Yesterday after lighting strom . i have a issue with my 3 router board port issue .. every router 2 port not working .. 
I need to repair .. can any one provide me any information …
Abubaker Siddiq Lasnaia
Good luck with that! Lightning could have adversely affected any [or every] component on the board - you won’t be able to tell by sight alone, and you could spend days or weeks replacing each component one by one, and still not have a fully working board at the end of it. I would just replace all the affected units.
I have a rb 493g & 450g
On 493g 8port working fine only 1 port not working and in 2 450g 3 ports are working fine.