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DIY Stompboxes => Building your own stompbox => Topic started by: ildar on June 12, 2004, 11:08:39 PM

Title: SD-1 Layout
Post by: ildar on June 12, 2004, 11:08:39 PM
In looking over some old topics, I came across Keeley's SD-1 mod that I'd like to perform on my MIT SD-1. However, when I opened her up, I saw that the caps are not labelled like the diodes and trannies. Since I have to replace a few caps, I need help. Can anyone help me i.d. them?
Title: SD-1 Layout
Post by: sir_modulus on June 12, 2004, 11:20:14 PM
Well... we need some pics of the guts of this pedal. IMO (this is something I think is real useful, as I always have spare caps everywhere) you should consider getting a multimeter with cap reading capabilities. well, anywhoo, post some pics, and I should be able tp help ya.
Title: SD-1 Layout
Post by: ildar on June 12, 2004, 11:25:31 PM
Ok, thanks. I'll post a pic asap.
Title: SD-1 Layout
Post by: ildar on June 13, 2004, 12:10:21 AM
The pic doesn't want to load, so here's the url: http://sweetee1189.topcities.com/sd1.jpg  Paste it into the address bar,  it won't load the page by just clicking.
Sorry about the username of the site, it's my daughter's   :)
Title: SD-1 Layout
Post by: ildar on June 16, 2004, 03:40:32 PM
I guess what I need help with here is identifying C5 and C6. When I said they were not labelled, I meant the board does not have indentifying labels where the caps are, like those for the diodes and transistors.

If anyone can help, please!
Title: SD-1 Layout
Post by: cd on June 16, 2004, 03:45:12 PM
Go by the labelling on the cap itself.  473 = .047uf, 222 = .0022uf, 104 = .1uf, etc.
Title: SD-1 Layout
Post by: ildar on June 16, 2004, 03:53:08 PM
I guess that would work, but if more than one cap with the same value exists, I still don't know which to replace, as Keeley's mod replaces specific caps.
Title: SD-1 Layout
Post by: cd on June 16, 2004, 04:19:11 PM
Quote from: ildarI guess that would work, but if more than one cap with the same value exists, I still don't know which to replace, as Keeley's mod replaces specific caps.

Look at a schematic and locate the exact cap by seeing what else is connected to it (transistor, resistor, pin on op-amp, etc.)
Title: SD-1 Layout
Post by: Blue Mark on June 17, 2004, 01:14:20 AM
(http://acapella.harmony-central.com/forums/attachment.php?s=&postid=7920679)

c5 should be left of c6
Title: SD-1 Layout
Post by: embryo on December 12, 2004, 01:06:31 AM
Hi, I tried the link hoping to find the pcb layout for the SD1 but somehow it show's up as error or something. Can someone please help me? Hey this place is just great and yah I do love my SD1 and I've just discovered that I'm no longer alone. Cheers!

R