This is the response I got, wantes to share since I was amazed by the time and effort he put into it.
I still havent decided what I will do with mine, but its good to know I could send it in anytime, thats customer support a lot of big companies wont offer!
The first part refers to me calling him Santa clause for 1 day delivery
"Hi! Thanks
But I think we should remember that being a DHL Express delivery there is most probably a lot of German engineering behind to make this shipping possible
)
Thank you for the positive feedback, it is pleasant and appreciated!
The loose part is the button, as it has some freedom of movement so when you don't hold it and shake the device, this can be heard as something being loose. About the heater noise, it is normal that it makes a sound. When the unit is turned on, you hear it shortly make this sound as it starts immediately to heat in order to minimize the waiting time. Then when it gets to the blinking phase when the red led is blinking (stand by), the heater is inactive and the sound is not present. And when you hold the button it activates the heater and sound starts again. You can also hear different sound signatures if you listen carefully. This can actually give you some information what is going on. For example if you have it in session mode, and let's say temp at 4. when you turn the dial suddenly to 10, you will shortly after hear the sound change a bit, as it is now using full 100% power to heat it up quickly. And when you hear the sound change, it is because it has reached the target temperature and starts again to adjust and regulate the power at a lower level to just keep it stable. Same happens when you use it and the flow of air trough the unit makes the heater power increase and there are a little bit different sounds, depending on the current level of power being delivered to the heater.
This is basically the sound of the power. It comes mostly from the heater, as it has a very large thin surface and the current from the battery is switched on and off many many times each second. When a high current is switched on and off, there will be some movement in conductors which the heater basically is, and this causes vibration that we sense as a sound coming from the unit. If you take out the stem and close the top end of the unit with your palm and take it off while the unit is active, you should hear a change in the sound level as it should mostly come from the heater unless there is something else loose to cause the sound level increase. The combination of a high surface area heater heater and the high current being used is the main reason for this sound being this clear. So if the TM was heater was made smaller, with less power, the sound would be less audible. But it should not be too loud to be honest, most people recognize it being there but for example if you are in a noisier environment the unit needs to be brought closer to ear to even hear the nuances of the different sounds it makes as explained above. It is quite impossible to analyze the sound level from a video as so many things affect the recording so I'm not able to say if the sound is within normal levels or something special has happened. But we do test each unit before shipping, and have never encountered a unit that had something special going on in terms of noise. One place that can increase the noise is a bad contact between the battery cap and the battery, some sandpaper wipes to clean the contact surface could in theory improve the contact if the noise comes from there. Other than that it is now difficult to imagine what could affect one unit to sound different. But of course everything is possible. The new revision vibration motors are also quite silent compared to the ones we used earlier on and they naturally have completely different sound signature when compared to the PWM noise of the heater, so it is pretty difficult to compare the sound of the heater to the sound of the vibration. So with the information I have, I cannot say if there is something wrong or not. But I have never heard of anyone complaining of the sound, just mentioning it is there as it is. But if you feel it is not working correctly and that it might be faulty, it is of course ok to return it and we can prepare a return shipping label to get it shipped and all you have to do is to print it out and call DHL customer service and ask for a pick up. Once it arrives it is possible to check it out if there is something different going on. As I said this is the first time I'm hearing this being an issue and while I said I have not seen units with a problem like this, with technology everything is possible. "