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Power failure ysp-1 - Yamaha YSP-1 System

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Please check this link for tips to repair the SMPS unit:

Posted on Nov 05, 2010


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Posted on Jan 02, 2017


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Yamaha ysp 900 will not turn on,occasionly will come on if power socket is switched on and off rapidly,it will then just stop working randomly..

There are several reasons that can cause the power transformer to fail. The most common reason in Yamaha's experiences is overheating. When a transformer gets too hot, a heat sensitive device called a "thermal fuse" opens up. This renders the transformer useless and it must be replaced. All Yamaha products sold by our authorized dealers carry an Underwriters Laboratory or CSA Certification. This UL listing assures you that the product is completely safe to use when operated in accordance with your owner's manual. And should there ever be a failure within your unit, it will not shock you or catch fire or present any hazards to life or property. The thermal link in your transformer is a requirement to obtain the UL or CSA listing. This thermal link opens up instead of having your transformer catch fire or cause potential electrical hazards. Your amplifier should not have anything placed on the top of it, covering the vents. These vents need to be left open as that is how the unit cools itself. If your amplifier is in an enclosed cabinet, air movement could be severely restricted. Consider a small cooling fan for increased air circulation. Never remove the feet from the bottom of your unit, as there are ventilation holes on the bottom of your unit as well. Another reason for power transformer failure is a continuous heavy current draw through the unit over a prolonged period of time causing excessive heat buildup within your unit. This could be related to the impedance of the speakers you are using, the level of the volume control, and how many speakers you are using at one time. You can only use 1 pair of 4-ohm speakers, or 1 pair of 6-ohm speakers, or 2 pair of 8-ohm speakers. Any other combination or types of speakers that you are using other than what was just mentioned could lead to premature failure of your amplifier or power transformer. In addition, do not turn your volume control further than the halfway point. If you are doing this, you run the risk of damaging your amplifier or speaker system. (See Why Do I Keep Blowing tweeters/Midranges, And How Do I Prevent This From Reoccurring?). If the level of sound is not high enough for you when the volume control is at the halfway mark, then we recommend that you obtain a larger power amplifier. If you are going to evaluate the purchase of a larger power amplifier, you should choose one that has about double the power of the amp you are currently using. And be sure that your speaker system is capable of handling the power of the amplifier you are considering.

Jan 26, 2011 | Yamaha YSP-900

3 Answers

I get a loud static noise, when I first turn on the yamaha ysp-1. Lasts a few seconds. Have unplugged all inputs. Problem persists.

u have a cool sound projector but u have a baaaad power supply system. bad power supply design - u will get all sorts of noise when u power it up. i have a sub woofer with the same problem(which in my case is the way it is designed). i used a delay circuit. but in ur case i know YSP-1 has a clean start up. so, if the warranty still covers it get it replaced. static noises, pop noises are often caused by bad capacitors.  

Mar 12, 2010 | Yamaha Digital Sound Projector Home...

2 Answers

Power became intermitentnow no power whatsoever changed the plug/fuse but no joy any suggestions

Replace with a 22nf capacitor - Maplin part number N38CN -
the new maplin part has a higher voltage rating and is bigger. it will need to be fitted with the leads extended with wire to get it to fit.

Jan 18, 2010 | Yamaha YSP-1100 Digital Sound Projector...

2 Answers

Suddenly the unit has failed - no power at all.

I have the same problem, fuse ok, plug ok and internal fuse ok. Sent it to reccomended engineer he said it cant bre fixed. only 3 year old, not happy

Sep 28, 2009 | Yamaha YSP-800 System

1 Answer

Ysp1000 wont turn on with power switch or remote can you help

Replace with a 22nf capacitor - Maplin part number N38CN
the new maplin part has a higher voltage rating and is bigger. it will need to be fitted with the leads extended with wire to get it to fit.

Jul 10, 2009 | Yamaha YSP-1100 Digital Sound Projector...

1 Answer

Ysp-1100 clicks when power is pressed but does not turn on.

Sounds like a a pcb dry joint or a poor connection on a multiway plug / socket.

try removing and refitting all the pcb plugs - better still spray carefully with WD40

Goog luck, Gaz

Jun 21, 2009 | Yamaha YSP-1100 Digital Sound Projector...

2 Answers

Power Subwoofer doesn't work

Two possibilities:
1. Your source material does not contain bass frequencies.
2. Your SUBWOOFER SET - BASS OUT is set to Front, rather than SWFR (subwoofer). See page 63 of the manual.

Let me know if that helps.

Apr 19, 2009 | Yamaha YSP-900

2 Answers

YSP: Need remote code for TV Sony Bravia KDL-46W4500

I have the sony KDL 46 EX720 and got the code 2751 to work.

Jan 19, 2009 | Yamaha YSP-1 System

1 Answer

Yamaha YSP1

We have the same issue. I owned the unit for about 2 1/2 years before it quit working. The Yamaha YSP-1 has been sitting on my shelf for the last 2 years now collecting dust. If anyone finds a solution, please let me know

Dec 22, 2008 | Yamaha YSP-1 System

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