Question about Kenwood KM800 Major Classic Stand Mixer

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Kenwood chef A701A capacitor and other components.? I thought it would be a good idea to replace the capacitor on my Kenwood Chef A701A because of its age and before it blows!! Can you tell me if the 0.1microfarad capacitor on the A701A motor control board can be replaced by a maplin capacitor metallised paper 0.1mF N69CN (275V) or is it an electrolytic capacitor -I cannot see any polarity marked. If not any other known source?? I have used the above capacitor parrallelled with a 0.047mF one to successfully repair my daughters A901 mixer board 0.15mF capacitor which had burnt out. Also there are three components hidden beneath shrink plastic tubing on my A701A board, do you know what these are and if it is worth just replacing them. Two are white plastic shrunk in series with the Live and neutral supply wires and one is black and connected between the 0.1mF capacitor terminal and a terminal on the motor board. I think the A701A was made in the 1950/60s do you know? Thanks.

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The 0.1 microfarad can be safely replaced with a 275 VAC 0.1mF mains capacitor. You can remove the clip that held the old electrolytic capacitor by sliding the old capacitor out and squeeezing the metal clip so that it disengages with the plastic base. The load resistor is 450 Ohm 15W or 20W wirewound. There is a 56 ohm resistor in series with the capacitor which helps smooth the speed change and reduces wear on the contacts. A 2W wirewound resistor works best. (It is worth removing the contacts and removing any pitting or carbon build up with fime emery paper). I have repaired about 20 speed controls sucessfully with these components.

Posted on Dec 27, 2008

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Sorry I can't help with your A701a - but could you please advise exactly which maplin capacitor you used with your daughter's A901 - link would be useful - I only ask as my existing (blown) A901 capacitor is a 0.15mf (150nf) - thanks

Posted on Sep 15, 2008

  • tahc1 Sep 15, 2008

    Apologies - I should learn to read :- )



    You used two capacitors in parallel to make up the 150nf - the N69CN and I'm guessing the N68CN



    I got confused as the A901 also has another 0.47uf capacitor on the circuit board



    Thanks again

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You have hit the nail on the head, i have repaired my Kenwood Chef with these two AC type capacitors. The Electrolytic type which came out with the mixer are not available anymore. What i did was buy a 0.1 uf AC cap and a 0.01 uf AC cap, twisted one leg of each together, soldered wires to the three legs and used Heat Shrink to seal the joints up. The difference between an AC, or non Electrolytic Cap and an AC Electrolytic Cap are that the Electrolytic one is ever so more responsive. My mixer is now good for another 10,000 miles. The caps dont have to be spicifically Maplin caps, as long as they are the correct value and are 220volt rated.
Regards
Brian Le Roux

Posted on Apr 25, 2009

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The capacitor is rated at 1000V a modern cap will be OK .01uf and the resitor is 450ohm 15w there is a resitor across the resitor which is 56Ohm 2W there are 2 small ferite chokes on the mains input . Have a look on ebay full kit with all the components for 17.00 do a search for kenwood motor repair

Posted on Dec 17, 2008

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