Do 5 pin soldering stations/irons have standardized pin outs and specs
Many manufacturers use 5 pin connectors, but they aren't built to any standard that I know of.

For your current problem, you might be able to replace the heating element if the iron has quit working.
This person received a recommendation to use a &quot;HAKKO A1321, Solder Iron Heating Element&quot; in the Zeny 853d - and that recommendation came from Zeny.