Hello there and welcome to Just Answer. My name is ***** ***** I will be assisting you today. I am an engineer with over 30 years of electrical and electronic training, repair and installation experience. I will try and answer your question accurately and precisely so that we can get you on your way.
I assume this is an Alesis SR16? If so, you can use any type of aerosol electrical contact cleaner. Here in the US, the brand I like is "Stoner". You may have this available but if not, any other should be good also. USe the one with lubricant if available.Good luck and I'll be here if you need further help.
Please consider rating my service. It's the only way I am conpensated for my time and effort.Thanks very much.Steve