MastTech MS8229 beeps all the time

Hi I own a MS8229 multimeter for a few years now. It works fairly well except the one (super annoying) thing it does is it beeps whenever it is turned to a current/voltage/resistance measurement. It doesn't matter if the probes are plugged in or not. The beep differs (deeper beep) if the probes aren't plugged in but then it's a high pitched beep when they are removed. The beep goes away if I change it measure lux/audio, etc…

So wondering how/if this can be debugged. I'm also thinking to disconnect the speaker as it's terribly loud. Is there a suggestion one what I can do to fix this? I'm thinking of clipping the speaker but that seems like a worst-case scenario. I'd hate to throw this device away.