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Guys, I bought an Electro-Harmonix Qtron+ pedal. It's broken. Paid a couple of euros for it.
It sounds thin and lacks power to the signal. When engaged, there is a signal but it's very little coloured by the effect. The response is also weakened.

The former owner said that the adapter broke down too. This could be a clue...

I would love to be able to repair it!
Anyone ideas?

Guys, I ran into these memory chips: KM41256AJ-15 - 256K X 1 Bit Dynamic RAM with Page / Nibble Mode - semiconductor

Anyone knows what they are? Are used in any pedal and are they worth anything?

I love the Uproar. Is there a Shiba drive pcb out there?
G♫S

Free for limited time. Happy New Year

https://itunes.apple.com/us/app/etools-legacy/id518432254?mt=8

It's a version of eTools for iOS before iOS5.0 with a little simple interface and full fuctional. (If You have iOS5.0+ look at eTools)
eTools Legacy is a powerful virtual toolbox which combines a lot of useful reference materials with electronics tools (calculations, conversations, coding/decoding, etc) in one application in your iOS family devices. Professional or hobbyst can easy recive most of necessary informations or calculation results at some simple finger touches.

Calculations
Resistor Color Code.
Chip-resistors (smd) decoding (3 digits, 4 digits, EIA-96).
Axial inductors colors decoding.
Capacitors decoding.
Solenoid Calculator.
Power Calculator.
Ohm's Law.
Reactance (XC for capacitance and XL for inductance).
Resistors voltage divider, ideal and with load. Variable resistor emulation. ("E24 rounded" integrated).
Parallel resistors ("E24 rounded" integrated).
Capacitor charging calc.
LC-resonance.
Resistor for LED(s) (with most popular presets).
Operational amplifiers: non-inverted and inverted ("E24 rounded" integrated).
Compute LM317 with variable resistor emulator ("E24 rounded" integrated) voltage & current mode.
Compute 555-timer: astable mode with ratio 50%-100% and astable mode with ratio 0-100%
Wire voltage drop calculator.
Frequency converter.
DAC/ADC converter.
Decibels converter.
Bin↔Oct↔Dec↔Hex converter.
Pinouts
USB 1.x/2.0 & USB 3.0 pinouts and specifications.
FireWire 4, 6, 9-pins.
RS232 (DB9 & DB25 & IDC).
Parallel (LPT port) / Centronics.
Ethernet (RJ-45) direct & crossover connections.
Parallel ATA (PATA/EIDE interface).
Serial ATA (SATA/eSATA).
AT-keyboard & PS-2 keyboard/mouse.
AT-power.
ATX-power (20/24-pins) & auxilary connectors.
Molex & fan connectors.
SATA power.
SCART.
DVI.
HDMI.
DisplayPort & MiniDisplayPort.
VGA (standart & VESA modes).
S-Video.
RCA (with typical color marking).
Professional Jack (6.3mm) & MiniJack (3.5mm) - 2, 3, 4 poles.
XLR/Cannon (3, 5-pins).
Speakon.
PS-x AV multiout.
xBox360 AV.
iPod 30pin connector
EMU (Enhanced mini-USB)
OBDII
References
SI system.
Symbols & abbreviations.
Electrical conductivity.
AWG & SWG wires.
Maximum current for copper assembly wires.
ASCII codes.
Basic logic gates.
7400 family (while only a list of family with functions and decoding).
78xx/79xx family (basic data, scheme, packages).
Interactive 7-segment display.
Bipolar transistors (nearly 50000 pcs) catalog & select.
FETS (JFET & MOSFET) (nearly 5000 pcs) catalog & select.
IGBT transistors (nearly 1000 pcs) catalog & select.
Ferrite materials.
E(EE)
EI
EQ/ER/ETD
R (torroid)

Does anyone know where I can sub a 1n34a diode with? I ran out of them  

Let me know!
Thanks.

G♫S

Mystery solved: 1N60

Hi electromagicians!

I want to build these pedals but the partslist is not clear about what type of cap to use.
Could someone specify (film, ceramic, silver mica, elco or tantalum)?
http://madbeanpedals.com/projects/Glitterrattii/docs/Glitterrattii.pdf

It's better specified here, but still not specified per part:
http://madbeanpedals.com/projects/Serendipity/docs/Serendipity_ver.5.pdf

Thanks!

♫Regards,
Gijs