Hdtv freezes after a few minutes

Hi guys

I have a bit of an issue with my setup… I have:

Raspberry pi 2
PCTV 290e dvb-t2

SD TV runs fine but when I play anything from a HD source it plays fine for a few minutes then the picture just freezes… Kodi still runs ok and I can stop then start the channel again but it does the same after a few minutes…

Anyone have any idea what’s wrong.?

Could be a power supply issue, but without a log we are just guessing.