If you are getting frustrated by the annoying beeping noise from your Frigidaire microwave, then fear not! 🙂 It is possible to turn the sound off. 

Video Tutorial

Written Guide

1. Press Clock (symbol) 2 times. 
2. Press Start when you see oP -2. 
3. Press Start when it flashes to on. 

If you miss the sound after turning it off, then follow the same steps, but this time wait for it to flash off instead of on when you get to Step 3.