I was given a Dreamcast by a friend of mine. He told me that it sometimes would read discs. Upon trying it out it did in fact read one. I then turned it off and came back to it later on and it wouldn't read. It would make a rev up sound and then stop. I decided to open it and try to calibrate the laser like so many youtube videos suggest. I tried it out and it worked great. Played for a few hours with no problem. Next day I went to play it again and was back to the same problem. I have found that before I start it up, I need to push the laser back from the inner resting position for it to work at all. Is there an adjustment I am missing? It seems like laser is getting stuck when its all the in.