i'm not at the level of experience to rip apart and build or fix a laser module. I have a dual Marconi 650nm @ 225mw and one of the modules is running VERY week! I see he went in for a surgery and now i'm looking for someone who can take it apart and replace the diode. hopefully it goes in this catagory since it involves internals ...if not can the moderator please move thread to appropriate area.