RD-300s Contact Board Repair

[SynthWizard]

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RD-300s Contact Board Repair

<!-- SC_OFF --><div class="md"><p>Hi all!</p> <p>I have recently picked up an EXTREMELY cheap Roland RD300s that has evidently been packed away for many years and had to be cleaned up a fair bit to get running. </p> <p>I seem to have every single thing including every button, slider, input, output, etc. working aside from one key. My D3 key seems to be having issues sending a signal to the circuitboard. I have wiped all other key contacts down thoroughly (but not too thoroughly to avoid rubbing the carbon contacts off) but am still having no luck with this one key. </p> <p>Below is a linked photo of the contact board of this key. Wondering if anyone can identify what the issue I'm having might be and how to fix it?</p> <p><a href="https://drive.google.com/file/d/1F6UYDj8Ecdt4OIUBYm0aKKpMbAmdL7j8/view?usp=drivesdk">https://drive.google.com/file/d/1F6UYDj8Ecdt4OIUBYm0aKKpMbAmdL7j8/view?usp=drivesdk</a></p> </div><!-- SC_ON --> submitted by <a href="https://www.reddit.com/user/TheDrivingPerson"> /u/TheDrivingPerson </a> <br/> <span><a href="https://www.reddit.com/r/synthesizers/comments/yczi0q/rd300s_contact_board_repair/">[link]</a></span> <span><a href="https://www.reddit.com/r/synthesizers/comments/yczi0q/rd300s_contact_board_repair/">[comments]</a></span>