Fix your broken NDS/DS Lite's slot 1 cartridge socket with this brand new slot 1 replacement.
Slot 1 on the NDS/DS Lite is the top slot for DS game cartridges. If yours is damaged (possible symptoms are games not ejecting correctly, consistent read errors over different games, games ejecting of their own accord), you can replace it with a new slot 1 cartridge socket and save yourself a lot of money on buying a brand new DS Lite.