APA 372947 Automatic Battery Charger 24V DC 25A Volt Amp 11810

  
APA 372947 Automatic Battery Charger 24V DC 25A Volt Amp 11810. I plugged it in and light didn't come on I didn't notice any activity. The visible fuse on the front looks intact. Looks like the case has been opened up at one point because a couple of screws are missing.