The most probable cause for malfunctioning of the LED screen on your curling wand is a faulty display unit. This is a fixable issue, that requires a simple check of the wiring of the LED unit. All necessary instructions for this process are located at our troubleshooting guide.

The likely explanation for your curling wand not properly changing temperature would be the unit having faulty temperature control buttons. Plug in your wand and attempt to change the temperature up or down, and note which controls are unresponsive. It is possible that the wiring for these elements may have degraded and need repair; this issue can be solved in our troubleshooting guide.

There are two probable issues that may cause your curling wand to not power on properly. There is a possibility that the power button on your curling wand is faulty, which is addressed in our troubleshooting guide. The issue could also be caused by a faulty power cord, which has a detailed solution seen here.