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Hello All, I have bought an older Fusion 550 from Gallien Krueger from a friend of mine, after using it for 10 years without any problem in our band room. Now after pushing the on Button the main converter smoked off. I have a very good technician by my side who is now looking for the schematics of this main converter to maintain the windings. Therefore we need the correct Volts etc which were not supplied by G&K so far. There was a creation error when the Amp was buildt, as the main converter sits on a rubber buffer to absorb vibration. The power supply has been placed between the case body and the converter bottom. By scewing the converter agressively to the case the main supply was squeezed completely between both parts. Now after all these years the failure came up resulting in a damaged main Ring Convertor. Hope you find some Schematice which I can hand out to my technician ? Thanks in advance and sorry for my German English 
Moderator edit: New thread created from this.
Moderator edit: New thread created from this.
