Und hier noch ein paar ausführlichere Reparaturberichte

And here are a few more detailed repair reports
20. Januar 2021

Are your electrolytic capacitors in your synthesizer still healthy ???

4. Januar 2021

Is your battery still healthy ???

24. November 2019

Repair a leaky output or battery of a Roland JP-8000 Synthesizer – Tutorial – Reparatur Service

3. Januar 2019

Tech-Tip: Check it twice, solder once Service

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10. November 2018

TR-909 OS Version 4 Service

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24. Oktober 2018

Roland TR-909 factory reset

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