Yamaha DX11 Repair

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


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Jun 16, 2016
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DX-11 guy in Boston
by: Mo

To Ken: I'm in the Boston area if you still need some service on your DX-11. email mo@virtualmo.com

Apr 19, 2015
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repairs in the Boston area?
by: Ken

Anyone know a place in the Boston area where I can bring my DX 11 for some repairs? Guess it needs, at least, a new battery but I am not that good with wires and electrical stuff....Ken

Have not used it in a few years and it turns on but emits a loud hum when plugged into an amp.

Apr 18, 2015
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anywhere in the Boston area
by: Ken Meltz

Does anyone know a place I can bring my DX 11 [vintage 1987} for a tune up and new battery.? I have not used it in a few years but the battery [internal] seems dead and it is a lot easier to cart around than my 88 key Yamaha....Ken

Nov 02, 2014
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battery
by: Anonymous

U can pay battery in Radio Shack store,battery number 2032

Jun 27, 2014
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Yamaha DX11 RAM Battery.
by: Reinhart

Answer to the comment of June 25, 2014:
After consulting electronics experts, I have to conclude that it is indeed misguided to leave the old battery in when clipping on a new one.
"Lithium batteries can explode when short-circuited"!
(I have been lucky, though; my DX11 still works).

Jun 25, 2014
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Yamaha DX11 battery and equivalence to V2
by: Anonymous

literally almost anywhere. Maplin, Tesco, anywhere with a basic selection of batteries, this little-known place called eBay or Google...

2 more things to respond to previous posts:

(1) Yes, the V2 is the same as the DX11. That was its original Japanese name. The Western division of Yamaha changed it due to association with a bomb made by the bad side in World War II...

(2) The person who advised others to solder the new battery on top of the old one is extremely misguided. I cannot stress enough how bad an idea this is. Old batteries do not just stop providing power: they can corrode, leak, explode, all kinds of things. By leaving it in place for many more years AND using it as a dumb conductor to the new one, you are putting your motherboard at risk - probably more than any basic de/soldering would. It's not hard, certainly enough to justify that.

Dec 15, 2013
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DX11 ram battery
by: laurieboy

I live in West Sussex. Where can I buy a cr2032 3v battery for my DX11? Any suggestions much appreciated.

Oct 29, 2013
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Problem solved
by: Sidfame

@Reinhard / all

I solved the problem - found the solution here:

http://concretedog.blogspot.de/2010/01/replace-ram-battery-resurrectionyamaha.html?m=1

After successfully replacing the battery (with battery holder) the memory was already somehow corrupted.

Resetting to factory settings helped (press the keys 'Edit', '16' and '32' similtaneously) and follow the instructions, details see link above.

Good luck to everyone!


Oct 29, 2013
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Problems after battery change.
by: Reinhart

On April 20, 2010, I posted a comment on an easy and safe method of battery change, avoiding damage due to overheating of elements on the board.

Oct 29, 2013
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No sound and corrupted internal memory
by: Sidfame

Same here. No more sound and corrupted internal memory. However, works as Keyboard as usual.

Any suggestions?

Thx

Sidfame

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?

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!

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 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?

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

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

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 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

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

Dec 22, 2010
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Transformer XD749
by: Anonymous

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

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.

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

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).

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.

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!!!


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.

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