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Home › Forums › Help/Technical Questions › Green EHX/Sovtek Big Muff Pi True Bypass Help
Hi, I found a disassembled Green Big Muff on Craigslist the other day for $30, needless to say I bought it. Anyway, the guy before me had taken all the wiring out and was going to do the true bypass mod, got frustrated, and decided to sell it. When I picked it up nothing was attached. To get to the point, I believe I have everything connected right (believe being the key word). When I plug it it, it bypasses nicely, but there are some problems when it’s turned on. The fuzz sounds more like a light overdrive, and when I roll the volume back on my guitar it cuts out. To be specific, at 8-10 it sounds like an overdrive, at 5-7 it cuts out and the LED goes very dim, then at 0-4 the LED gets brighter than at 10 with no sound of course. The links below are the pictures of the Muff, I’ve labeled everything so hopefully it’s not too big of a pain to figure out where I screwed up.
http://s1253.photobucket.com/albums/hh584/Crazymatt89/?action=view¤t=BigMuff1.jpg
http://s1253.photobucket.com/albums/hh584/Crazymatt89/?action=view¤t=BigMuff2.jpg
http://s1253.photobucket.com/albums/hh584/Crazymatt89/?action=view¤t=BigMuff3.jpg
Also here are the pictures unlabeled in case I’ve messed up so bad I need to start over:
http://s1253.photobucket.com/albums/hh584/Crazymatt89/?action=view¤t=2012-07-18_12-21-24_404.jpg
http://s1253.photobucket.com/albums/hh584/Crazymatt89/?action=view¤t=2012-07-18_12-21-55_90.jpg
http://s1253.photobucket.com/albums/hh584/Crazymatt89/?action=view¤t=2012-07-18_12-47-35_85.jpg
I would be forever grateful to whomever can help me on this. This is my first mod, and clearly I was in over my head. I’ve already spent 3 days pulling my hair out trying to figure this stuff out.
Also I forgot to mention on the pictures that:
U1, U2, U3 are the unlabeled spots on the PCB
I1 and I2 are the Input Jack wires
V2S is the wire going from the Volume straight to the switch
11 has the LED on it