If your ULTIMAX IRSDUT-ZD90SP II soldering iron has stopped heating properly or takes forever to warm up, there’s a good chance the heating element is worn out. Replacing it is a straightforward process that can bring your soldering station back to life — and save you money compared to buying a new one.
In this guide, we’ll walk through unboxing the replacement heating element, disassembling the soldering iron, replacing the old part, and testing the repair.
Step-by-Step Guide
1. Unbox the Replacement Heating Element
Check that it matches the specifications of the original one to ensure compatibility.
Start by opening the package containing your new heating element.
2. Disassemble the Tip Assembly
Remove the nut, tip enclosure, and soldering tip from the front of the soldering iron.
Keep these parts in a safe place for reassembly later.
3. Remove the Cover
Unscrew the screws securing the soldering iron’s cover.
Once the screws are out, use a small pry tool to gently open the casing without damaging the housing.
4. Remove the Old Heating Element
Carefully pull out the heating element from the tip section.
Cut any wires connected to it, but make note of their positions — this is important for reconnecting the new element correctly.
5. Replace with the New Heating Element
Position the new heating element in place of the old one.
Connect the black wire and blue wire together to the longer wire of the heating element.
The short wire from the heating element should connect to the switch.
Use heat shrink tubing to insulate all soldered joints for safety.
6. Apply Heat Shrink Tubing
Use a heat gun to shrink the tubing over the solder joints until it fits snugly.
7. Reassemble the Soldering Iron
Place the heating element back into the nipple section.
Reinstall the switch and all internal components in reverse order of disassembly.
Fit the cover back and tighten the screws.
Reattach the soldering tip, tip enclosure, and nut.
8. Test the Soldering Iron
Turn on the soldering iron and let it heat up.
Clean the tip using a damp sponge or brass wool.
Apply solder wire to ensure it melts smoothly.
Conclusion
And that’s it! Your ULTIMAX IRSDUT-ZD90SP II soldering iron should now be working perfectly again. This simple repair not only saves you money but also keeps your tools in service for years to come.
If you're using the Saike 952D rework station, sooner or later, you might need to replace the soldering iron handle due to wear, damage, or inconsistent heating. In this post, we’ll walk you through the unboxing, installation, and testing of a new replacement handle — step by step!
Replace the soldering iron handle.
📦 What’s in the Parcel?
We ordered a compatible replacement soldering handle for the Saike 952D, and here’s what came in the parcel:
Components required for replacement.
✅ 1x Soldering Iron Handle
✅ 2x Spare Heating Elements
✅ 🔧 Pre-installed Heating Element in the Handle
That’s right — the new handle already comes with one heating element installed, so it’s ready to use immediately. The additional two spare heating elements are a great bonus for future replacements.
🛠️ How to Replace the Soldering Handle
Replacing the handle is quick and easy. Just follow these simple steps:
1. Power Off & Disconnect
Make sure the Saike 952D is turned off and unplugged for safety. Let the existing handle cool down if recently used.
2. Unplug the Old Handle
Unplug the old handle soldering iron.
Locate the connector of the soldering iron handle at the front of the station. Gently unplug it by unscrewing or pulling it out, depending on the model.
3. Plug In the New Handle
Plug the new handle soldering iron.
Take your new handle and plug it into the same port. Make sure the connection is secure.
🔥 Powering On & Setting the Temperature
Once everything is connected:
Setting the temperature.
Turn the Saike 952D back on.
Switch to the soldering iron mode.
Set your desired temperature — we recommend starting at 350°C for general testing.
The station should recognize the new handle and begin heating immediately.
🧪 Testing the New Handle
Test with the solder wire.
Grab some soldering wire and try it out on a small PCB or scrap components. The heating should be consistent, and the solder should melt smoothly. If everything works well, your replacement is a success!
✅ That’s It — You're Done!
With just a few simple steps, you’ve successfully replaced your Saike 952D soldering iron handle. Whether you're a hobbyist or pro technician, this quick upgrade keeps your station running like new.
