I bricked my Dreamcast

[simfan]

So I put it back together.

Now when I turn it on the drive starts spinning immediately whether or not the lid is open.

When you put the top case back on, always have the drive door open, otherwise you can break the lid switch.

Sounds like you have other problems but to save possibly damaging another drive, this should always be noted.

As others have said, the best method for troubleshooting is to component swap with another known good unit. My first guess though would be the random reset problem caused by the motherboard power supply pins corroding over time. An easy fix, just need to clean those pins (easily find guides for this). Did the machine load games after the black screen, before you took it apart?

Although that doesn’t explain a whiff of smoke.

Thanks, I will keep the lid open when put it back in future. Did not aware this before.