I think the inside latch mechanism that hold the door in locked position is hidden inside the front cover. Remove the front cover with speakers and understand the door locking mechanism and the lever involved with the closing of the door. Put the front cover back carefully making sure the latch is now clear to lock with the door.
I can take pictures maybe someone here can see the problem.
I never touch the door en the mechanism seems alright but what i know im a newb.
The door is automaticly open en the eject knob push the little black thing up and down.
If i push the door bij hand and push the play button it is verry hard if i keep the door open and push play no problem.
Im heart broken this boombox means a lot to me :L
If maybe someone can take pictures of his/hers crown 850 en compare maybe.
I wil take pictures and place them here.
Thanks for you're message.