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Freakshow Effects Boost Schematic tracing?

PostPosted: 25 May 2019, 06:14
by jaredcohen
Hey guys. My cousin gave me his broken Freakshow Boost and asked me to fix it. I can't find a schematic anywhere, and I don't really know how to trace a PCB. It only has a handful of components. Just wondering if anyone would be willing to trace it for me? You'd need photos of both sides of the board, right? As a perk, others will be able to build it, since I think Freakshow stopped building. My cousin said it was the best sounding boost he'd ever played before it bit the dust.

Re: Freakshow Effects Boost Schematic tracing?

PostPosted: 25 May 2019, 09:48
by roseblood11
Photos of both sides of the pcb. Maybe some shots against a bright light, so that you can see the connections through the board. And you should write the parts list, as it's hard to read the values and colour codes from photos.
If you're in bright daylight, a smartphone camera is a very good tool for close-up photos

Re: Freakshow Effects Boost Schematic tracing?

PostPosted: 29 May 2019, 22:41
by jaredcohen
Here are some pics. I took a bunch of angles since it's hard to see around the switch.

IMG_2003.JPG
IMG_2002.JPG
IMG_2004.JPG
IMG_2005.JPG
IMG_2006.JPG

Re: Freakshow Effects Boost Schematic tracing?

PostPosted: 29 May 2019, 23:12
by dv8r601
boost side of this(left hand side) looks mighty similar
http://freestompboxes.org/viewtopic.php?f=73&t=28706

Re: Freakshow Effects Boost Schematic tracing?

PostPosted: 30 May 2019, 06:42
by tip142
Hi i see a suspicius resistor on the left side near a green capacitor....

Re: Freakshow Effects Boost Schematic tracing?

PostPosted: 30 May 2019, 15:39
by karul
this one. it seems that it's value is 4.7k *yellow - violet - black - brown - brown).

Re: Freakshow Effects Boost Schematic tracing?

PostPosted: 30 May 2019, 22:29
by Nocentelli
Something like this?
boostschem.bmp

Re: Freakshow Effects Boost Schematic tracing?

PostPosted: 31 May 2019, 04:15
by jaredcohen
Nocentelli wrote:Something like this?


Thank you for drawing this up! I didn't want to ignore your post but I've got a busy few days coming up. Hopefully I'll have a chance to look at this in depth over the weekend.

[EDIT]: Oh, so it's an LPB-1... :-)

Re: Freakshow Effects Boost Schematic tracing?

PostPosted: 31 May 2019, 04:43
by Manfred
Oh, so it's an LPB-1... :-)


Rather, like this circuit pattern:
muffmaster.gif

Re: Freakshow Effects Boost Schematic tracing?

PostPosted: 31 May 2019, 05:39
by jaredcohen
Ah good catch. It looks like the difference from an LPB-1 is the 511k resistor (in this case) going to the collector, versus to V+. It's amazing how many pedals are Jack Orman's circuits with a few value swaps.