Request for Repair Assistance - Sequre SI012 V1.8 Damaged by Accidental Reverse Polarity
Author: bytedance261Created Jul 9, 2026Updated Jul 11, 2026
I have a Sequre SI012 V1.8 soldering iron that was accidentally damaged. I reversed the polarity on the DC barrel jack input by mistake. After that, the device now shows a short circuit when I connect it via Type-C.
From inspecting the PCB: The TVS diode marked "CG" appears burnt.
The iron was working perfectly before this incident. I would greatly appreciate your help with: Recommended replacement parts Any repair guidance ThankYou!
Source: Ralim/IronOS