Kenwood km266 schematic needed, problem: shut down afther reaching max speed,afters stop : same thing happens i susspect main board or tacho, any suggestions ? greetings Eddy

You cannot bypass that board. Just order a new one: http://www.buyspares.co.uk/patissier/mx270/speed-control-pcb-assembly/product.pl?pid=963017&shop=kenwood&path=590806&model_ref=959620

Follow the power, start looking wherever the power stops. Sometimes it can help to reverse phase & neutral to track where the power stops from the other side too. You are only doing this for testing purposes and need to put it back as it should be when you're done.

Motor bearings

hi Ashley, I have the same problem as you. did you fix it? is there a triac in this device? how did you disassemble?

Hi. You have a broken gear in the gearbox either the first motion gear is loose on its shaft or less likely the vertical big gear is loose on its shaft. independent spares for the gearbox are available or complete gearbox

http://www.buyspares.co.uk/chef/km200/catalogue.pl?path=90253,71679&model_ref=440458

Howdy. Black smoke from an electric motor usually means damage. You say it worked after, that's sort of good. I suggest you use it until it dies and keep it unplugged when not in use. Plan to replace it fairly soon, though.
Good luck.
Farmerbear

sounds to me like you may have burnt up the motor probaby by mixing to heavy of a load or running it too long, or by just being older. I would replace it as fixing it would be costly

The problem is that the clutchdog, which is normally engaged by the peg on the liquidiser cover, is worn. Remove the top casing of the machine by removing the 3 screws and all of the outlet covers. Then unscrew the top of the gear box and prise open carefully with a screwdriver to expose the gears. The clutch dog can be unscrewed. Remove the spring that is on the outside of the gearbox and replace it on the inside of the gearbox so that it pulls the clutch dog down permanently. This then needs to be screwed back once the top of the gearbox has been screwed back together. Sounds complicated but it will be obvious when you try it. The machine will then turn the main attachment hub but will remain engaged as for later model machines. Hope this helps. John UK

sounds like the motor armature is burn. Dissemble the unit, remove the motor. Loosen the bolts running from end to end of the motor and with emery cloth, clean the small metal plates on the ehd of the armature. They should be bright copper colour. I the armature is burnt, they will be dull brown. The other thing is to replace the brushes in the motor.