I found this on the [link|https://support.bostonacoustics.com/app/answers/detail/a_id/7202/kw/Solo%20volume|Boston Acoustics website|new_window=true]:[br]
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It sounds like your radio has had its hospitality mode activated. The hospitality mode is a mode which is often used by hotels or similar establishments who wish to set a maximum ***''volume''*** limit on the radio. To remove this ***''volume''*** limiter, follow the steps below:
* ''Turn the unit on''
* ''Turn the ***volume*** down to minimum, 00 ***volume***''
* ''Press and hold power for 10 seconds until ***volume*** numbers flash''
* ''Turn the ***volume*** back up to 50 (max ***volume***)''
* ''Press power again to verify new max ***volume*** position''