my preamp wont power up


Hi my pre has been unplugged for month.It now wont power up.The fuses are ok,i do live in a area with hi humidity. Any suggestions would be good thanks.
misternice
Thanks,no transformer sound i can hear.Yes a techy will do it.looking at those other posts, maybe a cap in the power supply.I had changed to a tungsol black plate which i prefer,i wonder if that brought this on.
I like my se,im not giving up on it yet.ive had it for a couple of years.One power tube went down,now this,i hope its all good from here