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Marantz 3200 restoration buzz one channel.

Morgan250

New Member
Hello everybody,
I have completely restored a MARANTZ 3200/140 set. I was inspired by the restoration of Patfont's, by the way, a big thank you! My set works perfectly, a warm and detailed song as I like :) I just have a small problem, on the left track I have a slight buzz. It comes from the preamp, even when the volume is at 0. For information, I changed all the electrolytic capacitors, the semiconductor transistors of the output amp / relay, power supply, and preamp cards ... I checked the cables mass ... I can't find where it comes from, it annoys me;) When I activate the "reverse" mode, the buzz goes to the right speaker ... I'm sure that comes from the preamp because I tested the 140 amplifier with a CD player.
Does anyone have an idea?

Morgan
 

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