My television is just over 2 years old and it started that it would switch itself on and off 3 times before it would stay on and it was randomly switching itself on if I didn't need it to. I phoned the Samsung support line and they told me to reset the television which has only made it worse! It is now taking around 2-3mins to switch on and that is only IF it switches on. Then around 5 mins in it will switch off then stay on. Please help!!

There are four capacitors on the power board that the switch is connected to that are failing, eventually they will go completely and the set wont turn on at all. You need to replace the capacitors and the problem will be resolved. Find someone to replace them for you, they will cost less than £4 GBP to buy if you can do it yourself (or someone you know) probably over a hundred to get an engineer to do it

Your TV probably has a faulty power supply. Get it repaired before it gets worse and damages other components.