My Tv Won't Switch On !!

[Thisoldbird]

I was watching YouTube video earlier. Went to the kitchen to find it was switched off. Black screen on my return . 

Usually the standby switch is on at all times. 

I've tried removing the plug a while. When I plug it in the standby light is on, but as soon as I try to switch it on the standby light goes out. 

I've tried holding the on off switch a minute or so as recommended in a trouble shooting guide..makes no difference.  

Any ideas please. It's a Highsence 40" about 4 yrs old. 

 

 

 

[barry1010]

When the standby light goes out try pressing 1

[JinnyJoan]

turn it off at the plug for a good 20 to 30 minutes.  I know it is long but hopefully it will work