Hi there I hope someone can help me.Recently bought a second hand Aer one bass combo,its going perfect apart from the fan not coming on.It used to come on as soon as I turned the amp on,so im wondering can I do damage to it,as I noticed it getting hot after a 2 hour gig,and also is it an easy fix finding and replacing the fan.The amp is just over a year old and was bought off Thomann, so I could check with the seller about the guarantee on it.Would prefer to get it fixed myself rather than sending it back to Thomann.Greatly appreciate any help or advice on this.Thanks.