Hello.. It seems the R4 over the course of two years has done something to the DS audio circuitry. At first it was a slight hum that reflected the status of the machine (e.g. a long zap when loading an NDS app) but now sometimes the noise overcomes the volume of some games! This effect is not exclusive to the tiny speakers of the DSLite either, since earphones yield the same crackling. I don't suppose there's a way to undo this damage? And will it get worse if I keep using the R4?