Couple of days back my toaster oven tripped one of our circuit breakers and since then it fails to power up. I have taken it to different outlets, but no luck. I have not yet opened it up. Any suggestions?
I was able to replace parts on the circuit board (P/N: 128301_timer_pcb) to fix this issue on my KCO253CU Kitchenaid Toaster Oven. R1 was visibly burned. On further troubleshooting, ZD2 was found to be shorted.
Known Failed Parts Replaced:
R1: 47 Ohm 2 Watt resistor
ZD2: 47V Zener Diode
Other Parts Replaced
C1: 1.5 uF 400 Volt Film Capacitor
ZD1: 5.1 V Zener Diode, tested OK but replaced anyway.
See attached photo of circuit board for component part numbers.
John W.
Hi I think you will need t take it to a repair shop as it seems the toaster had had an element short circuit there is a small safety diode in the mains circuit to save you from shocks, I would check if a new one might be cheaper than the repair eric
SOURCE: THERMAL FUSE BLOWN ON KITCHEN AID KCO100508
Thermal fuse is a one time safety device, order by specification. My Kitchen Aid toaster oven has one on the side with the controls marked 206c for 206 degrees Celcius when it blows, and marked with a part number that when Googled was found to be 2 amp. The fuse blows in this sequence: temperature first, then if that fails the regular fuse action will kill the circuit at 2 amps. I called electronic supply places around Los Angeles. $1. 25 later I have my part. Mouser electronics carries them for .44 cents. Placed the new one on the ceramic base of the old one, and am back to using my favorite toaster oven. Will not be using it for broiling again - that is when it got hot and quit on me.
SOURCE: KitchenAid toaster oven Mod# KC010058
The overload switch is located above the theromostat.To check it put a jumper across the switch and plug the unit in. If the switch is bad you will now see the red light on and the oven will work. Take the switch off and gently pry the 4 posts back. Remove the pin, gently put it in a vise and put a drop of solder on top of the metal cap. Put the switch back togther, install it and you should be back in operation.
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