Ah, that's a good question! Finding a blown bulb on Christmas lights can be a bit tricky sometimes. Here are a few tips that may help:
1. Check the circuit: If the entire string of lights has stopped working, check the circuit breaker or fuse box to make sure the power supply hasn't been disrupted.
2. Check each bulb: Check each bulb individually to see if any of them are loose or have a burned-out filament. You can do this by gently wiggling the bulb back and forth and checking for any bright spots or flickering.
3. Replace the bulb: If you find a blown bulb, replace