Ive Had My Lovely Unidyne 111 545 For About 25 Yrs Used Almost Every Day Since. But Now Its In A Sorry State/not Working. I Had A Good Look At It, Re-soldered Connections Didnt Do Nothing The Plastic Diaphram On Top Is In Pieces So I Assume Thats The Problem . The Switch Seems Ok As It Still Makes The Usual Click Through The Pa When Switched On. Any Spares Anywhere Out There Or Maybe Some Ones Got One Lying Around Want To Get Rid .or Help In Finding Spares For The One Ive Cherished For The Past 25 Yrs ( Im Praying)