Old 8802 mediamatrix bob problems

Hi all,

We have a number of 8802 bobs in our theatre, together with a miniFrame.

We've had a number of bobs fail recently, two faded out over time and another lost its link light and all the input leds bottom row all flash.

Does anyone have any common fault suggestions / tips / service contacts?

We have one spare unit left and our entire show relay and paging relys on mediamatrix / amx.

Kind regards,
Tom