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Project

Projecttitel: RE-808

Status: IN PROGRESS

Startdate: 11/2021

Duedate: 12/2022

Last Update: 17.Nov.2022

Manufacture link: https://shop.re-303.com/product/re-808-bundle-3rd-run-advance-order/

source: Facebook.



after the RE-303, RE-606, RE-909 we have the RE-808 replica to build.

its an replica, which means 99.9% of everything is a replica - the pcbs, the case, the parts.

the only difference are replacement tactile switch of the sequencer.

but you can repair your TR-808 with the RE-808 parts.


Infos and groups:

https://www.facebook.com/groups/1095915370823319


BOM:

PCBs and some parts are available from the RE-303 shop

Cases and side panels are available from Kumptronics


BOM.RE808.Release v1.0.xlsx

Start/Stop cover and Tap cover of the switches are available from few Facebook users for now, maybe available later thru other suppliers.


Spacers (not in the BOM - but maybe supplied with the RE-808 case)

7 3 x 8mm FF Hex Spacer
4 3 x 10mm FF Hex Spacer
5 3 x 16.4mm FF Hex Spacer
3 3 x 18mm Hex Spacer
2 3 x 8mm MF Hex Spacer 8mm w/ 6mm Screw

Buildguide: (uploaded 08.May.2022 by DSL-man)

RE-808 Build Guide v1.0.pdf

RE-808 Wiring Guide v1.1.xlsx

RE-808 Switchboard Assembling v1.0.pdf

Alps Switches Modding Guide v1.0.pdf

RE-808-MYC-manual-midicable.pdf


NEW: RE-808 Case assembling guide. RE-808 assembly guide.pdf

Placement guide:

RE-808_Component_Placement_Guide_v1.0.0.pdf


Issue List


IDIssueFixdate

fixed version

1CPU mounting

As you can see you also need to do a jumper wire between the solder point marked A on the pixie cpu and pin 10 (!WE pin) of *any* of IC 7,8,9 or 10 (they’re all connected to the same signal)
Please note:
* This is on the back of the 808
* you solder the pins on the cpu on the “wrong“ side
* the jumper wire can be soldered directly as it’s just one wire, I use a pin header and patch cable here mainly during development as I can easily remove the cpu without having to desolder anything
* as the cpu is upside down, make sure you connect the midi wires the correct way!
* as always - pin 1 and 42 is unused and can be left unconnected (pin 1 is the hole with a square pad)

01/2022
2PSU 

Do not fit the DC jack on the PSU circuit board. Its not used and it is not wired correctly.

use a cable for the jack as shown for example

01/2022
3Tactiles /caps install

heres a tip about the installation of the tactile caps:


01/2022
4MIDI WIRING

  credits to a FB User..

11/2022
5Silkscreen wrong 

11/2022
6Mainboard resistors

11/2022
7guide /tip

for the voice board: 

first install all 1/8watt resistors on bottom of the pcb R1-9 are 1/8w or the switchboard do not fit

use MLCC caps there and no IC socket. for IC1.

when you have a solder frame: install the flat Trannys and ic sockets before you install the other parts


for mainboard

use for the noise transistor and muting trannys - ic socket pins to swap/change the trannys

install good trimmers from nearside instead cheap trimmers from component side - better calibration possible

11/2022
8Transistors - sequencer failure

use sockets for the muting transistors.

some users reported issues in combination with the pixie CPU, boot/start problems.

the muting Transistors affect this  - you can remove this.

1.Dec.2022
9Power Pinout

credits by Martin.J.K  - Thank you

02.Jan.2023
10general

install good trimmers on back side (solder side) - for easier calibration

install the BA662 clone on solder side - in this was you can use a socket

install the muting JFETS and noise Transitor on solder side for easier swapping

install R333 on solder side to give you the opportunity to replace this with a trimmer (50k) to change the handclap sound..

02.Jan.2023


Version Published Changed By Comment
CURRENT (v. 16) Apr 05, 2024 13:17 LED-man
v. 65 Jan 04, 2024 09:34 LED-man
v. 64 Jan 04, 2024 09:32 LED-man
v. 63 Sept 14, 2023 16:06 LED-man
v. 62 Sept 14, 2023 16:06 LED-man GND wiring updated
v. 61 Sept 14, 2023 16:01 LED-man Reverted from v. 59
v. 60 Sept 14, 2023 09:07 LED-man grounding changed - no GND on the case needed.
v. 59 Jul 21, 2023 21:14 LED-man new 808 cable picture in HD and cable length pdf
v. 58 Jun 02, 2023 07:41 LED-man
v. 57 Jun 02, 2023 07:36 LED-man

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