Fox Micron SX Bite Alarms

Can anyone help? 2 of my fox micron SX alarms have developed the following fault. The lights on both the alarms are permanently on, one only faintly the other on full power. Last year i put a new bolt in the bottom of one of these alarms for the bankstick, so invalidating fox's warrenty. The alarms still work appart from this. Does anyone know if they are fixable and any idea of the cost involved. Cheers

Fox may not fix them under warranty but they have an excellent customer service which you can access via the internet, they will give an honest opinion so give em a try m8.