TVs not working

[condor]

Hi - I'm currently staying in my dad's apartment and both of his TVs are not working. The main one was fine yesterday as I watched a few main channels ( CH4 and BBC1)and switched it off via the stand by button. It now seems stuck on stand by. I've switched it off manually and off at the mains and back on again and nothing that I do changes it from standby mode - it's got a Sky box as well which is on stand by too at the moment.
Any ideas as to what it might be?

The other TV just has a digi box and although I can get the channel numbers to go up and down there's just a noise type picture ie lots of white bits on a black background.

[condor]

No they are on stand-by. Last thing I watched was on freeview if that makes a difference.

[condor]

The TV in the other room isn't on sky it's just got a digi box.
The main TV which is the one that has sky plus is the one that is stuck on stand-by. I think me watching stuff on freeview might have messed it up.

[condor]

The TV and sky plus box things being on stand-by is a red light by the on switch for both.
I have cable at home so have no real idea how Sky works - I have managed to record programmes using it - it's just nothing is working now.

[condor]

The 2nd TV isn't attached to Sky - has just got a digi box to convert what was once the analogue stuff to digital. It was the main TV I was more concerned about - I only went to the spare as I wanted to watch a programme and obviously have missed it.

I don't understand how it's been working fine for the last few days and the only thing different I did yesterday was not use the Sky remote control but used the TV one to view CH4 and BBC1.

[condor]

Thanks to the posters that have helped - the thread has now been moved to a minor forum. I'll pay for a TV repair man tomorrow and update on the cause.

[condor]

The main TV is now back working - the problem was it needed me to press down on the standby on the remote for a lot longer than I was doing. Simple really at least the repair man was able to impart this instruction over the phone without him having to be called out
The other TV said I just needed to press the TV button on the remote - have tried that but it still didn't work. Never mind - as long as the main TV is back working the other can wait till later.