01 November 2019

Fixing a Stuck Door on the Breville BOV900 Smart Oven

Like many people who have purchased a Breville BOV900, after about a year of use, the door got stuck open. At first with enough jiggling, the door would close, but eventually, it got stuck, rendering the oven useless.

This actually happened to me twice. The first time, I got a replacement oven under warranty. The second time, I decided it wasn't worth the hassle, and searched for a replacement. I quickly found out that there really isn't an equivalent oven on the market, so I decided to see if I could repair the door.

As it turns out, fixing the stuck door is rather easy. To do it, you will need a #1 Phillips screwdriver with a narrow neck, a T10 Torx driver, and needle nose pliers.

Disclaimer: I do not guarantee that the steps shown to fix a stuck door on the Breville BOV900 will work for you. By following these instructions, the user takes responsibility for any and all outcomes, including, but not limited to, voiding the warranty, rendering the oven useless, destruction of any property, and physical harm to oneself and/or other.

Before attempting to fix your oven, unplug it, and remove the racks and crumb tray.

To disassemble your oven, you need to remove 12 #1 Phillips screws from the rear of the oven that are holding the top on.

You will also need to remove four T10 Torx screws from the sides of the oven (two on each side).


Finally, remove the six #1 Phillips screws in recessed holes on the bottom of the oven.

Once that is accomplished, you should be able to slide the top of the oven off, or at least maneuver it sufficiently out of the way to facilitate the repair.

On the left side of the oven (the side without the controls), you will find a leaf switch that is controlled by the door lever. When the door closes, the door lever is supposed to press down on the leaf switch, closing it. When the door opens, pressure is released off the leaf switch, and it opens. The switch tells the oven's microcontroller whether the door is open or not.

With enough heat cycles, things deform enough that the leaf and the door lever interfere with each other, preventing the closing of the door. Instead of getting pushed down by the door lever, the leaf gets pushed up and back, stopping the door from closing.

High Five?

This helps no one.

To fix this, use the needle nose pliers to bend the tip of the leaf spring down a bit. You don't have to bend much of the spring -- less than 5 mm (1/4 inch) ought to do. And you don't have to bend it down much. Just enough to clear the door lever. Call it 30 degrees.

Duck and Cover.
Once the leaf is sufficiently bent, the door lever should, once again, press down on it when closed.

Before:

After:

To put the top back on your oven, make sure the slots on it facing the front of the oven slide over the silicon gasket, and it seats properly. Then put all the screws back. Don't forget to replace the crumb tray and the racks and to plug in the oven.

Enjoy your working oven, and hope Breville fixes this design flaw in the next model.

12 January 2019

Bettering Yourself

It's the beginning of a new year, the traditional time to make New Year's resolutions. My resolution every year, even if I don't explicitly state it, is to try to be a better person.

Now, what "better person" means has evolved over time -- at least in the specifics. And over time, I've found pieces on the Internet written by much better writers than me that talk about how to be a better person in whatever specific they were writing about that had some good advice or observation.

This sort of writing has captured my interest more and more the older I get. It's going to culminate in a "what would you tell your 25-year-old self?" essay, no doubt, some time in the future (not any time soon, I hope). Consider this research for that essay.

First, a series of articles by David Brady from his blog, Heart, Mind, Code / Why Dave Why about loyalty in the workplace.

https://heartmindcode.wordpress.com/2013/08/16/loyalty-and-layoffs/
https://heartmindcode.wordpress.com/2013/09/04/loyalty-and-trust/
https://heartmindcode.wordpress.com/2013/08/25/loyalty-and-the-headsman/
https://heartmindcode.wordpress.com/2013/11/07/loyalty-and-daring/

Next, Kate Heddleston's excellent article on being a team player.

https://www.kateheddleston.com/blog/becoming-a-10x-developer

Talin's collection of essays, which I described to my colleagues as "old person knowledge", do a nice job covering the soft skills one picks up as a professional engineer (or pretty much professional anything-that-involves-working-in-a-company).

https://medium.com/machine-words/engineering-insights-15ed954bbcf7

And on being a better person in general, Brady Haran's conversation with Cliff Stoll on the Numberphile Podcast may bring a tear to your eye. Well worth the hour to listen to.

https://www.youtube.com/watch?v=lxdcBD4ppF0

I may re-post this entry occasionally as I add more links. It'll be much easier to find when I need it if it's near the top of the stack, and it'll help make this blog look like it actually contains something, now that Home Run reruns are complete.