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I just received the universal adapter, and it's working perfectly! Yeah! Thank you everyone for all your help!

First of all, thank you for all your help. I just checked my adapter... it's definitely an adapter problem. I can't believe I missed it.... Basically, I bought the player many years ago oversea... so the adapter is a 240V input adapter... hence, didn't work when I plugged it into the wall outlet because the voltage is 110V where I live. Do you suggest I buy a voltage converter for the adapter or just buy a regular 110V adapter? I checked the original Sony 110V adapter for this player and it's really expensive. What do I need to look for if I am buying a regular 110V adapter for the player? Input voltage, Hz, watt? Output voltage, amp? DC or AC? Does it matter if it's a no-name brand adapter? Would this adapter work fine with the player? http://www.ncix.com/products/?sku=26601&am...ufacture=Others Thanks.

I have an old Sony MZ-R55 MD recorder that I've bought a long time ago but haven't used for a while. Recently, I brought it out and tried to use it to record something using just the AC power from the wall outlet. But when I plugged the adapter cable into the recorder, the screen kept flashing and eventually ended with a "Low battery" message. I tried to recharge my rechargeable battery by pressing the "Stop/Charge" button with the AC adapter plugged in, but the screen didn't display any "Charging" message. Why couldn't I just use AC power to power the recorder? Do I need to put the rechargeable battery in the recorder in order to use AC power for the recorder? Do I need to replace my rechargeable battery to use the AC power to power my recorder now? How much does it cost in estimate to replace my rechargeable battery? Any help will be greatly appreciated. Thanks.