Olympus DM-20 Hi Gents, My recorder suddenly will not turn on, even after replacing batteries. Not aware that it was dropped or anything unusual. What would it cost to repair this unit? thanks Paul 305-470-2201

First question batteries in correct positions
second did you do product upgrade

http://www.olympusamerica.com/cpg_section/cpg_support_product.asp?id=921

this is a link to software update

did you know that your recorder has usb connection
now most usb connected products usually have chargible battery's and some can only run with particular chargible battery i would try new propper chargible batterys and then dock to the usb station it should show the battery charge output and input you might have some chance fried your recorder by putting in non chargible battery's

there are places that exchange recorders but never heard one that repairs them you might want to take back to where purchased and exchange for new