Melos M333 Schematic?

john65b · 16th April 2008, 02:59 AM

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?

16th April 2008, 02:59 AM	#1
john65b diyAudio Member Join Date: Jan 2005 Location: Chicago	Melos M333 Schematic? 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? __________________ "I speak Spanish to God, Italian to Women, French to Men, and German to my Horse" - Charles V

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