Roland RS-09 Synthesizer Repair

Today I am going to service a Roland RS-09 having some issues. I'm going to
- address the tactile button actuator assembly
- troubleshooting the dead button panel circuit
- address some metal panel rust
- replace some felt dust filters for fader pots
- deal with the rickety plastic rivet fasteners for the front panel.
Lots of fun stuff.

0:00 Introduction and Symptoms
0:57 Teardown
2:40 Dead Button Diagnosis
4:31 Tests
5:12 Button Actuator Assembly
6:23 New Felt Dust Filters for Slide Pots
7:33 Rivets, Chassis Rust, Final Test

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Roland Juno-106 Synthesizer Troubleshooting/Repair Quiet Voice

Today I'm investigating an issue with a Roland Juno-106. Voice #4 is a lot quieter than the others. And it's not a calibration issue. 99% certain it is NOT the brand new voice chips I put in as seen in a previous video. Troubleshooting will confirm that statement. So what else could it be? Maybe something EVERY 106 owner will want to be pro-active about mitigating?

This video is posted for general information about my experiences. Always observe safety working on electronics, and never tinker around inside power supplies without first unplugging the power cord. De-soldering components on the Juno-106 must be done VERY CAUTIOUSLY to avoid lifting very tiny delicate traces. If you're not sure about anything, there's no shame in taking your instrument to a qualified service technician.

Timestamps
0:00 Intro + Symptoms
0:35 Voice Chip Swap Test
1:06 Looking at the Wave Chip output
1:56 Waveform Chip replacement
2:23 Testing
2:51 Voice Board inspection and Remedy
3:19 Re-testing, did it work?

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