If the Roland R-05 WAVE/MP3 Recorder does not power on, check the following in order to find the cause.
- Slide the [POWER/HOLD] switch toward POWER for several seconds.
- Disconnect any adaptor and install two new AA alkaline or nickel-metal hydride batteries with the correct polarity. Lithium and other battery types are not supported.
- If the R-05 powers on with batteries, the adaptor is the likely cause. Only the PSB-6U AC adaptor and the UDC-25 USB DC Power Supply Cable are supported. Check that all cables are firmly connected, and for the UDC-25, try a different USB power adaptor or computer. Turn off the power before connecting or disconnecting the adaptor.
If the R-05 does not power on with new batteries, the unit itself may have malfunctioned.