Would be a shame to call me a DIY expert, so hoping the GZ community can assist.
The top button on the wall switch in our bathroom has suddenly gone wonky and doesn’t work.
I’ve taken the front plate off, but nervous to go any further.
What’s the likely issue? Can I buy a new button or do I need an entire new switch?
And if I take the entire plate off, do I switch the mains off?
One photo with the button in off position (wonky) and one in on position (wonky).

