greetings! i am new here so forgive my newbie-ness. i am repairing a mini model a1103 for a friend. there is no sign of power from it at all. the power supply and cord have been tested on another mini and work fine. so i pull the thing apart and find the pram battery dead. long story short, when i install a new battery (lithium cr2032 as specified by apple) i can watch with a multimeter connected to the battery as the voltage drops like seconds on a clock. i have wasted several new batteries. WHATS UP?