Yamaha Portable Grand NP30

by Richard
(Oak Park, IL)

Will not run on (fresh) batteries. Is this a common problem or do I have a lemon?

Comments for Yamaha Portable Grand NP30

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Apr 05, 2010
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Yamaha NP 30
by: Alfred

Dear Richard: The suggestions resulting from posts in this Forum are proof we can work as a team, and I hope both you and Tim will continue to be "regulars" with your contributions. Another gentleman friend of ours, Dick Rector and I have been encouraging members to join in the activities and help us grow. Please do not hesitate to post your valued comments/questions. We will all learn in the process. Keep well.
Regards. Alfred

Apr 05, 2010
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Thank You So Much
by: Richard M. Schmidt

Thanks to all. I will get it fixed and the information that you have provided will allow me to have an intelligent conversation with the tech. I find your site to be very helpful. Thanks again.

Apr 05, 2010
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Yamaha NP 30
by: Alfred

Dear Tim: Thanks for the follow-up. Hopefully Richard will read it and find he has the same problem. Your unit is quite new, and I'm surprised the "cut-out contact" failed so soon. This is usually a common problem with keyboards after prolonged use and unintentional abuse resulting from some "wiggling" when inserting and removing the Adaptor Plug. Anyway YOU DID THE RIGHT THING. Opening the keyboard to replace the Jack is normally a job for a qualified technician as the "feet" of the Jack are small and require spot soldering when the component is replaced. Keep well.
Regards. Alfred

Apr 05, 2010
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I was Anonymous
by: TiM

Tim
Belgium

Apr 05, 2010
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Issue solved
by: Anonymous

The problem was a broken power jack.

When you plug in the power cord, it moves a contact for the batteries away from the side pin.
After a while these get bent out and do NOT contact the pin when the power cord is removed.
Hence, the batteries don't get connected.

With a bright light you probably can see the contact in the jack on the unit and you MAY be able to bend it with a prod.

But in my case, they replaced the entire power jack input.
I paid 5 euro's or something, wasn't expensive :-)

Regards,
TiM

Apr 01, 2010
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Yamaha NP 30
by: Alfred

Dear Richard and Tim: DO NOT ATTEMPT TO OPEN AND REPAIR THE UNIT YOURSELF. It could be that this is a manufacturing problem with NP 30's. I know not whether you have any valid standard warranty or servfice warranty. Nevertheless, if the unit works with an Adaptor and not with batteries, there is a possibility that the circuit for the batteries is defective. Contact a qualifieed technician for check and repair if such is the case. Your followup input will be much appreciated. Thanks and regards to both of you.

Apr 01, 2010
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Batteries
by: Tim

Richard,

same here !

With adapter everything works fine, batteries ( new ones) won't do a thing.

Is not a huge prob (since you have an adaptor).
But it's strange.

I have the same problem :-)

Best regards,
Tim
Belgium

Apr 01, 2010
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Yamaha NP 30
by: Alfred

Dear Richard: In my response of yesterday, rean "Unless....." instead of " Depending on the condition....." Thanks.

Mar 31, 2010
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Yamaha NP 30
by: Alfred

Dear Richard: While I'm not familiar with the NP 30, its specs say you have the option to use Batteries or an Adaptor. Yamaha portables usually have this feature, but you should know
1) These two energy sources work through two independent circuits. 2) If an Adaptor is used it automatically cuts off the Unit's sp[eakers. 3) The NP 3 is a 2007 Yamaha release, and as such it is relatively new. 4) There is no reason to consider your Unit is a lemon. Depending on the condition of the Battery Contacts (in the Battery Compartment)if dirty or oxidized,you should not have the problem you cite. Clean the contacts and try again. 5) If the Jack (entry socket)for the Adaptor Plug in the unit is distorted/oxidized, it will cut off the speakers. 6) Buy a Yamaha PA5 D or Yamaha PA 150 Adaptor and try energizing the unit through the Jack(5). Get back to the Forum if these hints do not solve your problem. Thanks. Keep well.

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