Hi,
I also have a Sony MZ-R70*. I can get it to record but the power supply for it (AC-MZR55) does not power it. Batteries work fine. So, how do I tell if the power supply is dead or is there something I am doing wrong that is preventing it from working?
I did try to hook up a battery tester, using the prongs to try to attach the positive to the inside tip and the negative to the shield but it didn't register when plugged in. I may not have been making contact though. Is there any other test I can do?
Many thanks. If I can't get this power supply to work, I'll just keep using (rechargeable) batteries.
Cheers,
John L
* I also started a thread on a Sharp MD-MS702 MK not recording.