Solved! Two TVs won't turn on

Feb 8, 2018
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Our TV stopped working - the red light was on at the front but when you pressed the remote, it flashed red but wouldn't turn green and switch on. It was like it had power but not enough... Assuming it was broken, we swapped it and put our other TV in here. It worked at first...then the same problem. Occasionally it will just not switch on. We've tried switching the plug sockets assuming it was that...but then it won't work in the new socket either.
Any suggestions?