GHD Gold S7N261 & S7N421 Max
This generation of GHDs were launched in 2018 (S7N261) & 2021 (S7N421)
After repairing over a 1000 GHD Gold & Max irons we have identified the reason why so many of these irons fail with a cracked element or thermal fuse failure.
This model requires a minor circuit board component modification to be made for future reliabilty. Every GHD Gold or Max requires this modification to be made!
The modification is applied by us to every iron received as part of our repair service.
Some customers have contacted us recently saying they have read on the internet, that GHD Gold & Max irons with certain date codes on the label can't be repaired. We can repair every GHD Gold & Max regardless of dates codes.
Correct operation is as follows:
- Plug in to the mains socket. - Beep tone and the on/off button flashes briefly.
- Press the on/off button for 2 seconds to power them on. Beep tone and the on/off button starts to pulse on and off.
- Ready for use - Beep tones. The on/off button is illuminated continuously.
- Press and hold the on/off button for a few seconds to turn the irons off.
- This model has a sleep mode that is activated after 30 minutes if the irons are not used.
We recommend that the Gold and Max irons are switched off or unplugged at the mains socket when not in use! This is because they can be damaged by normal mains voltage spikes, even when "switched off". If they are unplugged, then they can't be damaged!
Faults found on the GHD Gold S7N261 & S7N421 Max
These models incorporate comprehensive protection circuitry. Most faults will trigger the error detailed below.
"Squeal" error sound after plugging in
About 10 seconds after plugging the irons in to the mains socket the on/off switch flashes red and a sound like a squeal will be heard. This will repeat every 15 seconds or so.
Faults found to cause this error are;
- Thermal fuse failure.
- Element failure.
- Thermistor Failure.
- Broken wires that lead to the thermistors.
- Broken wires that lead to the elements.
- Loose wire/wires in any of the push fit terminals.
- Burnt thermal fuse pads.
"Squeal" error sound during use
The irons turn on and heat up normally. Shortly after reaching the correct temperature, possibly whilst you are actually using the irons, the on/off switch flashes red and you hear a squeal like sound. This will repeat every 15 seconds or so.
Faults found to cause this error are;
- Broken wires that lead to the elements.
- Broken wires that lead to the thermistor.
- Loose wire/wires in any of the push fit terminals.
- Burnt thermal fuse pads.
Switch off during use
The irons turn on and heat up normally. During use they switch off. Pressing the on/off button may bring them back on again. This repeats as the irons are moved around.
Mains cable is damaged causing intermittant loss of the mains supply to the irons. See the video below for details of how to replace the cable.
Dead. No sounds or on/off button illumination.
PCB fault. Faulty STM32 Microprocessor.
Supply to ground short circuit.
Please note that software at the factory is used to adjust values stored in the STM32 memory to cater for variations in the values of each element and thermistor.
Fitting a replacement element or PCB will introduce a mismatch and cause the irons to operate at a lower or higher temperature than expected.
A range of elements is required so the correct value can be found enabling the correct temperature to be achieved.
GHD Gold S7N261 Photos
GHD S7N421 Max Images
Cable Replacement
The video below explains how to replace the mains cable on the GHD Gold S7N261 irons. The process is virtually the same on the GHD S7N421 Max. A replacement cable is available from our shop - GHD Gold Cable.
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