Solution: Breville BOV800XL Smart Oven Convection Toaster (Flaky Start/Cancel Button)

This article will explain the solution if you have a Breville BOV800XL Smart Oven convection toaster oven that is now acting as possessed by a demon (flashing on and off).  

The particular toaster was purchased in May 2021 (it only comes with a one-year warranty) and is used almost daily.  

It will still work if you unplug it a few times and jingle with the start/cancel button, but that gets pretty old fast. 

After doing some research, it seems there are a few options:

  • Buy a new start/cancel switch and solder into the board (cheap.. maybe $5, but involved soldering)
  • Buy a whole control panel unit (more expensive, $34 plus shipping, but fast and simple to fix)

I purchased the entire control board since it wasn’t expensive and would save some time and frustration. Plus, the last time I soldered was in my high-school electronics class.

It seemed like a $40 part and an hour’s worth of labor would be worth it instead of spending another $250 on a new oven. 

Here’s a video of how the unit was acting:

This is the control board. I purchased it online here. It’s part #170 on their diagram. 

Part Number: SP0024079  Direct link to part

Note: At the time of writing, they are now back-ordered. I must have received the last one they had. Also, it is interesting to see that this must have been a common failure, and the manufacturer may have updated the part to solve the problem as their website notes, “*This part replaces obsolete part #: BOV800XL/170A and BOV800XL170A.” 

I’m hoping those old part numbers were control boards with known faulty parts, and this new board will not have the same issue.

If you want to see a quick video of what the removal process looks like before you decide, here is one that shows what your in for:

Note: This is the solder route, and the control board is easier, but it gives you an idea of what is involved in taking the unit apart.

What you’ll need for this repair:

  • Long #2 Phillips screwdriver (there are screws inside the front of the unit, and it will be impossible to get to without it)
  • #1 Phillips screwdriver to get a couple of the control board housing screws out.
  • New control board
  • It is not a bad idea to wear gloves, as the panels are sharp
  • Padding to protect countertop if not moving to a workbench

You could use a drill to speed things up, but it’s probably not necessary and more risk a stripping the screws. I started with one, then ended up using my screwdriver instead.

Quick Summary of Steps to Fix

Here is a brief overview of how the process went to fix this toaster over.

1. Remove rear cover

Small silver screws.

breville toaster over rear

2. Remove bottom feet/panel

Breville bottom panel

3. Remove black interior screws

This is one of the trickiest parts of the repair. You’ll need the long #2 phillips screwdriver to get to the screws that hold the control panel together.

I used a 10″ Klein screwdriver and could get to it, but longer than 10″ would have been better. Also a magnetic tip helps in this step as well, as the small screws are bound to fall out of the hole during removal or installation.

4. Swap boards

Now you should be able to get to the control board. Remove the two connections (following the same routing pattern) and replace them.

You’ll also need to pull off the knobs on the old bottoms and place them on the new board and the spring for the flaky start/cancel button.

Breville 800XL toaster over control boards to fix flaky start button

5. Get rid of spare screws

Not sure where all these extra screws came from, but you can get rid of those. KIDDING! That was a joke; you should not have any spare screws. If you do, you missed installing them somewhere. But, there are a good amount of these you will be removing and installing.

control board screws

6. Testing

You should have everything back together at this point. Once complete, plug the unit in and try to turn the start button on. It should work like new.

Time will tell if this repair will hold up over time. If it does not, the start/cancel button will be replaced with a new one on the old board. If that still doesn’t work, well, it will be time for a new toaster oven!

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Davin is a jack-of-all-trades but has professional training and experience in various home and garden subjects. He leans on other experts when needed and edits and fact-checks all articles.