Sanyo 25 inch stuck on blue video screen?

I have a 25 inch sanyo tv and my daughter turned it on one dya and it has been stuck on the blue video screen ever since. I have tried to unplug it and leave it unpluged and that hasn't work. I also tried the input button on the remote but it is not the original remote so I am not sure if that has something to do with it not working. I am a single mom going to school full time and I cannot offord a new tv so hopefully I can get it working again. Thanks!