Wiring Diagram for Silo 20th

[whitestrat]

Does anyone have the wiring diagram of the 20th WITH PIEZO? I'm encountering a strange problem, and I've determined it's not the pickups. I need to know where to start looking, and would at least like to know that everything is where it is...

My bridge humbucker sounds like a single coil... I've changed the pickup, and it's the SAME PROBLEM. meaning it's not the pup. I want to know now whether it's the PCB in there, or the 3 way switch? everything else is working fine. Even the neck pickup is fine.

HELP!!!!!!!

 

[guitarman23]

Check Here? http://www.ernieball.com/mmonline/techinfo/

 

[whitestrat]

Check Here? http://www.ernieball.com/mmonline/techinfo/

I'm guessing you don't own a 20th? It's different from anything else I've seen. Even the JP6 is simple compared to this. I wonder why it's so different. The PCB in there is large.

P.S. the schematic isn't on the site. I checked earlier...

 

[guitarman23]

Then One Should Be Created?

 

[Sweat]

Hey I have one, send me an email at [email protected] and I will send it to you.

 

[PeteDuBaldo]

I've done some experimenting with the wiring in my 20th/piezo and I know how to make the bridge pickup only fire one coil. I also know how to make both coils work. Shoot me an email [email protected] and I can send you high-res photos of what to do. It's very simple but difficult to explain without pictures.

 

[beej]

As per the discussion on the questions thread ... it sounds to me like the wiring isn't right. Once you get the wiring diag from Keith or MM check it out (I don't have one for that).

But the Dimarzio wiring is consistent- Red to selector switch, Green & shield to ground, and Black and White soldered together for standard humbucking configuration.

As Pete mentioned, you can split the p'ups. Soldering B&W to ground or wiring B&W to the selector switch will give you either coil, respectively.

If it's buzzing (noisy) then you have only one coil active. If it's noise-free but weak (single coil sounding), it is likely wired up in parallel instead of series (ie, the outside leads from each coil are wired together instead of one coil feeding in to the next).

My two cents ... but it's likely that rather than a problem with the piezo board. But who knows.

 

[PeteDuBaldo]

Here is how the factory wires the original pickups in the 20th Anny Silo - these photos are correct, even though they do not match the color stamped on the board. It has to do with the way both pickups are wired for the middle toggle position.

A - White & Ground from neck
B - Green & Red from neck
C - Black from neck
D - Red to toggle
E - White & Ground from bridge
F - Green and Red from bridge
G - Empty
H - Black from bridge
I - Brown to toggle

If you connect the Green & Red from the bridge to position G (empty) instead of position F you will get a single coil from the bridge pickup. Double-check and make sure you have these wires in the correct position (position F)

The same goes if you take the Green & Red from position B and wire them to the unlabeled pad directly below B - you will get a single coil from the neck pickup.

It's easy enough to solder on the wrong pad while wiring/rewiring the pickups.

 

[beej]

Once again, Pete is the man! Those colours seem quite different than in the non-piezo version. That clears things up. (Btw, Pete I have not forgotten about your project ... will email you today.)

 

[whitestrat]

If it's buzzing (noisy) then you have only one coil active. If it's noise-free but weak (single coil sounding), it is likely wired up in parallel instead of series (ie, the outside leads from each coil are wired together instead of one coil feeding in to the next).

Dude... I think you nailed it. My friend (guitar tech with the largest retailer here in SG) who's checking the wiring on the guitar REALISED that it was originally wired in parallel. Even the factory wiring was done like this. Strange thing was, the pick up was also noisy when I tried it yeaterday. I'll have to run through this later.

This means, there's nothing wrong with my Virtual HOT PAFs!!! Yay! I'm gonna go over to try out the guitar later and see if this is the case or not. I hope this is it, and it settles that problem!

Thanks guys!!!!

 

[whitestrat]

Here is how the factory wires the original pickups in the 20th Anny Silo - these photos are correct, even though they do not match the color stamped on the board. It has to do with the way both pickups are wired for the middle toggle position.

A - White & Ground from neck
B - Green & Red from neck
C - Black from neck
D - Red to toggle
E - White & Ground from bridge
F - Green and Red from bridge
G - Empty
H - Black from bridge
I - Brown to toggle

If you connect the Green & Red from the bridge to position G (empty) instead of position F you will get a single coil from the bridge pickup. Double-check and make sure you have these wires in the correct position (position F)

The same goes if you take the Green & Red from position B and wire them to the unlabeled pad directly below B - you will get a single coil from the neck pickup.

It's easy enough to solder on the wrong pad while wiring/rewiring the pickups.

oh wow... Thanks pete! I'm going to print this out and check the wiring against this later!!!! MUCH APPRECIATED!!!!!

 

[whitestrat]

GUYS!!!! IT WORKS!!!!! YAY!!!!! Beej was right! It was wired in parallel! And my friend actually did the final wiring to get it to work, and it was the same wiring that Pete demonstrated!

I'm so relieved... *phew!*

 

[greenwizard]

Congrats!
Soundclips?

 

[whitestrat]

Congrats!
Soundclips?

heh... will come soon. I changed the pickups on the 20th from the stock virtual PAFs to PAF Joe on the neck, and Steve's Special on the bridge. This baby RAWKS!!!!

 

[petruccirocks02]

heh... will come soon. I changed the pickups on the 20th from the stock virtual PAFs to PAF Joe on the neck, and Steve's Special on the bridge. This baby RAWKS!!!!

Damn, I definitely wanna hear that! Haha. You gotta play some Petrucci riffs with that baby when you post clips. You put those pickups in the piezo one I sold ya right? You should post pics of it too, I'm curious to see it with the new pickups. Bet it looks good!

-Phil

 

[augustyn]

i am also very interested. i am not sooo happy w/pups in my 20th piezo. and i miss the coiltap middleposition a lot.
is it possible to change wiring to have a middleposition like the JP? with or w/o swapping PUPs?
sorry for hijacking the thread but didnt want to start a new one.

 

[Eilif]

Is that the same PCB used in the ASS piezo guitars?

 

[whitestrat]

Damn, I definitely wanna hear that! Haha. You gotta play some Petrucci riffs with that baby when you post clips. You put those pickups in the piezo one I sold ya right? You should post pics of it too, I'm curious to see it with the new pickups. Bet it looks good!

-Phil

Whahahaha... I'll get to it soon Phil. I'm in the middle of the main budgeting period for my brands here. Lots of stress. The 20th was giving me more grey hairs I didn't need... whahahahaha...

Anyways, I used a black/cream combo for the Steve's Special, and wanted the same for the PAF Joe, but they didn't have it. I put in a full black one for the time being, and once the black/creme one comes in, I'll dump the black one into my JP6, and complete the black/creme look for the 20th!!! Just lots of patience needed.

My local dealer is stupidly slow on custom orders. ...Unless someone here's willing to pick one up for me and mail it over... (please?)

 

[whitestrat]

i am also very interested. i am not sooo happy w/pups in my 20th piezo. and i miss the coiltap middleposition a lot.
is it possible to change wiring to have a middleposition like the JP? with or w/o swapping PUPs?
sorry for hijacking the thread but didnt want to start a new one.

Yes, just change the 3 way switch...

dont' get me wrong. I'm VERY happy with the pups in the 20th. Just that I though all along that one of them was faulty. Hence the change. Only after the change did I realise that it's not the pups... Someone probably had too much coffee at the factory when they wired this one up... whahahaha...

 

[PeteDuBaldo]

Is that the same PCB used in the ASS piezo guitars?

Yes it is, good eyes!

For the rest of you, if you look closely at the bottom left corner of the board in the second picture it is labeled...