fender amp sounds

What could be wrong with my Fender amp?
I have a Fender Hot Rod Deluxe tube amp, and as I was practicing, I heard a popping noise and no more sound would come out of the amp. Here are some more details that could help troubleshoot the issue.
The tubes seem to be working, because they still light up.
Absolutely no sound is coming out of the amp.
I tried both inputs and neither would produce sound.
I was not playing unusually loud (only about level 4)
I bought the amp last summer.
i dont know but you probably shouldn’t sell you friends bike though
Guitar Lesson – EQ Settings On Your Amp