Thanks for following up, tamey179.
When we are troubleshooting a device, sometimes it can help to narrow down whether the problem is with the device itself, or the device it is connecting to. For example, when you connect to the other TVs and there is no issue, it lets us know that the iPhone is in good working order. If it failed to connect to any television, we would recommend hardware evaluation, and possible service.
In much the same way, with the TV that is not being able to be connected to, we can test to see if another iPhone might have more luck. If we find that another device also can't connect to the same television, it might need to be evaluated for service if a component has failed.
Give that a try, and see if there is any change. If not, you should contact the television manufacturer for support and possibly service options.
Take care.