Switch light switch with 3 red wires now not working

[scouse49]

Asking for my daughter who changed two light switches from a plastic to a metal switch, lights not working now. So we have changed the light switch back to being the plastic switch but lights still not working. Other downstairs lights are working so fuse has not blown.

There are 3 live wires and a yellow sleeved wire (strange), the black wires are joined together. The yellow wire is in the comm terminal so that must be the return, then the 3 red are all in L1. We didn't take a photo before it was changed, so have no way of checking to see it is correct. She also changed another light switch which is on the circuit and that is not working, could that be the cause of the problem?

 

[EFLImpudence]

As all the reds and yellow are connected when the switch is on the light should be working anyway.

She also changed another light switch which is on the circuit and that is not working, could that be the cause of the problem?

Could be. Was it working before she did this second switch?

Show a picture of that wiring.


The metal switch will need connecting to the earth wires.

 

[AndyPRK]

picture of other switch required

 

[scouse49]

Here is a photo of the other switch. Thanks for your comments

 

[scouse49]

Everything was working before she swapped them over to the metal switches

 

[AndyPRK]

Is there a small red link wire linking COM and L11. That looks wrong if it is.
usually the link wire is between the COM terminals.

That also raises the question as to whether the top and bottom red wires go mixed up.

What room are these switches in ?

 

[AndyPRK]

Did those switches use to control the same light ?

 

[EFLImpudence]

Also - there is nothing connected to one end of the link yet a wire in L12.

 

[AndyPRK]

If you get the double switch correct, the other switch may start working (if are lucky)

 

[AndyPRK]

I think it’s just 1 way switching
Supply linked through the switches, so not reaching down stream switches ?