This was a pretty straightforward repair. The Juno 106 is one of those synths which tend to always have the same issues. One of the main ones is that the VCF/VCA voice chips, sometimes called voice cards, are very prone to failure. Continue reading “Roland Juno 106”
The Moog Rogue is very, very similar to the Moog MG-1. It has pretty much the same internal design in the synth section, but the designers made some questionable choices about which parameters to allow control of– so unlike the MG-1, both oscillators on the Rogue have to have the same waveform, and be in the same octave. Continue reading “Moog Rogue”
I love these little Radioshack Moogs! I have a MG-1 of my own that I overhauled and heavily modded a while ago, and I’m always happy to bring another into the shop. They are so simple and there are only a couple parts that are hard to find– the sliders, the switches, and the MM5823 frequency divider ICs. This MG-1 was not in too bad shape, and the foam under the panel had mostly been removed already, but had one of the three divider ICs not working.
There was also a slider with a broken wiper, but I couldn’t find any sliders of that type with the right value (10K) anywhere on the internet, so I bought a 2M one from Syntaur, took both apart and swapped out the resistive strips– as I was doing it, I was telling myself, “I am doing a ridiculous thing,” but it worked.
Work done: replaced all electrolytic capacitors, cleaned switches, cleaned and lubricated sliders, replaced MM5823 IC, replaced one bad slider, added 1/4″ output jack