Since the April update, my tv point blank refuses to connect to the wireless network.

The issue is with the tv, as multiple other devices in the house work perfectly.

More often than not, the television actually shows that I am connected to my chosen network.  However, when using apps such as Netflix and YouTube, I am advised to check my connection.

Going through the settings menu, I experience a mixture of connected and not connected messages.  I have tried removing and re-adding the saved network but to no avail.  Occasionally the Wi-Fi icon is displayed with an explanation or question mark.

I have tried resetting both the tv and my router but with no joy.  As mentioned previously, the firmware is up to date and I never experienced this issue prior to the recent "update."  It is also worth noting that the tv works perfectly when connected using a network cable, but this is not convenient for me given the location of the master socket in my house