Have you tried working with the other display output ports on the GTX1050Ti?
Please parse the specs to your build like so:
CPU:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
If all you have are TV's, I'd ask you to see if you can take the system over to your friend's or neighbor's house and hook it up to their known working display with all the display output ports and see if you get any display output. If the processor you have has an iGPU, I'd also try and hook it up to the motherboard's display output ports.