On June 9, 2013 at 09:54, JoeFlabitz said...
Many times it's told that the 3.5mm plug isn't fully engaged (not pushed in all the way).
Could be the initial RFX250 had the plug pulled, but not seated back correctly, and the new on was plugged correctly.
This is exactly what I was referring too. It's more common than you'd think. It looks like its seated but it doesn't "click" in all the way.