In this video I will be replacing the original NiCad battery in a Roland Jupiter-4 (JP-4). This kind of battery is prone to leaking which can cause problems. In the JP-4 this is not an very big issue (at least compared to e.g. Korg Polysix where the leaking battery will cause havoc and damage traces…
Soldering the Middle Tom of the E-licktronic Nava Roland TR-909 clone. I discovered that I by mistake had used the wrong type of capacitors in the power supply (but the correct value). Some of these capacitors were needed in the Middle Tom section so I had to desolder and rework the power supply.
I have an older revision of the E-Licktronic Nava, v1.0L, which apparently has an issue with the bass drum. One of the traces on the board has to be cut and bypassed by a flying wire. This problem has been corrected in newer revisions of the board (I am not sure which revision though). See…
This Roland TR-808 had very noisy snare, clap and toms. The toms especially sounded very coarse. It was a bit like when you try to stop your car on a road with gravel. The claps and the snares also sounded a bit tame or muffled. The common denominator between these instruments is the white noise…
I finished the IO board and connected it to the main board and it powered up! Unfortunately the sequencer buttons did not work properly so I could not initalize the EEPROM memory, more about that in a later post. Video and images after the click!
This section was quite small and was quickly assembled without any issues. I am however starting to think that there will be some horrible issues when I finalize the unit. But that is a problem for another day. Video in the post!
Things are coming along nicely, apart from the fact that my arm is now covered with ink from a pen which I forgot to recap while soldering the Cow Bell. Check out the video in the post!
So I moved in July if 2017 and after that I haven’t really done anything with the Yocto unfortunately. I have done some work on restoring a Korg Polysix with various issues, but that will be a separate post. But now I have actually managed to get my thumb out of my ass to finish…
