TC Electronic BG250 rattle out of the box, is this normal?

[Mofo46]

Hi,
I just picked up a BG250 and loving the tone of the amp but when I first plugged the power lead in there was quite a rattle from the panel behind the lead, then when I was playing an F there was a resonance rattle from the same area in the back of the amp.
I thought 'oh great time for a replacement' so kept playing with effects and foot switch to see if anything else was broken and after about 10 minutes the rattles stopped even at high volume.
Also the high pitch whine that come from the amp had gotten quieter.
Has anyone else experienced these noises?
I'm wondering if I should contact Absolutemusic where I bought it from (who were excellent by the way) but thought I'd ask on here first.

Any help greatly appreciated, cheers

[bobbytodd]

if your not happy with it just send it back and ask for a replacement

[Mofo46]

Just to update, got my replacement, was a bit of a nightmare due to stock n build up to Christmas but absolute were really helpful.
Love the amp, very capable and light!