Red Witch Seven Sisters Ruby Fuzz Guts & Some Values

General documentation, gut shot, schematic links, ongoing circuit tracing, deep thoughts ... all about boutique stompboxes.
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pk1802
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Post by pk1802 »

Hello Ladies and Gentlemen,

First time I've done this. I've benefited so much from the community here, so I decided to pop open a pedal that I haven't see here before. Hopefully someone will find this info interesting and useful. I don't know if I will get around to actually tracing this one(especially not if someone immediately recognizes the circuit), the parts are SMD, and while I am comfortable soldering SMD, I am not comfortable desoldering SMD. Thus, the unmarked caps will remain without values. I can measure them in circuit if you guys want, but my multi-meter is reliably-unreliable when it comes to testing caps.

I'm going to leave this pedal open until May 17, 2013, so anyone who has questions can get answers without me having to open the box again.

Below will be some pictures, and following in my next post will be the values I have.

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pk1802
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Post by pk1802 »

There are some components that are not numbered on the Silkscreen, so I have inserted them into the gaps in component numbering. These components are designated with an *.

If anyone has any tips about measuring the SMD trimpots, or the film caps, let me know.

Switch Daughter Board:
R1 - 1R0
R2 - 551
R3 - 551
R4 - 103
R5 - 1741
R6 - 472

C1 - 47uF 16v
C2* - Unnumbered Film Cap

Q1 - 1Bt 12

U1 - 8CBD
U2* - Unnumbered unmarked Diode
U3 - LCLG 045L or LCL6 045L?



Main Board:
R7 - 155
R8 - 102
R9 - 682
R10 - 101
R11 - 102
R12 - Trimpot - ?value
R13 - 471
R14 - I couldn't find it. It's not under the pots, but it could be hiding under the jacks.
R15 - 103
R16 - 181
R17 - Hiding somewhere
R18 - Trimpot - ?value
Vol - 104A
Fuzz - 104A
My thoughts on the missing R's: They could be the Fuzz and Volume pots(I can't see the silkscreen for the F&V pots because it's under the jacks.), or they could be hiding.

C3 - ? film cap
C4 - 10uf 25v
C5 - 10uf 25v
C6 - 2.2uf 50v
C7 - ? film cap
C8 - ? film cap
C9 - 1uf 50v
C10* - Unnumbered electro 1000uf 16v

Q2 - 15 n or 1S n
Q3 - 6Z or Z9
Q4 - 11A 5 or 11A S
Q5 - 15 n or 1S n
The markings on the transistors are teeny, so those are my best guesses.

D2,3 - Red/Green 3mm indicator led
D4 - Red 3mm indicator led
D5 - LT0228 B340A
D6 - LT0228 B340A
D7 - unmarked looks like 1n34a type diode

U2 - Max1044csa

Battery - ICP463446GL

Ask yer questions and I'll get back to you later tonight or tomorrow morning.

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Schoppo
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Post by Schoppo »

Hello pk1802,
sorry for opening this old Thread, but i justexplored it some weeks ago and ordered one Ruby fuzz these days which is now arrived.
Did you come further? I will see if i can do some tracing these days.
regards,
Markus

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