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Music Tech DIY • Restoring ANALOG RYTM Pad Sesitivity

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Restoring ANALOG RYTM pad sensitivity & triggering neighboring pads fix.
Acording to many reports, even new devices have some pad problems...

Today I looked over the shoulder of our studio tech who was taking care of our ANALOG RYTM MK1.

These MK1 & MK2 devices are known for their pads not working very sensitively, you often have to really hammer on them,
and triggering neighboring pads, but there is a solution:

First of all, the upper U- board has to be separated from the faceplate, which is done by simply loosening all the screws.
Then you have the 4x3 pad matrix (rubber/silicone) and the contact foil underneath.

These 12 copper contact surfaces on the UI-board have to shine again!
The problem is that the surface is simply corroded, as there are many air vents in the RYTM even on the board,
you will see what kind of dirt goes down. For this he used a metal cleaner paste with Q-tips and finally isopropanol to get everything dry & fat free.
Then the foil was put back on, with the iron-coated side facing the boards copper contacts - reassemble everything backwards.
Do not wipe off the foil, the contact layer is too thin and can be worn away, but you can spray it with air from the can.

Now comes the trick to getting the pads to work properly again:

Sequence.jpg
Wera 7440 0,3-1,2Nm.jpg

You have to tighten all the screws for the pad matrix with the same torque and in a specific order!
This tightening sequence is important, if the screws are tightened in a jumbled manner or normally crosswise,
the foil will curl and there will be contact problems.
We had a few minor problems with a torque of 0.45 Nm, for example that the pads were not sensitive enough or that the neighboring pad was triggered, but with a torque of 0.5 Nm everything was fine again after the circular sequence was followed.
(these M3 screws should not be tightened by more than 0.6 Nm for PCB assembly and 0.8 Nm max)
Well, you do need a special tool to get the right torque, but you can get one quite cheaply from Wera for €65 (Wera 7440 0.3 - 1.2 Nm).

I wish you the best of luck!

Cheers!
Godzilla

Statistics: Posted by Godzilla — Tue Jan 07, 2025 11:14 am — Replies 0 — Views 25



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