Respuesta a "Dyson fan developed a low whining sound from the lower section (motor"I 100% solved the hissing/rattling noise. https://www.ifixit.com/Guide/intro/97878
Respuesta a "The unit shuts down after 15 sec. And I unable to buy the Thermal Fuse"Here are the images of how to take it apart and where to find the white thermal fuse to replace. Be careful in soldering because it is triggered by temperature (THERMAL fuse) so don’t rest the solder gun on the fuse for long. Ideally line them up with a vise or clip, then do a quick solder melt on top. Buy the fuse (102Celcius, 250 Volt, 10 Ampere) on ebay for like $3. 2 screws out. Carefully pull up the battery cover 1/2” off from the screw-side first, no more because you can snap off the other side. Now push it laterally (toward the leads you could snap off) and it will separate. Underneath is the battery pack and thermal switch. I bought an assortment of 40 thermal switches for $12, because it was a better price per switch and you can use the others for hair dryers, vacuums, and coffee machines. Update (04/10/2021): Replacing the thermal switch did not work. I am including pics in case someone wants to replace it. ALso see the chrome-colored tool to extract the power leads in the backround of the last...