Check lights error fault

[alano]

I am hopeing someone can help with this one.
I started to look into the fault on my dash and
It was something to do with the main lights switch fuse
Board. I replaced this after great hastle and sweat
With a known good one. Now this f-/:;(g check light
Error is still there and that's after my local car Mech re set the fault
And low and behold its still there. Im I missing something ?
Can anyone help ?
This is driving me mad ..... :-(

 

[StevenN]

Are you sure that fault is with that part and not the bulbs.
It has been said that sometimes they degrade as they get old.