anishkgt:
I've not ignored your correction on the contrast pot. I've not left any pin floating one connected to 5v and the other pin to GND. The sweep is connected to pin Vo
So you didn't actually read what I stated then? 
OK, I do realise you are having troubles getting your board to work and I admit this is not a big problem, certainly not anything to do with your present problem, so you looked at it and your mind was entirely elsewhere, nothing "sank in". 