原帖由： Marie Seltenrych ,
I have the same problem. Last week I was given a replacement keypad by Apple and it worked for 5 days with its original batteries. Yesterday, all keys stopped working except arrow keys (I can still play Pac the Man) I bought a cheap $9.90 keyboard made in China at Target the same day I brought my keypad back to Apple, as backup. That is what I am now using successfully. How odd is that? It uses 3 AAA batteries. Apple have since designed a new wireless keyboard with recharger inside instead of battery power. I think they know something about this wireless keypad less than 1 year old that I purchased with my Yosemite imac retina for a lot of money. This has something to do with blue tooth connectivity. My foreign board is all plastic, not metallic.