Emerson EWC13D4

Pauses a couple of seconds, and then pops back out?

I had a reverse case - wouldn't stay OUT.

If the end of travel sensing fails to operate, the motor remains
powered. If the motor remains powered with no movement, anti-jam
protection reverses it.

The sensors may be optical break or contact, depending on the drive,
and probably just dirty - or maybe a dry/broken solder joint.

I actually cleared it on my old 2x CD-ROM (long time ago) by blowing
very hard into the underside edges of the tray - where the sensor is
likely to be.

The door switch contacts located under gear on side of unit needs adjusting or cleaned. these contacts turn on cd motors. cd will not work until contacts are working proper.