Sorted, i was playing around with more of the different modes and went to tap mode, and the led for the 5th string was lit permanently, and would not respond to any taps, as i moved further down the fret board, it suddenly started to work and the light was now going on and off, and now after turning tap mode off, the 5th string sounds correct. Thanks for your reply Guess a switch was stuck temporarily.

Hi there, received my yrg today, although being totally new to the guitar, and want to learn how to play, the 5th string does not sound right at all, sounds exactly the same as the 1st string, and after listening to a tuning video, the rest of the strings sound spot on, but not the 5th, am i doing something wrong, i tried resetting to the factory default and it has made no difference, any help much appreciated. thanks in advance.