Just got this 1st gen 16GB used. It has some problems. Problem: 1. My ipod has this distortion noise but after being put in the fridge, everything is back to normal. Whenever it gets hot, the problem exist. Is there any fix for this issue? 2. It seems that my ipod can't detect the wifi (greyed out). Tried hard reset, erase all data, everything, but nothing works. 3. I can't turn the ipod off. It always reloaded back on. Please help. Thank you.