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Drumulator : Repairs
Overview The Drumlator is on quite a reliable drum machine, with few mechanical parts and a robust electronic design. The main problem areas are the PSU, the LCD and sliders and buttons.
Warning Please only attempt a repair yourself if you are competent at servicing electronics, use a service centre if in doubt. The Drumulator is easily damaged or the case melted by amateur attempts at repair.
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 Missing or Damaged Slider Knob
The Drumulator has one slider knobs which can be easily lost or damaged.
They are available from Farnell at www.farnell.com
part number 766756.
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 Missing or Failed Small Push Buttons
The Drumulator uses a small momentary push button for
most of the controls. After 15+ years use they are beginning to wear out and even with cleaning still don't work immediately. They are easily replaced with new buttons made by E-switch and are available from www.digikey.com in the USA..
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Colour
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Digikey Part #
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BLUE
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EG2556-ND
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RED
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EG1325-ND
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BLACK
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EG1321-ND
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A full set of buttons will cost around $50, and you can choose from a range of cap colours to customise your Drumlator. You will
need to desolder the old buttons carefully.
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Large "Pad" Buttons Replacements can be bought for US$11 from EPR Electronics in the USA.
www.eprelectronics.com
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Potentiometer Replacement
The Drumulator uses two front panel potentiometers which tend to grind a bit after 15 years use. They can either be cleaned or better still replaced by a higher quality 10k Log potentiometer. We use nice Bourns Conductive Plastic models with new knobs.
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Power Supply The power supply is getting old by now and failure is not uncommon. One of the rails may go out of specification. Replacement PSU's are not
available, so the best option is a service centre repair, especially as its not a separate unit but built into the main PCB.
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