Burman Pro Series 501 Amplifier Chassis Recap/Service Lovely well made British Valve amp in need of a recap and general service Love the transformers well overspecified! So neat in there! Caps needed to be replaced Glued in the holders.. some type of tape.. New one in position all good! Ah that will be why the custoer said it was not working well…one supply not connected.. New caps a little smaller… All in place After biasing and testing she sounded great but the bright switch was having no effect… it was simply not switching.. a new switch fixed her. All working as should on the bench a great sounding amp!