Probably too late for Jorge, but a company in CA replaces video cards on these Macs. I’ve used them successfully. I shipped my 2009 17” to them from NY and it was returned relatively quickly working as before. And surprisingly inexpensive.
DT&T Computer Services Inc.[br]
3095 Osgood Ct. Fremont, Ca 94539 [br]
support@dttservice.com
http://dttservice.com/macrepair/index.php/mac-repair/macbook-pro/unibody-macbook-pro-repairs-upgrades.html