TC Electronic BH500 help



I've been referred here from your facebook page.

My bass player has an old BH500 head and something has started rattling around inside. It just sounds like something is working loose. It works OK at present but it worries me!

Can anyone guide me on removing the chassis from the case to have a look? I don't know whether it's just fixed by the 4 screws or if anything else has to be removed. It seems very firmly fixed! This might stop him from throwing it in the skip!



Thanks for any help anyone can give