When your partner shouts from the kitchen, "Honey, the oven's self-clean feature isn't working!", you will likely sigh and think how you've got plans for the weekend already. Fear not, fellow DIYers! I've got your back. I’m Big Mark, a professional repairman ready to give you some first-rate tips and tricks so you can give that oven a new life while keeping your weekend plans intact.

Delve into the Dilemma – Why Isn’t My Oven Self-Cleaning?

The foundation of solving any problem lies in understanding it first. Before we roll up our sleeves and unscrew a dozen different things, let's get a grasp on the basics. Your oven's self-cleaning woes could likely be due to four main culprits:

  1. Faulty Door Locks: This is the usual suspect. If the oven can't lock itself during the high-heat cleaning process, well, it won't even start cleaning.
  2. Defective Thermostats: Here’s the nasty villain that robs your oven of its temperature-regulating capabilities, making self-cleaning impossible.
  3. Broken Heating Elements: It's hard to clean with heat when the heat’s not there. These rebellious elements might just be your issue.
  4. Controlling Circuitry Gone Haywire: If you see your oven controls doing their own fancy disco, then get ready to dance to the tune of broken circuitry.

Fix #1: Tackling Door Lock Drama

Alright, let’s get started. Get yourself a Philips head screwdriver, a pair of insulated pliers, and maybe a cool beverage—it's time to be the oven whisperer.

Most oven door locks are mechanical and are located at the top of the oven. You'll find a small lever or latch. Playing around with it gently (no heavy-handed hulk mode, please) can sometimes do the trick. If the lever's stuck or broken, get a replacement. Don't worry; they're fairly inexpensive.

Remember, safety first! Always make sure the oven's switched off and cooled down before you start investigating.

Fix #2: Torment of the Temperamental Thermostat

The thermostat is the guardian of your oven's temperature. A faulty one can prevent the oven from reaching the high heat required for self-cleaning. Thermostats come in dial and digital types. If you've got a dial-type thermostat, adjusting it just below your regular cooking temperature can often jog its memory. However, if it’s digital or if fiddling with the dial doesn’t work, it may be time to get professional help.

Fix #3: Handling the Heat - Repairing Heating Elements

If you’ve ignored your oven long enough, your heating elements might have decided to take a vacation. Inspect them for any signs of damage or wearing out. If you spot cracks or blisters in the coil, it's time to replace them. While you can do it yourself, I'd advise involving a professional if you're not too sure. All those volts buzzing around can give you a zappy surprise!

Fix #4: Circuitry Chaos – Dealing with Electronic Controls

If you've noticed your oven's display acting erratically or not responding, then we’re possibly dealing with circuit issues. This, fellow DIYers, is the trickiest of them all. As an experienced repairman, I'd recommend letting professionals handle this. Opening up your oven's electronic control panel isn't really a typical Sunday DIY project, especially if you don't want to void your warranty.

In a Nutshell - Or an Oven!

While you may feel like a character in a detective novel, hunting for culprits and solving problems, remember to stay safe during your DIY investigation. The thrill of fixing things with your own hands is unbeatable, but don't bite off more than you can chew (or unscrew).

Wear protective gear, avoid manipulating anything without proper knowledge, and go ahead and call in that expert if you need. After all, the goal is a fully-functional oven that lets you bake those dozen pies for the neighborhood party without sweating over a manual scrub-down. Good luck, and may the repair gods be with you!