Ibanez - Mini Tube Screamer  [schematic]

All about modern commercial stompbox circuits from Electro Harmonix over MXR, Boss and Ibanez into the nineties.
Post Reply
User avatar
apollomusicservice
Resistor Ronker
Information
Posts: 339
Joined: 04 Jun 2012, 11:54
Has thanked: 64 times
Been thanked: 814 times
Contact:

Post by apollomusicservice »

MINI Tube Screamer guts & schematic
Attachments
MINI Tube Screamer.png
01.jpg
02.jpg
03.jpg

User avatar
sinner
Old Solderhand
Information
Posts: 4713
Joined: 06 Nov 2008, 17:16
Location: ...no more
Has thanked: 1031 times
Been thanked: 907 times

Post by sinner »

Cute pedal

Big thanks for one more contribution

User avatar
apollomusicservice
Resistor Ronker
Information
Posts: 339
Joined: 04 Jun 2012, 11:54
Has thanked: 64 times
Been thanked: 814 times
Contact:

Post by apollomusicservice »

Here is my version of this Screamer designed for SMD technology. Pots and switch are on the other side of Pcb, DC jack and input/output jacks are mounted directly on 1590A housing.
Attachments
Mini TS SMD.pdf
(30.04 KiB) Downloaded 322 times
Mini TS SMD.jpg

User avatar
Ixide
Information
Posts: 2
Joined: 15 Jan 2012, 04:49
Been thanked: 1 time

Post by Ixide »

I think the resistor values R10 and R11 must be swapped (R10=1k, R11=220). You can once again verify the original TS MINI?

User avatar
apollomusicservice
Resistor Ronker
Information
Posts: 339
Joined: 04 Jun 2012, 11:54
Has thanked: 64 times
Been thanked: 814 times
Contact:

Post by apollomusicservice »

Ixide wrote:I think the resistor values R10 and R11 must be swapped (R10=1k, R11=220). You can once again verify the original TS MINI?
I don't think so.
Attachments
10.jpg
10.jpg (30.41 KiB) Viewed 6014 times

User avatar
Ixide
Information
Posts: 2
Joined: 15 Jan 2012, 04:49
Been thanked: 1 time

Post by Ixide »

Thanks for the answer.
Strange that the developers have swapped value resistors. Here for example the old original scheme.
See R108 = 220 (for tone) and R111=1k
Image

User avatar
Dirk_Hendrik
Old Solderhand
Information
Posts: 4153
Joined: 03 Jul 2007, 08:44
Location: Old Amsterdam
Has thanked: 216 times
Been thanked: 855 times
Contact:

Post by Dirk_Hendrik »

This is a thread I missed completely. Thanks Apollo! Also thanks Ixide for noticing this error. Makes one wonder if someone made a f-up with the BOM.
Sorry. Plain out of planes.

http://www.dirk-hendrik.com

User avatar
Ice-9
Transistor Tuner
Information
Posts: 1084
Joined: 31 Mar 2009, 15:29
my favorite amplifier: Marshall
Completed builds: Far to many to afford the enclosures for them all. :)
Has thanked: 134 times
Been thanked: 359 times
Contact:

Post by Ice-9 »

Dirk_Hendrik wrote:This is a thread I missed completely. Thanks Apollo! Also thanks Ixide for noticing this error. Makes one wonder if someone made a f-up with the BOM.
or the pick and place machine had the wrong reel loaded that day.
It's fairly straight forward, if you want to start it , press start. You can work out the rest of the controls for yourself !

No silicon heaven ? preposterous ! Where would all the calculators go ?

User avatar
Dirk_Hendrik
Old Solderhand
Information
Posts: 4153
Joined: 03 Jul 2007, 08:44
Location: Old Amsterdam
Has thanked: 216 times
Been thanked: 855 times
Contact:

Post by Dirk_Hendrik »

true
Sorry. Plain out of planes.

http://www.dirk-hendrik.com

User avatar
lespaulgoth
Information
Posts: 4
Joined: 09 Jan 2018, 21:16
Has thanked: 2 times

Post by lespaulgoth »

Hi everyone, maybe somebody knows where i can find a tone knob replacement for the tube screamer mini?

thanks very much

User avatar
phatt
Transistor Tuner
Information
Posts: 1206
Joined: 04 Aug 2010, 05:17
Location: Morayfield SE Qld AU
Has thanked: 8 times
Been thanked: 329 times

Post by phatt »

I think you will find there is no Knob as such, the shaft is the knob. So if it's broken/damgaed then you will have to replace the whole pot.
Phil.

User avatar
lespaulgoth
Information
Posts: 4
Joined: 09 Jan 2018, 21:16
Has thanked: 2 times

Post by lespaulgoth »

phatt wrote:I think you will find there is no Knob as such, the shaft is the knob. So if it's broken/damgaed then you will have to replace the whole pot.
Phil.
hi Phil thank you very much for your response. Any place where i cand find that exact pot? in the piece it says GC203W and it has the brand ALPS on it. I did try to google it and search for it in the alps web but didn´t have any luck.

thank you

User avatar
lespaulgoth
Information
Posts: 4
Joined: 09 Jan 2018, 21:16
Has thanked: 2 times

Post by lespaulgoth »

Any one knows something about it?

thanks

User avatar
drewl
Breadboard Brother
Information
Posts: 115
Joined: 11 Feb 2010, 14:56
Has thanked: 1 time
Been thanked: 10 times

Post by drewl »

It's a 20K pot made by Alps.

Check Digi-key or Mouser for mini pots like that, standard PC mount.

User avatar
lespaulgoth
Information
Posts: 4
Joined: 09 Jan 2018, 21:16
Has thanked: 2 times

Post by lespaulgoth »

thank you very much drewl.

User avatar
Sean2e
Information
Posts: 1
Joined: 21 May 2019, 11:39

Post by Sean2e »

Anyone know what the exact diodes are?

Post Reply