Thursday, August 18, 2011

Rehousing a FAB Chorus Pedal - Phase 3

This is the third installment in my "how to burn yourself with a soldering iron for no good reason" series.  Just to review, here are links to Phase 1 and Phase 2.  Now I am no electronics expert, and I'm not great at soldering, which is probably why I put off actually doing this part of the project for so long.  A great resource that I discovered that helped me out a lot was, especially the tech pages section.  So kudos to that guy and his way better blog.  But back to my mess...

Step 1 - Remove Stuff

The first thing I did was remove the battery clip.  I never intend to run it on battery power, and I don't have room for one in the housing I made, so bye-bye.  Also removed the craptacular momentary switch that worked the original pedal.  I left the wires attached to the board to use for the new switch.

Step 2 - Remove More Stuff, Ridicule Plastic Jacks

I bought a solder sucker to remove the huge wads of solder that were holding the input jacks to the board.  They really are terrible.  After looking at them I couldn't believe they actually work.  Thats probably why all the parts I bought cost as much as the actual pedal.

Step 3 - Add Respectable Footswitch

Use a momentary switch.  I'm not sure what a latching switch would do if you used one.  But whatever makes the pedal stay on after you hit the switch is in the electronics, not in the switch itself.

Step 4 - Time Warp and Swearing at Inanimate Objects

You get the idea.  I soldered leads to the new jacks, foot switch and power supply jack, and then soldered everything to the board in what I believe to be the correct places.  I think the soldering iron I used was from the 60's.  That's not an excuse for anything, it's just a fun fact.

Step 5 - Close Up of the Guts

Orange, green and white are the input jack.  Yellow and purple are the output jack.  Red and black are the power supply jack.  Foot switch is soldered to the old leads on the other side of the board.

That's about all for now.  Tomorrow I'll cram everything into the housing and see if it burns my house down when I turn it on.  My one concern at this point is the plastic case - the effect might be noisy since there is no metal shielding the electronics.  I'll also make a list of links to the places where I got all my hardware for this little project.  Until then, have fun.


  1. Could you please tell me, orange and yellow are ground?

    1. I'm not really sure exactly what is what. All I did was replicate the old wiring with new wires. If you haven't de-soldered everything yet you should be able to figure out what is common. I'll see if I can dig up a wiring diagram...

  2. Did you use mono or stereo jacks?