Ever wondered what your BRIO #33214 Freight Battery Engine looks like on the inside? (You do have one of those, right? If not, you should get one, as they are pretty great.) Back in September of 2015, David MacKay opened his up to try and repair what he described as “intermittent operation”, which he traced back to a faulty auto-start/stop switch. This is the green button that sticks out below the undercarriage. David’s blog has some nice pictures of the surgery, as well as a thorough description of what he did.