Repairing electronic devices isn’t as hard as it used to be. Thanks to the internet, it’s easy to find datasheets and application notes for any standard component inside your gadget, and once you’ve found the faulty one, you simply buy a replacement from one of a million web shops — assuming you don’t end up with a fake, of course. When it comes to non-standard components, however, things get more difficult, as [dpeddi] found out when a friend asked him for help in repairing a Roland Juno-G synthesizer with a broken display.
The main issue here was the fact that the display in question was a custom design, with no replacement or documentation available. The only thing…
External feed Read More at the Source: https://hackaday.com/2022/10/15/reverse-engineering-a-display-protocol-to-repair-a-roland-synthesizer/
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