The rubber buttons found on many electronic products can wear with time. You could source spare parts and replace them or quickly fix them with a little Bare Conductive Electric Paint!
- Start by disassembling the device you want to fix, to get the rubber button out. In our case the buttons from a Volca Beats drum machine.
- Apply a little Electric Paint to the faulty contact.
- Dab off any excess paint using a cotton bud. You want a uniform layer of paint that is just thick enough, avoiding any lumps.
- Allow the paint to dry completely.
- Check the PCB contacts as you’ll often find that the conductive material that was originally on the button has come off, leaving black debris on the PCB contact.
- Clean up any debris using a cotton bud and some isopropyl alcohol.
Once you’re done you can put your device together again.