If you buy an elka eh105, you have two choices: leave it "broken" for character, or restore it for reliability. Capacitors in 1970s Italian electronics are notorious for going bad. A full recap costs about $150 in parts and 4 hours of soldering.
Warning: Do not open this unit while plugged in. The power supply section can hold a charge that will stop your heart.
The plastic rocker tabs become brittle. Some will snap off. Fix: 3D printing replacements is common. You can also lubricate the pivot points with silicone grease (never WD-40). elka eh105
Because the EH105 uses a single master oscillator, if one note is dead but others work, it is usually a key contact issue. The contacts are metal leaf springs. Over 50 years, they oxidize. Fix: Deoxit spray and a business card dragged through the contact gap.
While the elka eh105 does not have the fame of a Minimoog, it has appeared on several notable recordings in the past decade: If you buy an elka eh105 , you
If you search YouTube for "elka eh105 demo," you will find dozens of videos by ambient artists like Hainbach and Jogging House, who praise the instrument for its "happy accidents."
Warning: Internal components can hold high voltage even when unplugged (mains power supply if internal). If you’re not experienced with electronics, take it to a tech. The plastic rocker tabs become brittle
The drum machine relies on neon bulbs and photocells (or discrete transistor noise generators). These fail. Finding replacement parts is hellish. Most players ignore the rhythm unit or gut it for a DIY effects loop.
The indie rock scene rediscovered the elka eh105 around 2015. The reason is simple: digital synthesizers sound too clean. In an era of pristine plugins, the elka eh105 offers genuine instability. The "Flute" voice, for example, has a breathy, almost dying transistor sound that sits perfectly in a mix without needing EQ.
Producers run the elka eh105 through guitar pedals (fuzz, delay, or a Strymon Deco) to push it into chaotic territory. The limited 37-key range forces melodic creativity.