How to fix a black screen tv!

[Subhan20000]

When my mom moved the tv stand,and later I tried to watch tv.It has audio but had no pictures!It also flashed for a second and went all pitch black!Help me I want to watch my favourite show!

 

[Saga Lout]

Something came loose somewhere, hopefully outside the case. Check all the connections round the back, especially the aerial or satellite connection.