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uLCD-32PT(SGC) High pitched noise

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  • uLCD-32PT(SGC) High pitched noise

    According to my 25 year old son my uLCD-32PT(SGC) display is producing a loud high pitched noise, I cannot hear it , I am using the wav file play function on startup , could it be coming from this or the backlight osc ?

  • #2


    It will probably be the whistle from the PWM. Read the description in the manual for more information.

    The PWM is left on after a wav file is played as it is assumed you will be playing more files and the 'click' that can often be heard at the start may be annoying.

    If you use the STOP option it will turn off the amp and hence silence should ensue.
    Mark

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    • #3


      Many thanks I have done as suggested, i need to get son to come and listen !!!

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