Vacuumdevil - "The circuit boards from Miele are not made in China most of the circuit boards are made in Ukraine or Germany depending on the machine."
Alex, I will GLADLY take a circuit board made in China for one of my vacuums all day long over anything made in Eastern Europe. If you REALLY think the circuit boards Miele and Sebo use are quality, HAH! Their boards are GARBAGE! Look at the issues Electrolux AB had with the circuit boards and motors in their canisters, and they were made in Hungary. Also, the issues Lux International has had with the circuit boards failing on the Intelligence, Excellence and Aerus Electrolux with the Aerus Guardian Platinum are prime examples here. Also, Beam, Mvac and a few other companies who use the Domel single stage central vac motor in their central vacs, that motor is a total piece of JUNK! You're lucky if you get 5 years out of one of those motors, even if it is cared for and maintained properly, and those motors are made in Slovenia. Need I say more? In contrast, Tacony has had better luck with the previous generation KingClean canisters they imported and the Riccar Prima/Simplicity Wonder and their overall quality. I have said it before and I will say it again - these complicated designs only goes to show that the Europeans, and particularly the Italians and Germans, are INFERIOR with their overcomplicated designs compared to Chinese, Korean and Japanese manufacturers who use far more simple components and design in their products.
I would agree with the suggestion made by Vaclab, MadMan and Crazykirbydude to try replacing the thyristor on the pcb board. Beko1987/Sam Watson here and on YouTube has done this before with Miele Vortex motors with success, so I see no reason why if done with care and a component with the right tolerances and specs are used that it wouldn't work. Ignore any suggestions made by Alex - remember, not only has he shown and proved his racist Aryan German bias many times towards German and Italian made products, legally HE MUST tell you to replace the entire board as he presently states in his Performance Reviews YouTube channel he works for a authorized Miele dealer, so he must represent legally on any forum online he participates in to do this as this is Miele company policy to replace the entire motor assembly when this happens on the Vortex motors. If he does not, then he is in violation of the contract that the dealer and workers legally entered into with Miele, and they can terminate the dealership to represent and sell Miele at that shop and take any legal action in court that they deem necessary.
And by the way, this is EXACTLY WHY I tell people NOT to touch ANY Miele vacuum made after 2003! Chances are, this Miele upright has been abused and used with generic bags or had one too many bag accidents where dust and dirt got into the motor. This is why Miele forces their dealers to promote the use of genuine OEM Original Miele bags and filters, because they claim that using generic bags allow too much dust and dirt to get into the motor and damage the motor. This is EXACTLY what they are talking about. The previous Miele made German double stage motor and Ametek 115923/117923 double stage motors that Miele used DO NOT have this issue, and the motor and circuit board will NOT be damaged by dust and dirt if a bag accident happenes.
The reality is, WHEN GENERIC BAGS ARE CORRECTLY USED, THEY WILL NOT DAMAGE THE MOTOR! The reason this happens with the generic bags is that people do not ensure that the bag door tube that goes into the bag collar penetrates the bag completely and is sealed to the bag completely with the silicone gasket. This issue particularly happens when consumers open the bag door to check the bag - they don't realize the bag moves slightly out of place in the bag holder (by design, Miele intentionally designed the bag holder and their bag collars this way to make it easier to remove a full bag from the bag chamber), they don't re-click the bag collar back in in the bag holder, and then the bag door tube doesn't penetrate the bag collar, dirt escapes around the bag collar and floods the bag chamber with dirt, dust and debris. When the bags are used correctly, whether genuine or generic, the bag will take the entire load of dust, dirt and debris being picked up off the floor surface. The ONLY disadvantage generic bags have over the genuine is because they use 5 layers of HEPA Cloth material instead of the Miele AirClean bags using 9 layers of "fluffy polypropylene" HEPA Cloth material, the generic bags will not allow the cleaner to maintain the suction and airflow until the bag is 3/4 full like the Miele AirClean bags will, and like a ordinary bag you will notice the suction and airflow start to drop off as the bag fills. However, this is easily solved by taking the bag out, taking it outside, giving the bag a good vigorous shake to loosen the dust from the walls of the bag hence restoring performance, and reinstall in the cleaner. Doing that, you will find suction and airflow restored to the cleaner, and you can continue to use the bag. How often you have to do this will depend on the ratio of fine dust and dirt vs carpet fibers/hair you are picking up with the cleaner, the less hair/carpet fibers you pick up the more you will have to do this because the hair/carpet fibers act as additional material for the fine sand and dirt to cling to instead of going to the walls of the bag.
Rob
