I accidently placed my sony icd-bx112 into washer.

You should put the item immediately into a bowl of rice (uncooked!) and that will soak up all the water. Unfortunately, I think you have probably left it too late.

Hello unfortunately this probably happened a while ago, my recommendation is: A device such as this model probably if you send the unit for repair will be more expensive that getting a new one, but you can try the following: Remove the batteries immediately and rinse the device with distilled water, place the device in a sealed plastic bag with a cup of regular rice or leave the device for a day or two to put the batteries back and try it, if you can get the device to work and you need a replacement check this link may be you can find a better digital recorder for you. http://www.tvps.com/Departments/Digital-Dictation/Digital-Portable-Recorders.aspx
Good luck.