I used to work in retail customer service, and I noticed a huge pattern with returns. About 80% of the time, when a customer brought back a "broken" electronic toy, RC car, or gaming device, the item wasn't actually broken.
The problem was just dead batteries.
Even if you just bought the item, the "demo" batteries included in the box often don't last long. Before you go through the hassle of driving back to the store, waiting in the return line, and explaining the issue, try this simple fix:
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Swap the batteries: Put in fresh, high-quality alkaline batteries (not the cheap heavy-duty ones).
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Check the contacts: Ensure the batteries are facing the right way and the metal springs aren't bent.
Pro Tip: Stop guessing and get a Universal Battery Tester. It takes 2 seconds to check if a battery is actually dead or if the device is faulty. It saves you time, energy, and money on buying new batteries you didn't need.