Peavey Musician 400 Schematic

[vintagegear86@gmail.com]

Good morning everyone
I'm sorry I didn't answer, I was a little upset about the situation in the world ... I didn't come to the workshop for a few days. I prepared the pictures.
I'd love to fix that Fuzz, I know it sounds bad ... but I'd love to hear it.
It is only necessary to detect the values of the 2 components. The resistor is located in the signal path between Fuzz and Volume, and the value of the capacitor is located next to it.

[Enzo]

Here is Musician A series drawing

I cannot read the tiny numbers, but isn't the value of the white one printed right on it? I tend to doubt the little film caps are bad anyway. And the tiny resistor, what are the color bands in the color code?

I can see the traces from the other side. Hold a light under the board and you should see them clearly. You can easily determine exactly where the parts are connected and verify by the drawing.

[vintagegear86@gmail.com]

The value of the small white capacitor is 10nF. I checked with a friend, he tells me there was the same value but the capacitor was ceramic. I didn't ask why he changed it. The value of the small resistor is 1M. (I don't know why someone used to put it.) According to the scheme you sent me, there should be a 33k resistor at that place.

[vintagegear86@gmail.com]

This is the correct scheme. I am very happy. Thank you so much for help

[g1]

The value of the small white capacitor is 10nF. I checked with a friend, he tells me there was the same value but the capacitor was ceramic. I didn't ask why he changed it.

There is a 10nF connected to the fuzz pot wiper. But the cap that connects to the 33K and volume pot is 100nF on schematic.

[vintagegear86@gmail.com]

Yes, I agree. But that 100nF capacitor is not touched so it is not a problem for me. New electrolytic capacitors have been ordered, now a 2 week-long wait until they arrive as there are no horizontal ones in my country. When they arrive and when I install them I post. Thank you all for your help, I would not have succeeded without you !!

[Enzo]

It really is not necessary to get horizontal ones (we call those axial lead caps) The vertical style (we call those radial) work just as well.

[vintagegear86@gmail.com]

Greeting!!

Axial lead caps have arrived and been installed. The amplifier is now refreshed and correct. Thank you all for your help.
I just have one more question.

When I turn the effect-reverb channel down to the end ... I still get the sound of the guitar.

The same thing is happening on the Normal Channel, but much, much quieter.


Can this be fixed or are the preamps just so loud that they breakthrough?