New Motors And Now My Drone Doesn't Work! Help! No Startup Tones! - FPV Questions 

In situations like these, using a power supply with an amp meter comes in handy to check if ESC is at least drawing current, shorted out or if it is totally dead. In this case, I wonder if when the motors got mounted back on, he used screws that were too long on the motors and are now shorting out the motors with the frame.

Check if the power wires are still good, if the battery voltage is getting to the esc. The cable could've ruptured inside the insulation... Or something.

It took me a long time to find what the tones meant when I started in this hobby. My first build was getting no tones, then just 3 tones. I struggled to find information on what the tones meant. Finally I found that the first 3 tines was the ESC initializing and the final 2 beeps was the ESC saying it is talking to the FC.

Must have shorted the ESC, that happens often with stacks that are squished too much. Check for scorch marks, that’s a clear indicator.

Different motors - different motor base height, bolts shortened motors to the frame. Unscrew the motors from the frame and try powering up again.

the no esc beeps could be a short somewhere, seen it before

If you were using a smoke stopper like the ViFly and only one motor was connected, I think that could possibly trigger before so none of the startup tones would be heard.

If there is a one in a million chance to screw something up it will be me to do it lol. If I didn't have bad luck I'd have no luck at all. Crashed it and killed 2 motors but other 2 still spun. Got all new motors soldered in and nothing. First time soldering motors so I could have screwed it up doing that. Lesson learned I guess

Burn up the ESC, it happens...hush.. dont stress , just get a new one.

1:19 "what else did you do? " -story of my life!

Why do I suddenly feel invested in Brandon's motors not working? Got to plug in that battery bro. USB don't make the motors go beep beep.

Why are you adding new motors? did you have a crash? That could be an ESC issue?

Battery lead maybe bad???