Sound Problems on iPad: how to fix, easy [video]

Question

Hi dear iPad user,
Most people will, eventually, have sound problems: the cause can be complex as a 'miss-behaved' app that messes the sound engine or as simple as the iPad being forgotten on Mute/Volume Down.
I used to help family and friends to fix their iPads' sound problems by sending them 'text' instruction steps... lots of times they ended up calling me on the phone...
So I made a video (short: 1m40s):
https://www.youtube.com/watch?v=FjBP-Ncj_fE
It shows:
how to unmute the sound (even if the side-switch locks the rotation of the screen)
how to put volume up
how to close all the apps (in the case there is an App messing with the sound system)
how to reboot the iPad (ultimatelly fixes hard cases of messed sound system)
What it won't fix: if you have a hardware problem...
If you do all the steps and you get NO SOUND AT ALL, please, try also checking if you car listen sounds using a HEADPHONE (you know are working conditions). If you can listen to sounds in the headphone but no sound at all in the iPad's built in speaker, well, there might be a hardware problem and you should look for help on an Apple Retail Store or other official technical support available at your location.
Hope this helps!
Everson.

Answer 1

UPDATE: fixing iPad Sound after iOS 7
http://youtu.be/SDf1LDcE95Q
(1min 36sec)
It covers the basics:
checking side-switch / mute / "Control Center"
volume all up
...and also the worst cases:
closing all apps (for rare cases when a single app might render the sound system instable)
rebooting the iPad
So, don't get desparete: try the things in the video.
There are people who reported having forgotten an audio-bluetooth connection activated with a turned-off sound-system or speakers... or forgot Air-Play turned on... so be sure you disengage bluetooth and/or airplay.
On the 'hardware side', dirty dock connector (30 pin) can make the iPad 'think' it is connected to external audio - if so, cleaning it with a dry toothbrush can fix. Also, moisture in the headphones connector can make the iPad switch to 'headphones' even without headphones connected, making it silent: check if you can hear things with headphones plugged in - if so, try gently inserting and removing headphones a few times and check if you get sound back to iPad's speakers alone.
Good luck to everybody! Audio problems are quite common - fontunately they are easy to fix.