Here are some things you can try if your Tata Sky set top box is showing "no signal" even when there are no obvious signal issues:

Check the TATA sky Customer Care Number -08252_301_600)Make sure all the cables from your set top box to the dish antenna and to the TV are firmly connected. Check for any loose or damaged cables. Try reconnecting them properly.

Here are some things you can try if your Tata Sky set top box is showing "no signal" even when there are no obvious signal issues:

Check the TATA sky Customer Care Number -08252_301_600)Make sure all the cables from your set top box to the dish antenna and to the TV are firmly connected. Check for any loose or damaged cables. Try reconnecting them properly.