@Atul2 

Sorry about the delay in responding, I've been focusing on other tasks.

You can try these, settings as they're what I used.

static ip: 192.168.0.128
router:    192.168.0.1
dns:       8.8.8.8
2nd dns:   8.8.4.4

Good luck, I hope that this helps.

  @Atul2 

I had replaced with new AX73 router, but it was also not working. It was test by technical support team but no solutions and so finally i returned this new AX73 router.  I suggest all to check connectivity with TV, because it may not working with some of models. I am not saying that it is not working with  all tv, but definitely there is issue of this routers with some of tv model. I did not find this issue in other router, or even old router of TPlink works fine.  

Now i dont want to take any risk again, and so thought to buy router from other brand. I  hope it will work without any issue. Still today i was using tplink router, but now i will give a try to another brand. I think ASUS will be best for it.  Thanks for all of your support.