Thanks, Shiloh -- I doubt it's a video game, though. The guy is quite up there in years (post-retirement). I'm sure he's not building anything, either. It woke me up with a start on Saturday morning. It was the drilling, accompanied by music. So I'm pretty sure it's an alarm clock of some sort. I called the office on Friday afternoon and spoke to the landlord's daughter, who was very sympathetic and equally puzzled. Her father was away, but due back the next day. She said she'd make some calls and then call me back. She did, saying that she'd called the property manager and left a message, and then talked to her father who said he'd handle it. Supposedly he was supposed to be there on Saturday and would talk to him. Well, I still heard the noise over the weekend. I'll see what happens tonight when I go to bed and if I hear it again, I will call again tomorrow. I'm a tenant at will, so I don't have a lease. I've thought of calling the police, but I'm hesitant to take it to that level. If I don't get satisfaction, though, I will! It's to the point where I don't even want to go to bed because I'm afraid I'll hear it, so I fall asleep on the sofa and then I stagger into bed in the middle of the night when I wake up. Of course, I never really fall back to sleep soundly.

When I first moved in here, there was a loud noise that woke me up several times at night. Turns out, it was the defrost cycle of my fridge, which is very loud. I guess I'm used to it now, because I hardly ever hear it anymore. I used to live in an apartment by a train track where a train went through at 3 a.m. every morning and blew the whistle. The train yard and switching station was about a half-mile down the road. I never even heard it after awhile. It used to scare other people that came to visit. They'd say "What's that noise?" and I'd say "What noise? Oh, that's the trains."

It does indeed sound like it needs a new drain pump.

I wanted to provide an update to close the thread. I had the washer exchanged with the same model. The replacement doesn't make any noises at all. The 'load sensing' also takes longer than the previous one with the defect and the drum spins during sensing (old one didn't really sense and turn at all). The defective unit would start sensing, make that weird buzzing/humming noise (which started getting worse compared to the recording) - and then go to washing immediately. Sensing would last a couple of seconds. The new unit senses for much longer and actually turns the drum during sensing. The old one didn't and I though that was normal (never had a front loader). I guess it makes sense in retrospect. This should help the next person that has a similar problem.