Dvd Doesnt Stop To Open All The Time! Options

[NaN]

The situation its as follow:
-I received my XBOX from Techincal support office with no repair because they said i openned that. Well that was truth, so I tried to fix it myself.
-I opened the xbox360 and replace the X for crews(one popular mod), I also check the motherbard with tha hair dryer and I also installed the coins mod....I also installed a 6 cm fan, directly to the MD(12v) but stop to work after some minutes, i think it got broken.
-Thats fine, i wicthed on with all close and the DVD doednt stop to open and the LED(in between the 3RL) dont stop to blink.
-The 3Rred ligths are still there, but that is not my real problem now, my real problem its the stupid DVD dont stop to open.
-If I close manually, the DVD start to do a lot of noise, like triying to read something, but its nothing inside....
-I thougth maybe during the transportation the xbox got broken, but I swicthed on before open the xbox to check if the 3RL wee still there....and sure they were.

So look like I did something wrong during my modifications.
What could be? I didnt touch the DVD for anything, so changing the dvd wil not fix the problem, i think the problem could be in the MB...
Any idea?

Thanks in advance.

[pimpmaul69]

you said the fan stopped working wich overheats dvd drive and fries chip on dvd drives circuit board