Hello all, I have a friend that has a Melos M333. It has three sections ot units - a phono stage, Power Supply, and Line Stage Preamp. All are connected to ech other via a cables with a special DIN type connector.
Anyway, the PS with Preamp works fine. When the Phono stage is added, it blows a fuse. I can hear the toroid buzz when the phono is added. I also powered the phono with no tubes (pair of 6922 and 12AX7) and still heard the toroid buzz...PS section has separate left and right power switches that have off/line and phono selects.
The PS section has three toroids. Two of which are dual 12v secondaries, and one unmarked which seems to go to the Phono stage.
Anyway, a schematic would help troubleshoot this puppy. Anyone have one to post?
Anyway, the PS with Preamp works fine. When the Phono stage is added, it blows a fuse. I can hear the toroid buzz when the phono is added. I also powered the phono with no tubes (pair of 6922 and 12AX7) and still heard the toroid buzz...PS section has separate left and right power switches that have off/line and phono selects.
The PS section has three toroids. Two of which are dual 12v secondaries, and one unmarked which seems to go to the Phono stage.
Anyway, a schematic would help troubleshoot this puppy. Anyone have one to post?