If your unit is dead, don't throw it away. Replace the TRIAC, the optocoupler, and the two 1000uF electrolytic capacitors. You will likely bring it back to life for less than $5.
The WLX-896B (often branded under various generic names like "Saike" or "Yihua" clones) is a workhorse for hobbyists. But like many budget-friendly rework stations, it is prone to specific failures—usually related to the heating element, TRIACs, or the dreaded "E-E" error. Wlx-896b Schematic
If you are reading this, chances are you have a soldering iron in one hand and a non-functional WLX-896B hot air rework station in the other. You’ve come to the right place. If your unit is dead, don't throw it away