Any place in Houston to repair my microKORG synthesizer?

Hello — I have an old microKORG synthesizer with a key in the middle that’s barely audible. I’d like to take it to a place that can take a look at it and likely do an easy fix/cleaning to repair the synthesizer. Anywhere in town? I’ve just read some horror stories about a synth store in Austin called Switched On, but I’m willing to travel that far if necessary, although Houston is preferred.