Shipping directions for Juno 106 Module Board

Thanks for choosing to have us restore your module board! Here are some shipping tips and other info.


Open up your Juno

This can be accomplished in two ways. The first way and best way is to unscrew only the top 2 screws on each plastic side, so 4 screws in total. Once you have them out, go ahead and put them in a safe place (we like to put them in a baggy and then leave the baggy inside the synth while it’s being repaired).

Now you will be able to lift up the control panel. To the left side of the machine, you will see the module board. That’s the board you will be sending us.

Some (very few, very early) juno’s have a wire soldered onto a test lead with TPAG (test point analog ground) written near it. In this situation, just cut the wire close to the test point. You will need to re-solder it when you receive it, but trust that it’s not too difficult and only basic soldering skills are required. Have a friend help you if you’re not comfortable. In the end, this test point is not even needed, and was omitted in later models.

Remove all the connectors from the board. You can do this by gently pulling up with a slight wiggle. The connectors are quite resilient, and will not break unless you try to break them.

Once you have the board out, it’s important to handle it with care. Static is not a huge concern as some may make it seem, but other precautions should be taken to not bend the board excessively or knock the epoxy coated chips too much.

On the bottom of the PCB, we recommend writing your name in sharpie in a blank, traceless area. If you don’t, we will do that when we receive it. That way we can be sure you get the same board back, as we’re working with many boards at a time.

Wrap the board with bubble wrap. One or two layers (depending on the bubble wrap type) is all that is needed. Antistatic bags are nice, but not necessary. There’s no reason to be excessive with the bubble wrap. Once it’s wrapped, put it inside of a box and put some bubble wrap inside the box too so it is not moving around too much. Then, simply tape the box up and mail it to:

Rosen Sound
1008 W Oak St.
Burbank, CA 91506

Once we receive it, we will notify you that it arrived. We may or may not open it immediately. Once opened, we will notify you if there are any problems with the board, then we will do our process to it and ship it back to you usually in the same box you shipped it to us in.

More Info

While our Juno module board repair is very successful, it would be irresponsible to say that it has a 100% success rate. Luckily, you have chosen a company that stands behind their work, and we will be happy to help you if a problem arises.

With that in mind, it’s important to understand what could possibly go wrong with these boards beyond the usual, and what that will cost you.

But before that, please bear in mind that you are paying for a service, not an item. Our process is described below, and we believe its the best module board repair servicing possible.

  1. Your issues could be the dual wave generator chips. There are 3 “DCO” chips inside the machine, 1 gives 2 voices their waveforms. We have seen them fail in many ways. We find that 1 in every 30 juno’s we service need one new dual wave generator. If you need this part, the cost is $45, we do not charge to install it, as it’s considered part of the rest of the complete service.
  2. Actually broken 80017A chip. This means that the voice chip itself isn’t dead because of the resin and solder pads (see below for a description of our process), but it’s dead because it’s physically dead on a scientific level. Just like any other integrated circuit, sometimes they just stop living. The replacement part is $30, and we do not charge to install it, as it’s considered part of the rest of the complete service.
  3. Actual problem with the board. This is VERY rare occurrence, and its the only situation where we will have to charge a labor rate to complete the job. Sometimes voices hang because of bad transistors or capacitors, or maybe the CPU is actually dead. In these situations, we will advise and discuss how to move forward. To date, this has happened once after restoring over 200 mail in juno’s. In regards to the question “do I get a refund if this is the case” the answer is no because in order for us to know if the board has a problem we need to do the rest of the services you already paid for first. Again, can’t stress how rare this is to occur.