Piano, Organ, and Keyboard/repair Weber Digital Grand 930

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Question
I've had a Weber DGP 930 for about 20 yrs.  Lately, it has been turning off by itself for a few seconds and then coming back on.  It is something electrical (almost as if it's a short). I know it's not the wall outlet, as I have switched it several times and it still does it.  When it starts to go off, I can hear a humming noise.  I can tell it's getting worse because it is happening more frequently.  Any ideas what might be causing this.  Thanks in advance for your time.

Answer
Hello Jay!  I think the tip off here is the hum you are hearing. Because of the age of the instrument, I suspect a power supply problem and specifically the relatively large electrolytic filter capacitors.  Their job is to filter out hum.  These capacitors can become intermittent and begin to short, open, cause shutdowns, blow fuses and even cause damage to the rest of the circuitry.  There may be a problem with the rectifier as well, but I'd consider changing the capacitors out first, then see where you're at.  

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Thomas Britanyak

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I am a full time organ/piano technician who has been actively involved with the design, building, repair, maintenance and installation of organs and pianos for 35 years. I began as a keyboard instrument apprentice and hold degrees in music and electronics. If you need a piano's date of manufacture, please go to http://www.pianoexchange.com/howold.htm or http://www.bluebookofpianos.com/pianoage.html I am happy to answer musical or technical questions, however, I CANNOT offer appraisals on pianos or organs. Please do not ask what an instrument is worth. For this service please contact an experienced local appraiser or try the following links: https://mmm1100.verio-web.com/blueb1/appraisal.html or http://www.57piano.com/questions.htm

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I am a full time organ/piano technician who has been actively involved with the design, building, repair, maintenance and installation of organs and pianos for 35 years. I began as a keyboard instrument apprentice and hold degrees in music and electronics.

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I am a full time organ/piano technician who has been actively involved with the design, building, repair, maintenance and installation of organs and pianos for 35 years. I began as a keyboard instrument apprentice and hold degrees in music and electronics.

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