Diagnosing a Cartridge That Will Not Draw
A cartridge producing no vapour has one of about six causes, and they can be eliminated in a fixed order. Working through it takes a couple of minutes and resolves most cases.
One: is the battery actually firing?
Check the indicator. A pen that will not light has a charge or button-lock problem, and most draw-activated pens lock after a set number of rapid clicks.
Charge it fully before...
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