Nintendo DS Lite Console "put green rubber band back" Questions

...green. It was working just fine one minute then it wouldn't turn on again. We've had it for about 13 months and it's always worked properly. All the parts are original. Any ideas of what could be ...

...put the powerswtch face on and turn it on 80% of the times u get green striaght away if u dont then leave it powered on check it after a few minutes make sure BOTH heat sinks are geting hot and leave ...

...green board carefully . 3 unscrew any screw under the disc tray and remove this disc tray , step 4 get a rubber band a small rubber band and replace the band thats slipping put your dvd drive back ...