Question

How to fix an lg TV that would turn on but there is only one channel working.

but before all the channels were working.
HELP ME PLEASE.

Answer 1

Just try completely rebooting the television and then re downloading the channels again also reboot your cable box. If this doesn't work see if you can find a warranty on the T.V. and replace it. Hope this helps, have a nice day. :)

Answer 2

In desperation, and with the clock ticking down to the must-see Reds v Crusaders game, I gambled on running the 'factory reset' function, then reinstalling all the channels.

Result: success!

Might be a useful tip for anyone else who finds themselves with this problem.

Cheers