I have a Bosch Axxis WAS20160UC/23 front loading washing machine. I started smelling something that was hot. Couldn't tell if it was electrical or rubber. There was a popping noise and it quit spinning. I loosened the back panel and the drive belt seems tight. When first manually spinned the tub, it sounded like there was something rattling underneath. Now I don't hear that. I am doing this on my phone, so I can't see everything I have typed so I hope it makes sense. Any ideas?