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Power will not go on after machine was dropped. Plastic was broken broken on the top of the device near the power connection but the circuit board appears to be undamaged.

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The board may appear undamaged, but the instrument's behavior says something is broken. I have no idea what kind of musical instrument this is, but circuit boards are all the same.

Especially on boards with narrow circuit traces and surface mount parts, damage can be very hard to see. A trace might have a hairline break which would be impossible to see without bright light, strong magnification, and some idea where to look.

It's also possible that the board is fine, but some part has been damaged. The lead from some part may have broken away from the circuit trace, for example. Or a small surface-mounted component may have popped off completely or had a lead broken off.

Unfortunately, this kind of trouble is very hard to fix without detailed product information (circuit diagrams and board layout). Unless the manufacturer makes a service manual available to the general public, this means sending the unit back to them or an authorized service center for repair.

Posted on Feb 03, 2010

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7 Answers

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