Ok I have got 2 boombox for a wile now and never have a issue so from one day to another it start giving me this problem I could figure out what could have changed so one thing i noticed that i have both speakers conected to Bluetooth on my phone even if i turn off the Bluetooth on one problem continue but when i forget one of the speakers on my phone the problem disappeared immediately this fixed my problem now I can listen music of the Bluetooth whit out auxiliar giev it a try