after reflash with ubuntu 16.04.7 tk1 doesnt fuly boot

My TK1 was broken due to an update dat broke the kernel

So i used your guide to reflash it with a dedicated mashine but after i got teh reset message and i reset de tk1 it will not boot trough 

I can see it try to boot linux for a spit second but then the screen goes to no signal and nothing ever happens 

I have no DB9 cable atm so i can use putty/terminal to see the serial output

