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Comment: Sync Mod
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Projecttitel: ISE-NIN

Status: 
Status
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titlefinished

Startdate: 26th Aug.2022

Duedate: 15th Sep.2022

Last page update:

26

11.

Feb

Nov.2023

BOM corrected

- VCO Sync failure

Manufacture link: https://black-corporation.com

Modwiggler: https://www.modwiggler.com/forum/viewtopic.php?t=265268

Facebook Build Group: https://www.facebook.com/groups/517757979447099 

Facebook User Group:  https://www.facebook.com/groups/800008500661600

Gearspace : https://gearspace.com/board/electronic-music-instruments-and-electronic-music-production/1353336-black-corporation-ise-nin-8-voice-analogue-synthesizer-15.html

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This guide is a best practice guide and I'm not responsible for any damage, or product quality.

Please respect your local laws/regulation for handling of electronics/electricity electricity.

I'm not responsible for damages, failures with your build.

Do not try to build this device without basic knowledge of synthesizers. You need experience.



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Before you built the ISE-NIN kit:

  1. You need experience in soldering SMT Parts (around 350 SMT capacitors and 32 ICs in SOIC format).
  2. required Tools are: Soldering Station, Flux pen, magnifying Glasses, Oscilloscope, some pliers, tweezers, PC or Mac for installation of the boot loader and firmware
  3. It is recommended to have a bench- power supply with current limiter for the first test.
  4. Programming is done via an ST-link programmer which is listed in the BOM (former DDRM builders can use the existing programmer) - normally its a Windows App. but with some experience in MacOS possible too

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Currently identified Errors / Omissions / Errata:

Sync doesn't work correct
Issue ID

Date

Location

Type

Identified issue

Resolution


related for development

affected PCB version

fixed Version
130 Aug. 2022BOM - VoicesERROR

 Mouser part number for the trimmer is invalid 

Line 180: 652-3296X-1-103RLF
Line 181: 652-3296X-1-104RLF


BOM 1.0.0 and 1.0.1 update needed

--

BOM 1.02
230. Aug 2022BOM - MainboardINFOthe 220uF caps on the Mainboard are BI-POLAR  - respect the BOM partnumber


307 Sep. 2022Hardware BoardBUG

there's no Pinout described on the Hardware Board for the OLED - 


please read the INFO section in the next table on  "OLED  selection" carefullycan be improved with better silkscreen information1.0
413 Sep. 2022BOM: VoicesINFOthe Mouser BOM shows 32x 240pF C0G capacitors for the Voices - used in the OTA Filter. These are 10% tolerance.you can change the capacitors to Polypropylene, 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)  ---
513.Sep.2022



create a Silkscreen for MTA156 Powerheader pinout1.0
629.Oct.2022VoicesBUGVCO Sync use the wrong waveform

remove on every Voicecard IC3 (TL064).

bend Pin 12 of the TL064 outwards, install the IC3 back in the IC socket and solder a resistor leg from Pin12 to Pin10 as shown:

Image Modified

fix the PCB routing

1.0
717.Nov.2022PSU cardINFO

The DC-DC converter goes very hot after 30minutes, but its within the data sheet specs (65degrees Celsius is the max. operation).

The 65 degrees can be reached in Summer or other conditions (few hours operating time)

But for longterm stability of the components, I highly recommend the usage of a big cooler

install a 25x25mm cooler with an high of minimum 20mm.

I found on tme.eu a product with self adhesive foil and 24.5mm height.

the temperature of the DC.DC converter is 51 degrees after an hour on the regulator and 43 degrees on the cooler.


TME Part nr.

ATS-55250W-C1-R0

Image Modified

1.0BOM 1.02 is updated for this !!

Important Information before you start assembling:

8

08.Oct.2023

update on 04.Nov.2023

all voicesBUG

the Sync function must be fixed 

there's a "stepping" in the sync sound.

respect Step 6 from the Issue list too.

update: 04.November 2023

there's a additional 10K resistor to be installed, which isn't described in the notes here.

Connect an additional 10K Resistor to GND via PIN10. This resistor is shown in the ssi2131 data sheet.

Image Added

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a Facebook user made the change in a other way:

"This is how i did the sync fix, i only had 1206 10k resistors, would be perfect with an 0805. Will put a drop of paint there, it will look nice (from a distance Image Added )"

Image Added



1.0
9

15.March 2024

MainboardBUG

Volume Potentiometer,

only at the first 50% of rotation is the Volume gain impact given. at around 50-100% is only few dB volume change.

from BC officially:

"Hey Everyone, here is the solution to the DIY volume issue. On the MB (motherboard), replace resistors R99, R100, R101, R102 with 100k 1%.
This is not an issue on pre-built units."


click to enlarge:Voluem pot BUG

Image Added

change the BOM


1.0


Important Information before you start assembling:

Tip

4, PSU, Mainboardthe LEDs do not work 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 the long LED leg is the positive end (anode)

(but some circuits are powered from negative rails and GND is the positive end in this case- just as an explanation)

5Mainboard

solder the pins on the Edgecard holder where you find the white stripe on the PCB - 

Image Removed

1414

BOM1.0 Change- fixed in BOM v1.0.1

R103, R104, R105 = 330K (was 30k in BOM rev 1.0.0)

R128, R143 = 10K (was 30k in BOM rev1.0.0)

R137, R146 = 10K.  (was 20k in BOM rev1.0.0)

Image RemovedImage Removed

A. if you are a pro builder.. you still have a device to match trannys.

B. you can order or build a tester

C. you order matched pairs by me or thonk

https://www.diysynth.de/diy-components/aktive-bauteile/gematche-transistoren.html?language=de
Info ID

Date

Location

Type

Issue

Tip



113. Aug.2022Hardware BoardINFO

minimize Slider/Potentiometer malfunctions

Soldering Info

when you install the sliders, DO NOT solder all pins successively, 

solder only one pin at the top and the bottom and proceed to the next slider, when you have installed all of them -  solder the next single pin of each slider.

this has to be respected with potentiometers too.

The Sliders and Potentiometers have lubrication inside which is sensitive to heat and can be easily damaged (this mistake was made in  many Syncussion clones ) 


2Info ID

Date

Location

Type

Issue

113. Aug.2022Hardware BoardINFO

minimize Slider/Potentiometer malfunctions

Soldering Info

when you install the sliders, DO NOT solder all pins successively, 

solder only one pin at the top and the bottom and proceed to the next slider, when you have installed all of them -  solder the next single pin of each slider.

this has to be respected with potentiometers too.

The Sliders and Potentiometers have lubrication inside which is sensitive to heat and can be easily damaged (this mistake was made in  many Syncussion clones ) 

213. Aug.2022Hardware BoardINFO

OLED Selection and R101/R32 - R100/R102

Image Removed

when you have an OLED with the PINOUT: VCC-GND-SCL-SDA install R100 and R102 (0 Ohm - a bridge) (R32/R101 must be left empty)

in case you have an OLED with the PINOUT: GND-VCC-SCL-SDA install R101 and R32 (0 Ohm -a bridge)

313. Aug. 2022All pcbsINFOsome IC Sockets do not point in the same direction as the others, it´s a known issue that people install ICs backwards Double and triple check every IC orientation -  maybe 80% of all device malfunctions happen because of that and often end in very expensive repairs13. Aug.2022Hardware BoardINFO

OLED Selection and R101/R32 - R100/R102

Image Added

when you

have an OLED with the PINOUT: VCC-GND-SCL-SDA install R100 and R102 (0 Ohm - a bridge) (R32/R101 must be left empty)

in case you have an OLED with the PINOUT: GND-VCC-SCL-SDA install R101 and R32 (0 Ohm -a bridge)


313. Aug. 2022All pcbsINFOsome IC Sockets do not point in the same direction as the others, it´s a known issue that people install ICs backwards Double and triple check every IC orientation -  maybe 80% of all device malfunctions happen because of that and often end in very expensive repairs
413you can't install the edge cards in the wrong way6. Aug.2022Hardware Board, PSU, MainboardINFOkeep the length of the power cable as short as possible - that minimizes the risk that you accidentally put the PSU card in a voice card slot714.Aug.2022Hardware BoardINFOpay attention to "Pot23 - Volume" (upper right corner) this is the one non-center detent pot.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 the long LED leg is the positive end (anode)

(but some circuits are powered from negative rails and GND is the positive end in this case- just as an explanation)


5138. Aug. 2022MainboardBUGfixed on 24.Sep.2022 in BOM 1.0.1903.Oct.2022PartsINFOthe 2N3094 on the Voicecards must be a matched pair (within 2mV vbe)INFO

solder the pins on the Edgecard holder where you find the white stripe on the PCB - 

Image Added


you can't install the edge cards in the wrong way
614.Aug.2022MainboardINFOkeep the length of the power cable as short as possible - that minimizes the risk that you accidentally put the PSU card in a voice card slot

714.Aug.2022Hardware BoardINFOpay attention to "Pot23 - Volume" (upper right corner) this is the one non-center detent pot.

814.Aug.2022MainboardBUG



BOM1.0 Change- fixed in BOM v1.0.1


R103, R104, R105 = 330K (was 30k in BOM rev 1.0.0)

R128, R143 = 10K (was 30k in BOM rev1.0.0)

R137, R146 = 10K.  (was 20k in BOM rev1.0.0)

Image AddedImage Added

fixed on 24.Sep.2022 in BOM 1.0.1
903.Oct.2022PartsINFOthe 2N3094 on the Voicecards must be a matched pair (within 2mV vbe)

A. if you are a pro builder.. you still have a device to match trannys.

B. you can order or build a tester

C. you order matched pairs by me or thonk

https://www.diysynth.de/diy-components/aktive-bauteile/gematche-transistoren.html?language=de




10

18 April 2023

updated 23June 2023

PSU BUGR8 220R 250mW  on the PSU goes very hot - it affect the lifetime of this part and brings thermal noise in the circuits.

 replace R8 (220R) with a  470R 1watt 1% metalfilm with 50ppm 

digikey: BC4533CT-ND


a other untested workaround is in to remove the 220R and connect a wire thru 100R 1-2Watt to the the 5VA regulator output to the left TL431 (use the pad of the 220R). this workaround is only for people who know what they do - they dont need my help/infos to do this mod.


11

08.Okt.2023

all VoicesBUG

the Sync function must be fixed 

there's a "stepping" in the sync sound.

respect Step 6 from the Issue list too.

The Issie is reported in this list, because its easier to cut the trace before you have installed the SMT IC7


Image AddedImage Added



PCB Scan Pictures (thanks Janne.I)

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