Tell us what it's doing. We'll rank the likely causes, show you the free things to check first, and tell you honestly which ones need a licensed technician.
Safety first: unplug an appliance before you inspect it. Never open a microwave cabinet — the high-voltage capacitor holds a lethal charge even unplugged. If you smell gas, leave and call your utility. Anything involving refrigerant, gas lines or sealed systems requires a licensed technician by law.
That's what we're for. Factory-trained techs, flat $99 diagnostic, same-day and next-day slots.