Electronic card component replacement

Maybe, you'd have to do some component testing and signal tracing to know for sure. I would strongly urge you to bring it into a professional, to prevent additional damage. If not, you can find replacement parts at these vendors:

Mouser Electronics Electronic Components Distributor

Digi Key Electronics Electronic Components Distributor Since 1972

F01 - Main modul, triac on board damaged or components feedback fault

• Short circuit motor triac on electronic module
• Check wiring
• Check electronic controller

Dado

The "vacuum won't shut off" problem is caused by a faulty triac (electronic component) on the P.C.B. assembly. You have two choices, depending on your handiness:

1. Easiest: Replace the PCB: P.N.=KC86WBZRZ000
2. More difficult: Replace the triac: P.N.=BTA16-600CW (ST Microelectronics): http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/DATASHEET/CD00002265.pdf

The PCB costs about $25.00 from Sears, whereas the triac costs about $1.50. Sears will not sell the triac - you'll have to find an electronics parts supplier.

Apparently the switch is very easily available, unknown for what reason. In Europe they say it is not available at all anymore, which I find strange.
However!
Dissasemble, by removeing base plate and screw underneath curved retainer plstic clip in the front. Then gently pry apart with blunt, thin object to split the two halves. Remember to unplug the power cord first. Check the circuit board for cracks, or burnt components. Then suspect the triac/tyristor. Desolder it and test it with a multimeter. (google "test triac multimeter"). Then note the code on the front of the triac, and search for a supplier of electronic parts to get hold of a new one and solder it back on. Note the orientation of the pins, and reattach heatsink if fitted. (Euro version have non.)The triac often looks like a flat design transistor and have a code/part nr that may look like; TCI 226 N, as on my European 230v version. Electronic components suppliers also have interchangeability lists for different manufacturers and use cross reference lists. Should only costs a few dollars or so. Triacs tend to stay fully open when failed, causing full speed in any mode. It is worth a shot.

Hi, maybe your circuit its not burning, in theses models its normally the capacitor or triac, resistor as well,
with just change thats components the machine working again

regards
Kenwood Chef Restore

cheak door hindge mechnizem

Inspect foil side of HV board for burned tracks toward lower side of board. If burned, check HV capacitors (High Voltage Capacitor Test Procedure) and HV transformers (High Voltage Transformer Test) for a short. Otherwise test other components as outlined above.
Solution: Replace defective components as necessary. If applicable, repair foil trace on HV board.
Hope that helps.........

All of this model heater use a triac to turn on the motor. The buzzing you hear is because the triac is only turned on half the time due to a component defect on the control.

Replace the control.

or

If you are good with a soldering iron, replace the component labeled "OC2" on the circuit board. This is the optical isolator that caused the triac to "half-wave". Component is a MOC3023

Need a model number to be sure, but alot of the Sears cannisters have a relay and it is found mounted in the motor comparment, it may be sticking in the on position.