Page and personal memo about electronic music, vintage music electronics, DiY, repairs and midi stuff.
If you are here for Synthesizer and Studio electronics repairs and servicing please refer to the Synthesizer and Vintage Studio Electronics Repair Service Page.
This main page reflects the most recent updates to this site, all projects can be found on their individual pages.
Newly fixed:(16 April 2013)
Sequential Circuits Prophet VS
SCI Prophet VS Frontpanel
A new dj mix by Obsoletetechnology: (30 March 2013)
A mix with some great techno tracks, some old, some new, all purely vinyl!
You’ll find some Delsin, Force Tracks, SähkoPuu, Planet E, Tresor, Morphine Records, Mathematics Recordings etc.
Enjoy!
Here some of the tracks/ep’s used in this set:
J.S.Seitzer – Elliptic
S_W_Z_K – Variant & Empires
Paperclip People – 4 my Peeps
Morphosis – The Tepco Report
XDB & Kassem Mosse – Ekatem/Omish
Adam X – Navigational Shortcut
Kenny Larkin – You are Dark
Martin Buttrich – Stoned Autopilot
Andreas Gehm – What’s on your mind
Anthony Naples – Moscato
Freestyle Man – Port Arthur EP
SCSI 9 – Digital Russian
Conforce – Escapism
Ital
Added 2 more repairs: (25 March 2013)
Power Supply with new Fan
Roland VP330 Vocoder Compressor circuit
VP330 Frontpanel
New EP released on Gotwax!
The second gotwax! EP is a slamming longsided club two-tracker with detroit- and dub-flavoured raw-body-music. The future as it used to be!
Gotwax! 002 – Obosoletetechnology
Sleeve Front
Preview Tracks:
New repair added for a Yamaha CS5 Synthesizer (11/11/2012)
Yamaha C5 Frontpanel #2
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Lately repaired: (11/05/2012)
VCF-VCA replacement due on two voices.
Roland Juno-106
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New project added: (07/01/2012)
This Midi to Trigger interface generates a TTL (5V) trigger signal per note over a range of ten notes. It can be used for example as a midi interface for vintage drum-expanders or as a multiple-trigger generator for a modular synthesizer.
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New project added: (04/01/2012)
Tama TS305 Midi Trigger Modification
The Tama TS305 drum-expander, which is a great sounding machine but unfortunately totally lacking of midi control.
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Newly fixed: (19 nov/2011)
TR-808 Handclap circuit repair/BA662 replacement
TR-808 needing repair.
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TR-606 power supply repair and switch replacement.
TR-606: Repair done.
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New project added:(01 nov/2011)
DC-DC converter based bipolar power supply for effect units and portable devices.
Some circuits require a bipolar power supply. In a portable unit like an effect pedal, that can sometimes be troublesome, since it is likely that we want to power our effects with a standard 9V or 12V wall-wart or batteries and don’t like the idea of putting an AC mains transformer plus rectifiers and filtering into our boxes. That’s where a Dc-Dc converter based circuit can be an alternative:
DC-DC converter based bipolar power supply
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Project Updated: (01/10/2011)
New firmware version for the Midi-CV/Gate converter. The new firmware allows CC Controller assignement and individual CC Midi channel selection.
Midi CV/Gate converter
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Lately repaired:
Another TR-909 for repair on the Bench. This is actually the 4th TR-909 I am repairing!
It came with a problem on the bass drum ‘Attack’ parameter, turning the knob wouldn’t do anything. I thought this would be an easy one and a good cleaning of the potentiometer would cure the problem but not so…
TR-909 Inside
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