Hello
I have bougth this device and got an issue with overheating the CPU when used for video play by KODI/XBMC player. The same issues were with playing Youtube videos.
So I have decided to investigate an issue and first my thoughts were about software/firmware.
But when I opened the case I saw "heatsink".

Well. It was attached to CPU by using sort of glue, not the termal paste.
After some searches within my own hardware archive I have got heatsink from old videocard and with a little cutting replaced original with a custom made

Now CPU is cold enouph with an issue - it can't feet original plastic case anymore.
I will do injecting it into TV case some time later.