The Gig flanger looks very similar to the Washburn A-F4 flanger. I bought this one new around '85. The flanger was rather weak sounding but didn't really know any better when I bought it. A while later I noticed that the manufacturer was using the mechanical connection between the pots and the box as a ground path and identified this as a weak link. Running a separate ground to the pots made the controls actually work. I will dig up the gut shots I have as well as the little instruction manual...

Thanks!

and: hello!

And therefore:

80's gig flanger, another brand of locobox/cutec etc.
what's it a clone of?

For no particular reason, here are the guts and the overlay...
Let me know if you want more.

Front:

Back (Already mirror imaged to match the front):

Overlay:

The Request Topic I made for this where Steven Posted his gut shots has gone... it didn't conform to the schematic around as it used a single Quad Op-Amp instead of 2 Duals and had less diodes, might have had a few other differences too.

Anyway, I just made this Draft PCB for it... I can't work out what's going on in and around the trimmer though and there's a few questionable spots anyway, but I thought it was a start atleast to get something going on this pedal.

Overlay & Schematic Redraw...

just for fun...

Just got one in for repair...... cool little pedal that just sounds like only a bassballs can do!!!

Had no topic yet here so I'll open one :)

Let's start with the Topopiccone site which has a lot of info on the schematics and some mods!

My unit had a 27k to ground in the second filter (the 4n7 filter) on the output of the opamp..... it isn't listed on the older schematics but the newer factory schematic I have note it. The 27k was added not on the PCB but is soldered on the backside /...

Well, I traced it. Not that long using the DM-2 schematic as a base for the BBD and compander stuff, and asking for help to Dirk_Hendrik for the :scratch: parts ! :mrgreen:

Anyway, here it is. Feel free to comment any possible mistake, the pedal will stay opened for a little while, so a second look would be easy. (Guts here )

Guyatone - PS-006 - schematic.pdf

Cheers! :D

ps: as per DH remarks:

- poor pre-BBD filtering
- MA522 circuitry is supposed to give LED blinking if power is too...

A weird pedal I got in a couple of years ago to fix; never heard from it and never saw another one again!

Someone ever seen one?????

Outside
Inside 1
Inside 2
Schematic

I already posted it at the workbench; small update!

I have a Boss PQ-3B on my bench right now; want to make it into a guitar parametric EQ instead of the bass version it is now. Could not find any schematics so I tried to trace it.

For most parts the unit is identical to the PQ-4; instead of the low / presence knob the low is made parametric. This is done by adding one more stage (total of 3 stages; low, middle, high). This stages differ from the PQ-4

Stage(s)

High uses 3.3 nF
Middle...

Hi Guys,

I just recently found out about the biyang AC-8 Woody Acoustic simulator.
The name struck a bell as Mark Hammer from DIYStomp designed an acoustic simulator named woody too.
On first glance it seems to be the thing. Same name, same controls and heck even the same font on the pedal for the name Woody . I does appear to be the 9V version.

I just received one from evilbay (marktplaats) and I will reverse it.
As for now here are some guts I found on the net already.

Will report..

see also:
Behringer - UM100 Ultra Metal
Boss - DS1 Distortion

See: Boss - HT2

See: Boss - DS-1

see: Boss - CH1 Chorus

schematic split off from this discussion thread

schematic split off from this discussion thread

schematic split off from this discussion thread

I am looking for the schematic of the Boss Phaser PH-3 . Can anybody help me?

Thanks

i'm dying for on of these but ther's no way i'm paying 135 for one
does anyone who has the schematic wish to share?

I have an older TC Electronics SFC+ (purple stripe model) in which the overload light is constantly lit. The unit works and the issue doesn't seem to effect the sound. I emailed TC and they said I didn't have to fix and could use it as-is without a problem. Just curious if anyone else has seen this or diagnosed this issue? It is around $90+ to send to a TC certified repair center. When AC power is applied the overload light is dark for about 5 seconds and then slowly starts to come on and then...