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RE-808_Component_Placement_Guide_v1.0.0.pdf


Firmware Installation (on your own risk)

  1. turn on and send 808.sysxex
  2. turn off and on again
  3. send the boot loader sysex (1.30 version)
  4. turn off
  5. turn on while hold Step1 (all lets flashes like night rider mode)
  6. now send the REEMU 1.3.0 sysex
  7. machine restarts byself in 1.3.0 mode
  8. turn off and on the 808
  9. send the 808.sysex again
  10. reload the boot loader 1.4.3 in boot loader mode (hold step1) and upload the REEMU 1.4.3 sysex

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

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