Problem with Juno KEY TRANSPOSE button

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1-Post Wiggler
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Location: Paris

Juno 66 post upgrade strange led behaviour

Post by yeager101 » Wed Jan 04, 2017 10:41 am

Hi Tobias,
First of all, happy new year :party: and bravo for all the great work on this upgrade, my juno is very proud :nana: !

A few days after christmas installation, I am starting to get strange led behaviours when I hit the key transpose button that acts as a "function" key for activating play mods and other options on the juno66.

Although the red led should stay on when pressed, it is not. Instead I get a slight loss of lighting on all three waveforms button leds :hmm:

It only happened after a few days after the juno was upgraded. Everything works fine but this led not working properly puzzles me... I know its only ergonomics but, hey, it helps a lot !

Do you have any idea to correct this problem ? Is it a false contact somewhere while installing the upgrade ?

Many thanks !

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Veteran Wiggler
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Joined: Sat Dec 27, 2014 4:29 am
Location: Berlin

Post by tubbutec » Fri Jan 06, 2017 5:39 am

this is a common problem with Junos. After 30 years a mechanical stress on the panel boards, traces and/or solder joints break. This often leads to the behaviour you are describing. You can fix the traces by soldering a wire in its place.

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