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Louie, Technician
Category: Electronic Musical Instruments
Satisfied Customers: 12661
Experience:  25+ yrs. experience in the field and 5+ yrs. online, down to component level.
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I inherited a Yamaha PSR-540 PortaTone organ. It all of a

Customer Question

I inherited a Yamaha PSR-540 PortaTone organ. It all of a sudden quit working after my grandson was playing it. When I turn it on it does pop when certain keys are pressed but there is no sound and the lights to the settings do not light up. What can I do to figure out the problem? I love the sound of the organ, please help.
Submitted: 1 year ago.
Category: Electronic Musical Instruments
Expert:  Louie replied 1 year ago.

Hi Joyce and welcome to JustAnswer,

Thank you for the question and your patience. Should you still need assistance for information purposes only...

Initially, have you tried using a pair of stereo headphones? ...or connecting to an external amplifier/speaker?

Still, please try using "...six 1.5V SUM-1, “D” size, R-20 or equivalent batteries...". This would serve as both an attempt of a fix and as a test by process of elimination.

The above are the only easy user doable tries.

If symptom persist even when using batteries, then it would almost always point to an internal hardware issue.

Are you then considering a DIY (do-it-yourself) repair approach? If yes, do you have access to and familiar with a multi-meter and even a soldering iron?

Equally important, could you make use of the repair/Service Manual or at the very least, the schematic diagrams?