PDF 24 page service notes:
Boss-dd-7-service-notes_2008.pdf

Complete 5 page Services Notes in PDF: Boss-AC-2-Acoustic-Simulator-Service-Manual.pdf

boss-ac2-acousticsimulator2.jpg

Full service notes in hi-res PDF (14 pages): Boss-PW-10-V-Wah-Service-Manual.pdf

Boss-PW-10-V-Wah-cover.jpg
Boss-PW-10-V-Wah-Schematic.jpg Boss-PW-10-V-Wah-exploded.jpg

I found no thread on the Colorsound Wow Swell, in the video below just referred to as Colorsound Wah. Nor is there a thread on the Solasound Wow Swell, which is, if I'm not mistaken, an earlier, internally different circuit with some deviations in the circuit.

Luckily AG traced the circuit, but from a pink unit?

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titukqov7yrf7zblqbye.jpg uzfyvwxsulrvegserj9y.jpg rrjev3aue9fwmd55pdpo.jpg rc6kbqzbehlkynpprzt8.jpg titukqov7yrf7zblqbye.jpg...

I'm curious about the Lyndhurst. Anyone?
Pic's aren't mine, found them here , nothing else on the internets.
Some controls appear unused on the mainboard. Dark / Flat mode and Release potentiometer.

Hi!

Just got this unit in as it didn't function anymore. Turned out to be a faulty diode.
The unit runs on a 15V power supply that is center positive.

PIcs:
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And the schematic:
Eden - Astroflange.JPG

Hi all,

My MXR Delay System 2 stopped doing what it should do - the signal still passes, but no delay is added.
The previous owner had it services by Charlie Chander. Capacitors and memory chips were replaced, this must have been around 8 years ago.

When I switch it on, delay shows around 2800ms, or around 1400 when I remove th extra memory module. No matter how I twist the knobs, it always stays around that same range.
I tried replacing the memory modules today, but no change whatsoever....

I have completed a new project for this wonderful community. Riptide is a real spring reverb utilizing a blue Accutronics tank. The circuit is actually rather straightforward, but I haven't seen any fully documented DIY projects for one, so I figured I would make one. The decay time is something in the 2.3-2.4 second ballpark, if I remember correctly. The tank is cheaper than a brick or an FV-1 and you can do things like tank splash if you want to. You won't get the massive splashy sounds of a...

PDF: Practical-Electronics-1967-06 Vibrato.pdf

Practical-Electronics-1967-06 Vibrato 01.jpg Practical-Electronics-1967-06 Vibrato 02.jpg Practical-Electronics-1967-06 Vibrato 03.jpg Practical-Electronics-1967-06 Vibrato 04.jpg

dudes......
wire the input and output of the board to the input and output jacks.break the connection at the c17 r8 node. add a spdt switch.
BOOM!
d'lay suddenly has tails. the thing has enough buffers in it so switching that one connection works mint.
try it and tell me what ya think.
sounds great like this. extra added bonus it's always a buffer on for the end of your chain. couple wiring mods. done.
PjP

Everyday-Electronics-1978-09 Tone Booster.pdf

Everyday-Electronics-1978-09 Tone Booster 01.jpg Everyday-Electronics-1978-09 Tone Booster 02.jpg Everyday-Electronics-1978-09 Tone Booster 03.jpg Everyday-Electronics-1978-09 Tone Booster 04.jpg Everyday-Electronics-1978-09 Tone Booster 05.jpg Everyday-Electronics-1978-09 Tone Booster 06.jpg

PDF: EPE-1993-03 Microphone compressor.pdf

EPE-1993-03 Microphone compressor 01.jpg EPE-1993-03 Microphone compressor 02.jpg EPE-1993-03 Microphone compressor 03.jpg EPE-1993-03 Microphone compressor 04.jpg

PDF : Everyday Electronics 08 1979 9V supply.pdf

Everyday Electronics 08 1979 9V supply 01.jpg Everyday Electronics 08 1979 9V supply 02.jpg Everyday Electronics 08 1979 9V supply 03.jpg

Just noticed a 'do it all' pedal called the Baatsin that has a rotary switch, supposedly pre-configured for 8 different overdrive sounds.
Supposedly:
T.OD: Timmy OD,
Sweety: Sweet Honey,
B.Boost: BB Preamp,
T808: Tube Screamer,
Overdrive 1: Nobles ODR-1,
Crunchy JCM? AC30?
Rioter: Riot
O.C.Drive: OCD

I say 'supposedly' cause it seems unlikely that such different topologies could be covered by a single rotary switch. And of course a single tone control won't cover the multiple...

Full PDF: Practical-Electronics-1970-07 Waa Waa.pdf

Practical-Electronics-1970-07 Waa Waa 02.jpg Practical-Electronics-1970-07 Waa Waa 03.jpg Practical-Electronics-1970-07 Waa Waa 04.jpg

I have just finished up another project for the DIY community that I am calling the Spare Room. It is based on valvewizard's Equinox II reverb, but with a few notable changes. The first is that I take the output of the first delay stage, low pass filter it, and feed that into the input of the second delay stage to create an additional delay stage to help thicken the reverb a little. The second thing I did was address the metallic ringing effect that it has. I did this by introducing an LFO on...

Traced this Kay Effector PCB layout from Google. Sorry it's a bit cramped.

I believe the op-amp is an MC1458, there is an unknown transistor in the LFO section that the PCB layout labels K9. I assume it's a PNP BJT just I can't say for certain. The speed pot is an unknown value though I assume it's similar to the one found in a Vox repeat percussion. Volume and tone values are also unknown, as well as the placement of the tone pot in the circuit though I assume it's on the volume pot input....

Complete article in PDF: Radio Elettronica 1979_09 Fuzz preampli.pdf

Radio Elettronica 1979_09 Fuzz preampli 01.jpg
Radio Elettronica 1979_09 Fuzz preampli 02.jpg
Radio Elettronica 1979_09 Fuzz preampli 4.jpg
Radio Elettronica 1979_09 Fuzz preampli 3.jpg
Radio Elettronica 1979_09 Fuzz preampli 5.jpg

I have been given a Boss NS 2 Noise Suppressor which is damaged, 4 wires are not connected to their respective tags on the jack's. Is this correct

Green from 6 on the PCB to Send jack

White from 2: to Output jack

Red and black to 9v Battery connector

This is another cheap Plexitone clone like the Mosky Plexi-m and the Caline English Man.
I'd say this is the best of the bunch, IMHO.

There are two interesting things with this pedal:
1. The PCB says CP-14 Caline CP14 v2.1 2018/11/12 .
2. To generate the -9V from a 9V supply, it uses an XLSEMI XL6008E1 instead of the usual 7660 or 1044.
I haven't seen one of these in pedals before.
Note the inductor in the photos. This thing's oscillator frequency is 400kHz.

Since the components are SMD, I...

Trace of a 'Stax Master' designed by Lee Anderton & Sean Michael. The printing on the enclosure suggests that it's painted by Tayda or a company which uses the same printing method.

Op-amps are SMD 4558s. Whole board is SMD actually so I couldn't get capacitor values for everything.

The TS side is pretty boring but the BB side is cool if not a little dark.
White side is first in the chain, and is followed by the Black side.

Overall it's extremely average in all regards.

PDF: HP1665_02-1981 Frequency Doubler.pdf

HP1665_02-1981 Frequency Doubler.jpg
Translation published in; Haut-Parleur, 1981

PDF: Practical-Electronics-1965-09 Tube Tape Echo.pdf

Practical-Electronics-1965-09 Tube Tape Echo 01.jpg Practical-Electronics-1965-09 Tube Tape Echo 02.jpg Practical-Electronics-1965-09 Tube Tape Echo 03.jpg Practical-Electronics-1965-09 Tube Tape Echo 04.jpg Practical-Electronics-1965-09 Tube Tape Echo 05.jpg

Full project in PDF: RC-1971-12 Vibratron Vibrato Unit.pdf

RC-1971-12 Vibratron Vibrato Unit 01.jpg RC-1971-12 Vibratron Vibrato Unit 02.jpg RC-1971-12 Vibratron Vibrato Unit 03.jpg RC-1971-12 Vibratron Vibrato Unit 04.jpg

Complete PDF for this project
Guitar: Practical-Electronics-1965-01 electronic guitar part 1.pdf
Amplifier: Practical-Electronics-1965-02 Electronic Guitar Part 2.pdf

Practical-Electronics-1965-02 Electronic Guitar Part 2 01.jpg Practical-Electronics-1965-02 Electronic Guitar Part 2 02.jpg Practical-Electronics-1965-02 Electronic Guitar Part 2 03.jpg Practical-Electronics-1965-02 Electronic Guitar Part 2 04.jpg Practical-Electronics-1965-02 Electronic Guitar Part 2 05.jpg