Find a fridge's uneven cooling came from dusty condenser coils with NotebookLM

Our rewrite with extra checks. The poster didn't test it.

Run this task now, exactly as written below. Everything you need is here, so start straight away and only stop if something required is missing or a rule below tells you to.

Goal: Answer my appliance question using the manual and repair sources I've saved, and give me a short list of causes to check in order.

Fill in before running:
- Appliance and model: [MODEL]
- Sources added to the notebook (manual, invoice, repair guides, videos, forum threads): [SOURCES]
- Symptom: [WHAT'S HAPPENING]
- What I've already checked: [CHECKS]

Safety first: if this involves gas, the electrical panel or mains wiring, structural work, or anything that smells of burning or gas, stop and tell me to call a licensed professional.

Rules:
- Base every suggestion on the saved sources and say which one it comes from.
- Rank causes from easiest to check to hardest.
- Tell me how to confirm each fix worked (for example, with a thermometer).
- If the sources disagree or don't cover it, say so.
- Check facts that can change (prices, opening hours, dates, availability, rules) against the official source, and tell me anything you couldn't verify.
- Remind me to unplug the appliance before cleaning or touching anything at the back.

Output: A ranked checklist of likely causes with the source for each.

You'll know it worked when: the appliance is back to normal, or I know which check comes next.

Before you finish: re-read my goal and constraints, check your answer against each one, and list anything you assumed or couldn't confirm.