PS4 slim Turns on but wont connect to tv (no signal recieved on TV

Hi There,

When i turn on the PS4 slim (present at christmas from santa kids extremely upset im not though but i will try get fixed) the blue light comes on then it goes white and no signal to television. I have tried to reset holding down the start button for the 7 sec two beeps and still no fix, i would appreciate any help you can offer on this as its only 6 months old and i would expect a piece of kit like this to last longer especially when you pay so much for it.

Regards

Mick Gannon