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Date | Location | Type | Identified issue | Resolution | related for development | affected PCB version | fixed Version |
|---|---|---|---|---|---|---|---|
| 30 Aug. 2022 | BOM - Voices | ERROR | the Trimmer Mouser part number is invalid | Line 180: 652-3296X-1-103RLF | BOM update needed | -- | |
| 30. Aug 2022 | BOM - Mainboard | INFO | the 220uF caps on Mainboard are BI-POLAR - | respect the BOM partnumber | |||
| 07 Sep. 2022 | ControlboardHardware Board | BUG | there's no Pinout described on the Controlboard for the OLED - | please read carefully the next INFO section | can be improved with an silkscreen info | 1.0 | |
| 13 Sep. 2022 | BOM: Voices | INFO | the Mouser BOM show 32x 240pF C0G capacitors for the Voices - used in the OTA Filter. This are 10% tolerance. | you can change the capacitors to Polyprop, Silver MICA, Styrene - with 1-2.5% or match good capacitors in this range with an LCR meter (check the data sheets of the meter) | - | - | - |
| 13.Sep | create a Silkscreen for MTA156 Powerheader pinout | 1.0 |
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Date | Location | Type | Issue | Tip |
|---|---|---|---|---|
| 13. Aug.2022 | ControlboardHardware Board | INFO | minimize Slider/Potentiometer malfunctions Soldering Info | when you install the sliders, DO NOT solder all pins successively, solder only one pin at top and bottom and go to the next slider, when you have all installed - solder the next single pin at each slider. this have to respected on Potentiometers too. The Sliders and Potentiometers have lubrication inside which is sensitiv for heat and can be easily damaged (was happen on many Syncussion clones ) |
| 13. Aug.2022 | ControlboardHardware Board | INFO | OLED Selection and R101/R32 - R100/R102
| when you have an OLED with the PINOUT: VCC-GND-SCL-SDA install R100 and R102 (0 Ohm - a bridge) (R32/R101 must be empty) in case you have an OLED with the PINOUT: GND-VCC-SCL-SDA install R101 and R32 (0 Ohm -a bridge) |
| 13. Aug. 2022 | All pcbs | INFO | some IC Sockets are not in the same direction, it´s an known issue that people install an IC backwards | Double and triple check every IC orientation - maybe 80% of all device malfunctions was occurred by this and can end in a very expensive repair |
| 13. Aug.2022 | ControlboardHardware Board, PSU, Mainboard | INFO | the LEDs do not work | when you build the device - its important to start with the power supply - here you can test the LED orientation. never trust the vendor pinout for LEDs. normally is the long LED leg the positive end (anode) (but some circuits are powered from negative rails and GND is the positive end in this case- just saying - to explain it) |
| 13. Aug. 2022 | Mainboard | INFO | solder on the Edgecard holder the pins where you find the white stripe on the PCB -
| you can't install the edge card in different way |
| Mainboard | INFO | keep the power Cable on the length as short as possible - that minimize the risk that you accidentally install the PSU card in a voice card | ||
| Hardware Board | INFO | pay attention to "Pot23 - Volume" (upper right corner) this is the one non-center detent pot. |
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