I think its the ds-300 stop and go that I have...not going outside to look right now. anyhow sometimes the beep for fast lap gets stuck on. It happened ten times in a row today! What could I do to disable the speaker? Should I remove a wire from the speaker? or put in an on/off switch for the speaker because I pressed the button and the sound went off and I waited a few laps and pressed the button again and it got stuck again. Could the speaker be switched with a light if the tones are required for programing the different modes?


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