When some of the outlets, lights or electrical devices do not work there is a big chance of short circuit. You can easily fix this yourself by checking one of the two fuse boxes at the beginning and at the end of the hallway. These closets can be opened without a key. Next, check if any switch is down. If so just push it up. This should fix the problem. You can only do it yourself if you live on the first, second or third floor. Acces to the fuse boxes on the ground floor requires a key. Then it is best to email the RA's.