I am using windows 8.1 and am trying to pair it with Jensen cd 560 it is already paire nd the volume control on cd 560 is turned up and it is set to Bluetooth, some times blue toothworks and I get sound and the other times it does not, what could I check, I go to control panel, harfdware and sound, devices and printers, and click on the cd 560 and it says the device is working properly.