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| ID | Issue | Fix | date | fixed version |
|---|---|---|---|---|
| 1 | Snare Drum section - | please download v.1.7 build documentation for details. Service advisory: after building the snare you must place a jumper as shown in the pic below, this is shown without parts placed for clarify
bigger picture from me - easier to find the place..
| 17.Dec.2020 | 1.9 build guide |
| 2 | C95/c97 Tom section | swap both against each other | 17 Dec. 2020 | 1.9 buid guide |
| 3 | Psu | if you‘re using the Safety PSU do not connect pin 27 and pin 28 on the F3 cable, otherwise you‘ll create a ground loop. | 17.dec. 2020 | 1.9 build guide |
| 4 | PSU - wrong routing → affects the memory | change the 5.6V zener as shown here:
| 17.Dec. 2020 |
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| 5 | Noise floor - crosstalk | from FB RE-909 group: "Hello! Just wanted to share some good news about noise and crosstalk issues on RE-909. Pictured below is a Roland TR-909 factory mod with a wire that seems to reinforce grounding between C151 styrofoam cap in the hihat low pass filter and the common analog ground track where R236 is also attached. By doing the same mod in RE-909, pictured below also in the bottom of the board, cymbals crosstalk and digital noise leak into the hihats channel is eliminated, which fixes the last remaining issue in my build. I used a thick grounding wire to connect the lower pin of C151 to the double hole in the common ground track next to R236. This fix works perfectly on traffo PSU but I can’t guarantee it works on safe PSU (and preliminary tests show it doesn’t) because of the difference in ground routing. Otherwise, enjoy your digital noise-free, crosstalk-free RE-909!"
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| 6 | Gate | in case you hear the garte Gate signal of the SD in BD - you can try to connect a 1uF polar cap** between GND and Trigger. Measure with an scope to find the best value - maybe 470/680/820nF is fine too - or less. | 15.may 2022 | was posted in the RE-909 FB group omg 10. may 2022 not tested by me, but confirmed by other people |
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