Vintage Simmons Drums (UK) Users Group

Hi Ladies and Gents , 

Thank you for talking your time reading this .
I recently purchased an sds7 from south korea , 
and today having put in the plug ( belgium ) and switching on the 
machine , 
i saw the lights flash for a bit but then all went dead , 
reanimating the machine doesn't work .
I am by far not experienced in the electric domain , but i did 
noticed , after having pulled out the fuse that the tube looks 
greyish dark on the inside walls and hollow in the centre .
I know nothing of this brain's past , perhaps it hasn't been used in 
a long time .
I would greatly appreciate it if someone could help me out on this 
one , 
been waiting so damn long for this brain and having it here out of 
use is torture !.
Perhaps a new fuse ? , or new battery ? 
easy to find ? .
Thank you very much 
Sander