Bruno stairlift troubleshooting and battery replacement. Bruno chairlifts should only be serviced by trained stairlift professionals. Is your Bruno stair lift beeping or not working? With normal use of a stairlift, the batteries will need to be replaced or we will need to troubleshoot the lift. For help with these issues give us a call at 866-721-6004. We serve the Northern Virginia, DC and Maryland area.