Some keyboard functions lost when replacing battery for Macbook Pro 13 2014: 1qaz

[thussain]

I have replaced my macbook pro 13" 2014 battery but ended up losing some keyboard functions: 1qaz, backspace dim, brightness and volume down. Have i damaged the circuit or something since 1qaz are in a row?

I have used the input keyboard in systems preference and can see that when i click on these keyboard buttons i have mentioned that they are not recognised by my laptop.

 

[Audit13]

Have you tried reseating all of the cables and connectors?

Is the brightness down for the display or keyboard backlight?

Did you try re-installing the old battery to see if the problems go away?