Yamaha DX11 Repair

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Yamaha DX11 Repair

Is a Yamaha DX 11 keyboard worth repairing considering the age of the instrument

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Yamaha DX11 Repair

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Feb 25, 2008
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YAMAHA DX11
by: Anonymous

Most DEFINATELY yes!!!! I waited 20 years to find a nice one, eventually found one on ebay for $200, had it shipped to SouthAfrica(in its original box!),had a new 220V transformer put in, I replaced the RAM battery(which obviously was dead) myself and she's now my FAVOURITE keyboard!!!!
It was worth all the effort.

Aug 02, 2009
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How do you replace the Ram Battery?
by: Anonymous

I have been getting the Ram Battery message for a couple of years now, and can't find it in order to replace it. I took it all apart and can't find anything approximating a battery. Any Help?

Also, I have been gigging with it lately. Used it a few nights ago, it worked fine. when I got it out night before last to practice, it won't make a sound. Display is normal, just no sound.

Any ideas to try? I love this thing, I am the original owner, but sometimes it just gives me fits!!!

Aug 12, 2009
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ram battery
by: Anonymous

Replacing the Ram battery requires solder work on the main synth circuit board.

You will need:
basic soldering skills
a decent *grounded* soldering iron
knowledge of anti-ESD methods
a new CR2032 3V battery
a battery socket (~$1 at Radio Shack)

Flip the keyboard over with the keys pointed away from you and remove the bottom panel. There are two obvious circuit boards that reside close to the bottom panel. The smaller one on the right with the plastic flap is the power supply. The larger one at center-left with all the connectors is the main synth board. Remove the connectors and screws and remove the synth board. The battery is in the upper left corner. Note the +/- orientation. De-solder and remove the old battery. Solder the new socket into its place. Slide the new batter into the socket with the + side up. Re-assemble and think about how easy it will be to replace the battery in another 10 years.

Apr 20, 2010
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RAM Battery Exchange.
by: Reinhart

The original cr2032 battery has welded-on contacts for a good reason: shock-proof-ness. Since I apply few shocks to my beloved DX11, however, I invented an easy battery exchange method: solder two short isolated wires onto the battery holder, then solder two "IC-Mini-Pruefklemmen" (Conrad Elektronik; English: "test clips"?) to the other ends of these wires and clamp the new battery onto the contacts of the old one (which stays in).

May 22, 2010
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Replacing RAM Battery
by: Anonymous

Does anyone know of a place in Southern California where I can have my battery for the DX-11 replaced?

I don't know very much about electronics and soldering.

Also, I have a Mini Moog which just powers on, with no sound.

Thanks you in advance for your advise.

Barry
saperstein@justice.com

May 23, 2010
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Can the old RAM battery stay in?
by: Reinhart

A month ago, I replaced the battery as described in my previous message above (April 20, 2010). Today my DX11 still works.

Dec 22, 2010
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Transformer XD749
by: Anonymous

Anyone know where I can buy a trasformer for the Dx11? Transformer XD749

Jan 01, 2011
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Replace a black key and a function key
by: jtl

Almost there with restoration. Replaced the RAM battery last week no problem. Now I have a broken black key (4th key in from left - D#) and a function key (number 24). Does anyone know how to replace them? and where to get the new ones?
Thanks
jtl

Mar 01, 2011
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Dx11 repairs
by: retro Tim

Hi Everyone !

I have a Yamaha dx11 with a couple of minor faults. Firstly the notes seem to have a permanent 'wobble' to them and the modulation wheel has NO effect?, also i need a new 'black key' will it be easy to replace??

Kind Regards...Tim

Mar 02, 2011
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Unwanted wobble.
by: Reinhart

A few years ago, there was an unwanted wobble in the sounds from my DX11 at an unfortunate moment, namely during a classroom demonstration. Suspected origin of wobble: The various electronic units connected together (DX11, music amplifier, oscilloscope) were not fed from one single 220-Volt AC source, so there were ground loops.

Mar 30, 2011
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PSR-500
by: WILLIAM TAYLOR

I have one note that is too loud.It's the G above middle C

Oct 05, 2011
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Yamaha DX11 Data Battery Replacement
by: Anonymous

Thank You So Much for your explaination on how to
replace the battery, It is working great now too.

George Reed

Dec 05, 2011
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DX11 battery replacement
by: JohnnyV

I replaced the battery on my DX11 and moved the battery moubnt to a location with easy access. I tested the battery, leads and continuity on the circuitboard and all checked out OK including the polarity. When I power up the unit, it still says replace ram battery. Also if left unpowered for several hours the tuning goes out.

Any sugggestions?

Dec 21, 2011
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no power
by: jason

hi,just bought a v2 on ebay, are they the same as a dx11 and if so can any one point me in the right direction please? theres power going to the board and the fuse isnt blown and there is no screen no sound and signs of life, any support would be appreciated :)

Dec 30, 2011
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No sound!
by: Hammer

Hey everyone!
I replaced the battery of my dx11 and now there's no sound, did anyone solved this problem?
I really don't know what to do anymore..
Please help me!

Jan 13, 2012
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Corrupt voice ROM
by: Geoff

Dug out the old DX11 and replaced the RAM battery, which now passes the test. However the internal voices are corrupt. Attempting to initialise and copy them into RAM fails (NG status). I'm guessing that the 27512 EPROM with the voice data has become corrupt. Does nayone know if there is an image anywhere that I can use to blow a new EPROM?

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