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Yamaha P80 broken DC input jack

I have a Yamaha p80 Keyboard. A little while back the DC connector started getting loose, so I had to have the plug sit a certain way. Someone ended up bumping it and it is not turning on now. What part do I need to fix it?

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  • Yamaha Master
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Probably the jack is still OK but broken from the circuit board.

If it is OK, one needs to use a bit of epoxy to hold it in the correct place and solder jumper wires to replace the EXPECTED broken circuit board traces.

The jacks are readily available, often at Radio Shack or for certain at Digikey.com should the connector be mechanically damaged rather than just seperated from the circuit board.

Posted on Apr 23, 2010

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Posted on Jan 02, 2017

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1 Answer

My Yamaha electric piano, P80, will not power up


first - check the power supply if it's really giving power.
Get voltmeter or plug it to something else you know it's working.

If you are sure it does and still nothing, you need to check the fuse inside the P80. I've been there, it's not so hard to open it
(from below of course)

BTW, it's advisable to user surge protector on such delicate devices like computers and keyboards if there are any fuses that have blown. I can't tell you how many times a blown fuse has stopped equipment from working. I had a blown fuse go in a microwave oven a few years back. I called a repair guy while on a job to fix my Leslie (many years ago) and the culprit, a blown fuse. I could have fied it myself if I had given it more thought.

Check the internal fuses first and you might save some money and a trip to a repair center. , sometimes a fuse can look good even when it is blown. If you have a voltage tester do a continuity check on the fuse just to be certain.It's possible that the P80 does not use internal fuses especially since it uses an external 12 volt power pack There might be info on the fuse in the P80 manual. Otherwise try Yamaha support. A lot of low volage gear run of AC adaptors is unfused.

Another possibility is that the power connector or switch on the P80 is broken. DC power jacks are liable to get broken solder joints due to movement, especially if they are circuit board mounted and not chassis mounted. If you know what you are doing test the connector and switch with a multimeter.

If they are good then also check the wires from the switch to the main board. They a probably connected with a plug, which itself can come lose.

You can test for bad connections with the power off. Only test with the power on if you really do know what you are doing! You won't electrocute yourself but you can easily damage the keyboard if you are not careful.

Unless you are experienced in electronics repair that is as far as you should go.

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1 Answer

Yamaha piano, P80 will not power up


Purchase a new power supply.

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No sound at all.


I assume this is the P80 I just answered?
If so, it appears this instrument needs to be connected to an external amp or headphones and has no speakers built in. Contact your dealer to be sure.

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Dgx 230 dc in connector bad


This type of keyboard is well know for the power socket breaking away from the main PCB. You will need to unscrew lots of screws to reveal the circuit board with the power socket on. If you look closely at the solder side you will probably see that the track that the socket is soldered to has broken. Simply link the solder joint to the circuit further along the track by bridging between socket and next point along the track. You may need to replace the socket if it has become damaged. If you can use a soldering iron it is fairly easy but if in doubt contact a repairer.


If you need a socket Google :

Yamaha PSR power socket ( KPA3 / PA130UK / EPA3 ) (LB30226R)


Yamaha PSR power socket ( KPA3 / PA130UK / EPA3 ) (LB30226R)

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Yahama PSRE413 Keyboard DC Adapter Issues (1): First try battery power to ensure Synth works.
If it does, problem is most likely near DC socket, or socket contacts dirty / worn.
(2): Get a contact-cleaner spray (Servisol, McKenic, Kontakt, etc) and squirt into socket, then plug / unplug / twist DC plug to 'scrub' the contacts.
(3): Get a qualified tech to manually apply DC to the PCB solder-points which will verify if socket is faulty.

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Some keyboards use the amp output sockets for headphone use.
You might need some adapters for your headphones.
If it fell in, you would see an empty hole. This would be unlikely because it is held on by two screws. If all fails, buy an amp with a headphone jack input. Plug the keyboard into the amp and use the amps jack.

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The solder at the connector may be broken loose or a circuit board could have a crack OR the jack may be broken... this is a common problem because the users trip over cables yanking the jack sideways. Take in for repair if you are not electronically adept.

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How to remove key from yamaha p80 electronic piano


This pertains to the white keys. If you need to take out a black one, you MUST remove the white ones alongside the black one first.

You push the back end of the key forward (takes a little bit of force) and then lift the back a bit to dis-engage it from the back rail. There is a flat spring under the key. Note how it sets in place.

When re-installing make SURE you get the front of the key engaged with the little lever before attempting to push it forward and down to re-engage the back in the rail.

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