Kitchenaid Toaster Oven KCO253CU No Power-On Light, No Heat

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.

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.

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.

We've got the same problem and I just took ours apart.

Bad news: I'm pretty sure it's the circuit board. It's not the timer knob, and I'm almost positive it's not the upper selector knob. Most of the components on the circuit board are only used for the "bake" mode to regulate temperature. The board is marked, "128301 Timer PCB". I looked into whether one can buy a replacement board from Kitchenaid, but it's not on their parts list. If I had to guess, I'd say it's the relay on the board, but it's only a guess. Shoddy components, plus it gets hot in there and "bakes" the board. The little fan in the side isn't part of the "convection." It's for cooling off the circuit board. Don't laugh.

Even worse, next to the thermostat on ours, there's a little rubber insulator that's burnt to a crisp. The connection under this insulator was also loose. It hasn't affected functionality, but it doesn't instill confidence in the design. Kind of scary. Unplug this unit when not in use!

Only a one year warranty. I think we now have an expensive toaster.

Hello :

You need to check the fuse . If the fuse is OK , then the proplem will be with the power PCB [ printed circuit board ] . You need to call for repairing if the problem is with the PCB .

regards .

please rate !