> In the absence of somebody that really knows what they are talking > about, I will try and help. I recently had problems like this with a
Any reply to a question about EMC-related issues on this *kicad* users' forum (including yours) is going to be highly incomplete unless that reply is "Go and read a respected book on EMC". Since the full answer to the question would require a book, partial answers do not imply lack of knowledge. Something we both failed to mention was decoupling capacitors. Every component that draws AC current needs one or more suitable decoupling capacitors as closely coupled as possible to the device. These are a critical part of reducing the size of the current loops that Dick mentioned. You may already have done this, but I see no reference to decoupling in the thread and insufficient decoupling is a perennial cause of problems. Oh, and do find yourself a good book on EMC :). Regards, Robert.
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