Skip to main content

Rejunevate RE'AN 48 points patchbay

I have 4 of these patchbays, which I purchased used. As time goes on, I encountered some bad connections, and even dead channels. So I decided to do a cleanup and deoxidize session.

The circuit

The Re'an patchbay has 24 balanced channels, based on 24 identical circuits. Each circuit has 4 stereo female jack socket; 3 of them are similar, the last one is slightly different to break the normalization when a jack is inserted in bottom front.

FrontCircuit of one channelBack
2 
 1
3  4

Testing the patchbay

  1. Grab a pen and some paper.
  2. Select a source with a stereo headphone output (I used my Yamaha RX11), a stereo cable and a stereo headphone.
  3. Remove the patchbay from your setup and repeat the following procedure for each channel.
  4. Connect your source to position 1 and your headphone to 4.
  5. Play your source: sound must be loud and clear, without gliches. Toggle slightly each cable, sound must stay clear.
  6. Then connect your headphone to 2 and check.
  7. Move your source to 4 and check again
  8. Finally, check with the headphone connected to 3.
  9. If you hear any glitch, note the channel and the defect your hear: drop of volume, one channel is deaf or both

Fixing the issues

Most of the time, the issue is localized in the bottom front socket.

  1. Insert a jack in the socket; this will open the contacts.
  2. Spray few drops of contact cleaner such as Deoxit D5 (or WD40, despite it's not a contact cleaner per se).
  3. Test again.
Depending of the issue, you may need to slightly bend the contact down with a tool. The front contact is common to both channels.
 

Labels:

Comments

Post a Comment

Popular posts from this blog

Drive replacement for Fostex DMT8-vl

The IDE hard drive on my Fostex DMT8-vl multitrack recorder shows signs of its imminent death; when getting hot, I could not record anymore. Must be said this drive comes from an old Sun Station, and has been replaced because I/O failures were detected by Solaris. It worked at least 5 years in my recorder: not so bad. However, time is now to replace it. The DMT8-vl is not able to handle drives bigger than 8.4 GB. Well, it is able to (the current drive is 15 GB), but only 8.4 GB will be usable. My tought was to use a 8 GB CompactFlash; having no moving parts means no noise, which is quite temptating for a music recording device. I purchased a CompactFlash-IDE adapter on the internet (8$) and I had to build a male-male IDE cable adapter (4$). Unfortunately, this doesn't work. The drive is correctly discovered by the operating system, which proposes to format it ("format IDE?"). After answering "yes", the formating runs pretty fast (faster than on a real drive), ...
6 comments
Read more

My journey with ATtiny4313 (part 1)

Introduction The context For a personal project, I want to program an Atmel ATtiny4313 microcontroller. I use microcontrollers for several years, but not on a regular basis (maybe 3-4 times a year), mostly for testing and generally with a deceptive result. But failure isn't the best training? This article aims to share my errors and success, as well as being a personal log. The project The project is to replace the main board of a Soundpool MO4, a MIDI OUT extension for the Atari ST; details here . Overall, the project is pretty simple: reading the parallel port and copy verbatim the data to MIDI out. This is the reason behind my choice of this particular microcontroller, since it embeds an USART and has an 8 bits parallel port (20 pins DIP package). The MO4 having 4 MIDI Outs, I will use 4 ATTiny4313, one for each out; this is actually cheaper than finding a 4-channel USART. Each microcontroller must determine if the data present on the parallel port shoul...
Post a Comment
Read more

Samba: Clients get "system error 1223" (or 123) after a server reboot

Facts: a Linux+Samba server shares anonymously a folder. After a reboot, Win clients could not attach the share drive anymore. C:\>net use \\mylinux\folder Enter the user name for 'mylinux': System error 1223 has occurred. The operation was canceled by the user. C:\>net view \\mylinux\ System error 123 has occurred. The filename, directory name, or volume label syntax is incorrect. The process are present, and tcpdump doesn't provide much information. What's going on? After hours of headscratching, the light came: the firewall was on and no rules for the Samba protocol! Grrr!
2 comments
Read more