Bought a used psr-403 (i'm a newby) and it works fine but needs a complete cleaning? I's like to remove the keys to do so. How to? Thanks
Try pressured air first of all.clean the dust without disassembling the organ.then if the problems remain remove the back cover and with clean air remove the dust.
I've worked on a lot of keyboards and they're all different.
Unless you have the service manual, a good set of electronic tools and have the time, don't attempt it, take it to a keyboard services specialist. If they know what they're doing, you'll get you keyboard back in good working condition.
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