Got one in for repairs. Turned out the solder was dry and loose so there was no connection.

Schematic:
Line 6 - EX1.jpg

Hello,

I am a longtime lurker first time poster. I have a question concerning a Maxon 808 OD pedal. I am an amateur tinkerer, and have fixed several of my own pedals over the years, and I decided to try to install a 3PDT true bypass switch. I was able to glean a lot from the following thread:

My thanks to smanq for the schematics and knowledge imparted.

I successfully removed Q1, Q2, R17, R18, R19, D3, D4 & TR3, as well as linking the source and drain on Q1 with a small jumper wire.

I...

Said to be Boss BD-2 Blues Driver copy, I got both and say they sound different. Behringer is all about mid, while Boss has that treble boost it is known for. Below are complete photos of both sides of PCB, the IC is 4558 (not marked as Behringer's made Cool Audio ones).

Boss BD-2 schematic

IMG_0318.jpg IMG_0320.jpg IMG_0321.jpg IMG_0322.jpg IMG_0323.jpg IMG_0328.jpg IMG_0326.jpg IMG_0327.jpg

The markings on backside should be visible, as for front T2 reads K184 GR 5 E, T1 looks same and...

Got this as payment for modding a pedal. It sounds really good, and it doesn't seem to mess with the bypassed signal much at all (if any). Stereo in and out is nice to have. The modulated reverb setting is very usable.

I believe this uses the same PCB as the FX100.

It's got a CoolAudio V1000 at the core, which is a clone of the Wavefront/Alessis AL3102. The controller is Atmel Atmega8. There are also two TL064 and one 4558 op amps on board. And a few other ICs I don't recognize.

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I just came across these Behringer Fx600 multifx pedals for £23.50 and wondered if anyone knows what dsp is inside them. Looking at the controls and stuff it looks possibly like it could be an FV-1 based fx. Amazingly cheap.

Have any of you came across any gut shots of this pedal ?

Hi Gents,

I hope this is the correct sub-forum? As I am pretty new to this site. My name is Ebethron. 36 years young and living in Canada. Born and raised in Amsterdam and moved to Ontario in 2010 due to the wife. Enough about me!

Back to the reason why I am posting here is because a buddy of mine gave me a pedal that I have some questions about. He handed it to me to check out the foot stomp switch since it is not working properly. He said besides this it works fine. He might offer to sell...

guts!

noise gate Joyoy
RC4558 and 2N5952.
possibly a clone mxr

....

Is anyone interested in some gut shots of this pedal?
I got one and im about to sell it but I will post pics before I do.

Hey,

does anyone have Double Trouble pedal ? I need to know what T301 transistor is ? Somebody tried to repair my DT and changed this transistor to sk118 type but i'm not sure if it is original or some kind of substitute. I'm pretty sure that it's N channel JFET with about 5V Vgoff with D-G-S pinout which is pretty strange.

Your help would be very aprreciated.
Mateusz

Have replaced two of the three pots in the eq section and still get no affect by the three eq pots. The gain and out out work but that's it, any suggestions on what might be wrong?

Thanks

soooo cute and tiny.. makes all my 1590a pedals look like whales.

prolly zero chance of anyone tracing it, but I've take gutshots to show the majesty of the engineering.

review? well initially I hooked up an external battery (Specs say it only draws 37mv so should have been sweet) but in retrospect it may have been a lil undervoltage (bit dead)... so when I started it off I heard my guitar but as soon as I engaged it all I got was a click noise then it repeated that constantly. de-powered it...

Japanese multiple effect from Maruei Electric Co LTD, Ken Multi (Aria) Effects 5.

Got one in for some repairs. No schematics are listed on the Morley site

Website

The unit switches LED's on and off making the WAH or the Volume work. The threadle moves a light shield up and down between the LED's / LDR. L1/L2 lights LDR1/LDR2; L3 lights LDR3; L4 is the indicator LED

MVW.JPG

Time Space Echo Delay, look:

Here's another DOD factory schem and BOM. This one really is a fantastic flanger if you like the big jet engine style flange sounds.

Hi, just scored one of these wee beasties off eBay for a very reasonable £16.89. I have a couple of the Alu series (Phase 2 and Flanger, both of which I really like) and having repaired the Alu Chorus for a friend (which I also liked) I thought it was worth a punt.
It has a nice, lush, vintage tone and contains an SAD512, unlike the 1024 of the Alu Chorus. It's housed in the same plastic enclosure which their amp footswitches came with, back in the 80s. Unusually, the controls are on the sides...

Got one of these in for repairs, pots are so broken I can barely measure their resistance..
The 5-terminal pot is crazy worn down. But I'm guessing finding a replacement will be very difficult.
Anyone have ideas?

Some stuff is missing from the schematic, might fill in some blanks later on. But you'll get the jist of it.
Interesting design, I really like 4049 drives and this one sound ok for what it is.

Schematic attached as pdf.
Cheers!

The schematic of a popular rack ac filter and surge protection:

This currently discontinued pedal sounds good... really good (for a metal distortion anyway)...and I'm trying to figure out what it's based on. No gain knob, it's always turned up to 11, it has a 3 band EQ and a mixer out with cabinet emulation. The dirt/response has a very rectified sound with some fuzz around the edges, vaguely reminiscent of the DOD FX69/FX86. Four JRC 4580 IC's and a ton of cans but it predates the Suhr Riot. I'm guessing it's an amalgamation of two or more existing...

I got one of the Way Huge Swollen Pickle MKii reissues recently. I like it, but I feel that it has far too much bass and could also use a bit more gain. Does anyone know what mods could be done to remedy these things? Any recommendations?