Hi,Fender3D wrote: ↑17 Sep 2011, 12:00I reworked on this 'cause some requests...theehman wrote:I don't suppose this new board will fit into an old MXR Micro-Chorus housing? I have 3 w/ bad SAD512Ds.
I redrawn the schematic, some minor changes from mictester's http://www.wizardinside.it/foto/schemi/ ... _schem.pdf
m_chorus_schem.png
Then PCB, it'll fit into MXR's boxes http://www.wizardinside.it/foto/schemi/m_chorus_PCB.pdf.
I'm modifying my micro chorus which has a dead SAD512, according to the Fender3D's upgrade.
So basically I just have to:
- replace two resistors (R27 / R36) in order to adjust the bias
- replace two capacitors (c14 / c16) to have a proper clock
- unsolder the old SAD512 and connect to a dedicated board with the MN3007 and a few components
Actually there's one thing that surprises me: the MN3007 is supposed to be powered with a negative voltage, thus -9V on Vcc.
According the the Fender3D's schematic, it seems to be powered with 9V instead.
Did I miss something?
Thanks !