ᐅ How do I fix a squeaking BILLY desk shelf?

Hello everyone,

Some time ago, I bought the Billy desk riser from Ikea because I wanted extra storage space above my desk. Unfortunately, the unit squeaks with almost every movement, which is really annoying. I have already tried checking and tightening the screws, but the problem persists. It seems to me that the wooden joints or maybe the hinges could be causing it.

I am therefore looking for tips or proven methods to permanently and effectively eliminate this squeaking without having to take the whole thing apart or replace it completely. Has anyone repaired something like this before or has an idea which product or approach works best?

For background: It squeaks more when sliding or slightly adjusting the riser, rather than when bearing loads.

Thanks in advance! 🙂