Repair LinnDrum Vintage Drum Computer Reparatur Service1. Mai 2020
Repair Korg Poly 61 Vintage Analog Synthesizer Reparatur Service9. Mai 2020
Linn Drum, one more time. Two main issues here. Did not boot and did store the memory when switched off.
The main issue on this LinnDrum was that she did not boot. Instead of challaging (again) with the existing power safe circuitry I decided to modify this with a new power up boot ic, which makes it way more stable and it solved the problem. The LinnDrum is now booting like she should.
One issue was quite simple. The battery was empty and dead, leaky and had to be replaced. Original the Linndrum has 3 AA batteries (accu) installed, so maybe 1000-1500 mAh. So I find a 240mAh not the correct installation. That's why I have chosen 3 AA batteries as in the original.
I've chosen 3 AA accu, professional version from Panasonic.
This Linndrum has a nice modification, where you can tune/pitch more instruments than in original versions.
I also did a few more common/usual things, like cleaning, reflow some solder joints.
There are lethal voltage exposed in electronic devices. Unless you know what you are doing, don’t try this. If you following along, you doing so at your own risk.
I’m documenting repairs for my reference and yours.
I do synth restorations and repair with a specialty in vintage synthesizers, drum computer and other vintage gear, based in Düsseldorf, GER. Get in touch about your synth situation!