HF sorry for being pedantic but I spotted some anomalies of your description of the MEL this is not approved by the manufacturer but the MMEL (Master) is, the operator will then "customise" the MMEL and have the relevent NAA to then approve what becomes the MEL. Also there are not any items within an MEL that have unlimited times of repair the longest a defect can be carried is a "D" category MEL which has a 120 day limit.