As we have another SMP 2000 and it works fine we purchased another one thru Amazon-----the newer unit played 2 numbers then stopped---no flashing blue light----I disconnected and reconnect head phones and turn off/on and blue light will flash a couple times and unit turns off again----I've done this numerous times---can't get it to play---unit is fully charged---headphones work fine on our other unit-----it appears there is a problem with the player itself---any thoughts