stopped working. i was traveling at the time and when i took it out of its traveling coffin and pressed that power button, nothing. i was horrified (and that's an understatement). i had looked up some possible known issues and found a battery replacement DIY. it seemed to be logical that the battery reached the end of its lifespan so i ordered a new battery online and was pumped to try to replace it. the $3 battery, using a soldering iron and getting my sonicare back up and running were all excellent reasons to give this a go.

after removing the casing to expose the guts of this thing (btw, i really need to better maintain my sonicare because dried up toothpaste crust is not that fun), we removed the battery and then soldered the new one on there with fresh new wire. we took a volt meter to test its connection before putting the casing back on and it seemed solid. voila, it was done! but, when we put the sonicare onto its charger, i didn't see any lights. my sonicare officially died on the surgery table that night. time of death, 21:34. today i ordered a new one.