Question about Yamaha YSP-900
I cannot know any specific answer but presuming that you have power at the wall socket (don't laugh sometimes it is that easy) a piece of electronics will not work because voltage is not getting to the circuitry inside. The most logical place to look is at the fuse but too often these days that is buried inside the unit and may be soldered on a printed circuit board. It is presumed that users will not fix anything and its certainly cheaper to solder one in than provide a fuse post externally . Clearly in such cases you must open the unit and check. If there is no fuse or the fuse is good it will require an electronic tech to trace the problem further.
Posted on Jul 03, 2009
I believe you will find this is down to capacitor rot. The capacitor on the power board labelled C515 will have degraded and failed. The same thing happened to both my HTY-750 and YSP-900. I have fixed both units with a replacement capacitor from Maplins (in the UK) costing 99p. It takes about an hour and you will need to unsolder the old capacitor and re-solder the new one. Very simple and you don't need experience to do this.
Here's a step-by-step guide to how I fixed my HTY-750, but I promise you from experience that while the dismantling and assembly are different, the power boards are very similar and the capacitor is easy to spot and deal with.
Posted on Dec 19, 2014
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Posted on Jan 02, 2017
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