Abstrakt Instruments VS-1 DIY

1

Jan 2024

Silkscreen wrong

Voice Motherboard

diode wrong silksvcreen orientation

D13 

The Silkscreen is correct on the PCB

Open

install against silkscreen

modwiggler user

no

diy

this was a wrong issue !!

2

25.Jan 2024

info  

PSU

check that your PSU is still modified with other regulators

my psu was still modified with the correct parts since it was bought as Partkit from Brian, back in 2020.

perform a visible check and keep in mind to test the psu later without attached Device/pcbs, as described in the YT Videos/guide.

Patrick

no

diy

3

25.Jan 2024

build info

Voice and Voice Motherboard

you have to respect that the MOLEX connectors on the Voice Motherboard and Voices have to installed in one step.

You cannot start with soldering the molex connectors at the pcb without align it against the opposite part.

do this: 

It's highly recommended to use a ruler or other exact flat precisely tool to allign the Molex Pin headers in a row. This makes things easier.

Open

Patrick

no

  valid - tested by Patrick

4

27.Jan.2024

BOM failure 

Voicecard

Voice Cards BOM lists 1.5M resistor for R7 and R45, but those are already filled with 49.9K resistors as per the BOM and the schematic

wait on validation, DO NOT INSTALL R7/R45

do not populate R7 and R45

Stuck and Patrick

not validated now

BOM 1.0.3

5

27.Jan.2024

Bom failure ?

Output board

On the Output board - R22 isn’t listed on the BOM, schematic says 2.2K

wait on validation

Facebook Sduck

notvalidated now

BOM 1.0.3

6

27.Jan.2024

Info  

Output board

C22 is DNP - do not populate

C22 is DNP - do not populate

Facebook Sduck

notvalidated now

BOM 1.0.3

--

7

27.Jan.2024

BOM failure

Output Board

Q15, 16, 17, 18 aren’t listed on the BOM

is  2SC2878

Facebook Sduck

not validated

BOM 1.0.3

change the BOM

8

28.jan 2024

info  

Voicecard

"Note that R140 and R141 are the preinstalled smt resistors on the back."

Facebook Sduck

valid  

BOM 1.0.3

change the BOM

9

28.jan 2024

info  

Voicecard

"Brian for some reason doesn't list parts that are back in the "Rare Parts" list, so A3 is an CA3086N; A10, A12, A13, A14, A15 are all AS3080E; and A18 and A19 are AS3310."

Facebook Sduck

BOM 1.0.3

change the BOM

10

28.jan 2024

info  

Voicecard

"There is one wrong sized hole on the bottom row of holes for the molex connectors. In one of the videos Brian suggests using a dremel tool to grind down the size of the affected pin, which I tried and it was relatively easy and worked well. I suppose you could also drill out the hole, but you would then also drill out the solder pad, and would need to run a wire jumper from the affected pin to one of the vias to make that work."

Facebook Sduck

valid  

BOM 1.0.3

Brian change on Voicecard

11

29.Jan.2024

info  

Voice MOBO

30k resistor bag is labeled with quantity of 32 - in Altium is 24.

24 are required - BOM 1.03 correct, just the bag is wrong 

Patrick

valid  

12

29. Jan.2024

info  

Voice MOBO

100nF caps 20 in bag and labeled with quant. of 20, BOM is quant. of 18 and in Altium

18 required - Bag is wrong

Patrick

13

29.Jan.2024

Important Info   

Voice Mobo

don´t remove the pcb stripes (from pcb fab - panelized pcb) in case you use a solder frame. otherwise the traces can be damaged

Patrick

valid  

14

29. Jan 2024

improvement

Voice Mobo

use 1/4W 0.5W watt 0207 Format resistors for R66/R67 to improve thermal noise

use 1/4W 0.5W watt 0207 Format resistors for R66/R67 to improve thermal noise

Patrick

15

5.feb 2024

bug  

Voice Mobo

U2 wrong silkscreen orientation

install in this way

Open

Patrick

valid  

batch 01/2024 from kickstarter

Brian - change the Silkscreen

16

07.feb 2024

Important Info  

Output Board

Install

R7, R11, R37, R41, R48 & R73

 with few millimeter distance against the PCB to avoid Thermal Issues

Install

R7, R11, R37, R41, R48 & R73

 with few millimeter distance against the PCB to avoid Thermal Issues.

Look in. the Buildguide

Brian

valid  

Yutube video

and build guide

all Versions

17

07.Feb.2024

Important Info  

Voice

Since we have to trim the Voices by Trimmers from Top, its not possible for 2 Trimmers when you have installed IC Sockets for A3 (Expo CA3086/CA3046)

Do not install a IC Socket in A3

in case you still installed a IC Socket, desolder 2 pins of T3 and pull the trimmer out as shown

Open

Patrick

valid  

all Versions

17

07.Feb.2024

Important Info  

Voice

Since we have to trim the Voices by Trimmers from Top, its not possible for 2 Trimmers when you have installed IC Sockets for A10

Do not install a IC Socket in A10

in case you still installed a IC Socket, desolder 2 pins of T9 and pull the trimmer out as shown

Open

Patrick

valid  

all Versions

--

18

07.Feb.2024

Tip  

all PCBs

do not clean the Styrene Cap with Isopropyl - the Capacitor is glued and can be damaged

Patrick

valid

19

07.Feb.2024

Tip  

all PCBs

Do not wash the Trimmers, install the Trimmers and styrene Cap on Voice Card at the end and 

Patrick

valid

20

07.Feb.2024

Tip  

Voicecard

for better Installation and to avoid a broken capacitor due to mechanical stress bend the pins for C19 and C12

on left original, on right bend style

Open

Patrick

  valid

@Brian

change the Voicecard Pinout for C19/C12

21

10.Feb.2024

BUG  

Controlpanel PCB

from my experience it can happen under Mechanical stress situation that the Potentiometer Chassis/body comes in contact thru the PCB solderstop with the traces..

This was happen on TTSH, DDRM and other devices and the users wasn't able to Troubleshoot easily the root cause !

use a tape or other isolation on 2 Potentiometers as shown here:

Open

Patrick

valid 

DIY rev.A

@Brian

change the routing of the trace

22

10 Feb.2024

BOM failure and Kit failure

Voice PCBs

in the full kit comes for the Voice Pcbs only 6,8uf.

but no 10uF caps for the power rails.

6.8uF should be fine for the VCA out from the original schematic

wait on Brian

Patrick

DIY rev.A

@Brian please give an info about the 6.8UF caps - why are no 10uF caps in the Voicecard bag ?

23

12.feb.2024

BOM failure 

Output Board

affect 1.04 version Output Board C31 is wrong in line 203 must be C30

typo in BOM correct is 150pf C30 instead of c31

Patrick

DIY revA

at Brian pls. fix it in BOM rev 1.05

24

12.Feb.2024

 Major Bug  

Panel board 

there's a potential risk that the L bracket comes in contact with the diode

furthermore is a trace on the right side - which can cause a problem under mechanical stress

file down the L bracket and use a tape as shown

Patrick

DIY rev A

25

14.Feb.2024

BOM failures

BOM - ALTIUM

make sure to re-open every day Altium from the link on Brians website.

The Browser session in Altium do not update automatically the content in case of changes by Brian.

For example reported 2 users a mismatch between BOM and Altium - R83 and R133 must be 12K as stated in BOM 1.03 and 1.04 and Altium.

always use this Altium links:

https://abstraktinstruments.com/vs1-diy/

its a voltage divider and 12K should be correct - wait on validation from Brian

Open