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How to clean the finger contacts on an SG503


 

I've got an SG503 on my bench that seems to be working fine on all ranges with nice leveled output, etc. However, the finger contacts under the cam switch need to be cleaned as I have to fiddle with the switch a bit to make contact at some settings.

It is my understanding that the best way to clean the finger contacts is to get a piece of paper/cardstock with a bit a 99% isopropyl under the contacts and gently pull it across the contacts. For those who have done this before, my question is what is the best approach to do this with a SG503? Is there a way to do this without a major disassembly? I'm not adverse to disassembling the module but I don't wan't to overcomplicate things if I don't have to.

Thanks!
Jay

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