Lovepedal - Vibe/Magicboy  [traced]

General documentation, gut shot, schematic links, ongoing circuit tracing, deep thoughts ... all about boutique stompboxes.
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DjPsychic
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Post by DjPsychic »

I know there's another Lovepedal Vibe thread but I went out and got an actual Lovepedal Vibe/Magicboy

A proper trace/schematic/layout if anyone is up to it would be awesome!

I've never dealt with 5-band resistors before so let me know if anything is off. Also I couldn't get a good read on the diode so apologies for that

I'm 99% about the JFET's.

The random strips on the copper traces are from double sided tape

Here ya go!
LPMBV.jpg
TRACE1.jpg
TRACE2.jpg
diode.png
diode.png (1.03 MiB) Viewed 2889 times
Last edited by DjPsychic on 19 Oct 2021, 22:13, edited 1 time in total.

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DjPsychic
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Post by DjPsychic »

Better shot of the pot connection
pot.jpg

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Post by DjPsychic »

This is my first attempt at a trace so apologize ahead of time.

I realized how shitty my pictures were, I'll have to reopen and get a better look. Some of the lines aren't 100% accurate but connections seem to be all there.

Edit/
TRACE.jpg

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Frank_NH
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Post by Frank_NH »

Hmmm... That looks like an older GGG board for an MXR Phase 45 clone...

http://www.generalguitargadgets.com/pdf/ggg_p45_sc.pdf

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Post by DjPsychic »

Frank_NH wrote: 21 Oct 2021, 11:45 Hmmm... That looks like an older GGG board for an MXR Phase 45 clone...

http://www.generalguitargadgets.com/pdf/ggg_p45_sc.pdf
Interesting. I know the board is made by JD Sleep. Ill shoot him a message and ask

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Post by DjPsychic »

From JD,

“ What we have on the site is a somewhat different layout from the one I did for Sean, but, yeah it's a P45 with a couple mods, one of which is the "Vibe" mod listed on the site project. I think the only other mod was a 10uf for the output cap, which may or may not affect the tone, depending on the rig it is involved in. Sean thought the caps and transistors we used made a big difference in the sound, but those are now obsolete and hard to find.”

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Post by Frank_NH »

I saw the vibe mods at GGG. I suppose you can do that for any Phase 45 PCB. The demo I heard of the vibe mod sounded pretty good!

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Post by Manfred »

Hi DjPsychic
Thanks for the shots and filling in the values.
I have a PCB clone with SprintLayout 6.0 in work,
after completion I will trace the connections and draw the schematic.

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Post by DjPsychic »

Manfred wrote: 22 Oct 2021, 14:49 Hi DjPsychic
Thanks for the shots and filling in the values.
I have a PCB clone with SprintLayout 6.0 in work,
after completion I will trace the connections and draw the schematic.
Excited to see it, thank you!

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Post by Manfred »

So far it would be done.
The region around the potentiometer, which I marked with the yellow ellipse, is difficult to recognize.
I assume that this connection to which the yellow arrow points exists.
Please check the layout with your original PCB.
I will start tracing soon.
LovePedalVibePCB.jpg
LovePedalVibeLayout.JPG

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Post by DjPsychic »

Here's an existing pic off my phone I've reversed. Sorry haven't had a chance to reopen.

I'm pretty sure this is the connection you need. If you need a better pic just let me know.

Thanks!
connect.jpg

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Post by Manfred »

Thanks, I first start the tracing,
if I need more information I will get back to you.

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Post by Manfred »

Your green arrow points to the red one I have now drawn in, this connection was already visible.
I meant the parallel yellow marked connection above this one.
LovePedalVipePCB2.png

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Post by DjPsychic »

Opened it back up, and yes broke the pot connection :blackeye

But here you go
EAB1DA27-C4B8-4BB6-87DC-9D72E7A5BECC.jpeg

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Post by Manfred »

What are the size of the PCB?

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DjPsychic
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Post by DjPsychic »

39.7 x 53.7mm

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Post by Manfred »

DjPsychic wrote: 25 Oct 2021, 10:21 39.7 x 53.7mm
Thanks

I asked you because it was difficult to generate the template for the PCB layout,
which I can insert in SprintLayout 6.0, from the photo.
I created the templae using the perspective transformation function with GIMP.
It never works out one hundred percent but this time it was worse.
I adjusted the traces, for the tracing this is enough.
After that I will rework the layout and adjust it in size and appearance.
I put, if possible, the PCB on the scanner, that gives a veil better result than a photo.

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Post by DjPsychic »

You can probably make a little bigger if needed. The enclosure used is small.

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Post by Manfred »

DjPsychic wrote: 25 Oct 2021, 10:21 39.7 x 53.7mm
Thanks

I asked you because it was difficult to generate the template for the PCB layout,
which I can insert in SprintLayout 6.0, from the photo.
I created the templae using the perspective transformation function with GIMP.
It never works out one hundred percent but this time it was worse.
I adjusted the traces, for the tracing this is enough.
After that I will rework the layout and adjust it in size and appearance.
I put, if possible, the PCB on the scanner, that gives a veil better result than a photo.

I found two wrong Compontes values:
LovepedalVibeValueCorrection.jpg

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DjPsychic
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Post by DjPsychic »

Yes you are correct, my apologies!

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