DIY synthesizer keyboard repair

In detail: do-it-yourself synthesizer keyboard repair from a real master for the site my.housecope.com.

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Of course, the keyboard suffers the most from user actions.A spilled cup of coffee and an unstuffed cigarette, pets, all sorts of small objects that have fallen under the keys, in general, there are no reasons to count. As a result, it is good if one button simply does not work, worse if it is stuck, preventing the computer from starting. This trouble always happens at the most inappropriate moment, therefore, instead of acquiring a new one, we will consider how to help the trouble on our own.

Arranged computer keyboard not difficult, controller board located where the cord is connected, and the indicator LEDs are soldered on it. Further through the contact pads the board connects with film, on which conductive material is applied conductor tracks and key pins.

For renovation need first unscrew all the screws, if you are caught different in length, mark the places with a marker. Having disassembled remove the fee controller and inspect for damage. The microcircuit itself is filled with compound, its repair is not possible, but fortunately the liquid does not get there. Inspect the cord carefully at the point of attachment to the body, it may be bent and torn off. Then you need to cut off the bend and solder back to the board wire by wire by colors.

Coffee rarely gets between films, mostly collected by sticky liquid in the nests, remove the sticky keys and pwash with soapy water... If, nevertheless, the liquid has reached the conductors, you need to be careful separate films and rinse with alcoholusing a cotton swab. Over time, conductors can oxidize, their recovery is also possible. For such purposes use conductive adhesive or a more convenient conductive marker... Look at an auto store. This is preceded by a rather painstaking work - checking tracks for breakage... Found a place aboutwe clean with a student eraser and alcohol, restore the conductor and wait until it dries out.

Really home recovery method conductors, this is the use of a pencil with a graphite rod. The process is time consuming and time consuming, but it also has the right to use. We take soft pencil and under the ruler we begin direct dangling paths. The resistance of such a conductor will be high, but this does not bother the controller and the functionality is restored.

When assembling inspect the elastic bands located under the keysif broken, the key will not return. Cut off the ring from the rubber tube and place it over the defect.

So that such troubles do not bother, tothe keyboard needs to be cleaned regularly... It's easy to do, flip your keyboard over a piece of paper, I think you will be unpleasantly surprised. With the computer turned off, clean the keys with a vacuum cleaner, rinse the surfaces of the keys with a swab dipped in detergent. Position the keyboard so that the cable is not taut.

Who can tell where the Yamaha PSR-630 synthesizers are being repaired? Please drop the coordinates.: Confused:

I also have a bunch of problems with this key, although it practically did not work.

Vokalmen, do you by any chance want to sell it for spare parts?

The spare parts are for nothing. Better to be a midi keyboard.

Tatul, what exactly is wrong with him?
If the mechanics - the keyboard, there, junk, - there is a MAZ to do it yourself. If the chip flew out, it’s cranky, it’s cheaper to buy a new one.

Most likely there is an output amplifier. There is no sound from the speakers and on the linear one too. Maybe there is some kind of transistor or a microcircuit? And the rest turns on normally on the display, everything shows as it was before.

Where can I change the display? It's very hard to work blindly! (Moscow)

Vanda,
you will most likely not find a separate fee. They are not sold separately for cheap models. Moreover, the 330th has long been discontinued. If I come across the same pit for sale, I will unsubscribe to you.

For 7 years, the repair technology has changed, try to give it to a good dear master.

Parts for Yamaha can be ordered from an Authorized Service Center with mail delivery.
[Links can only be seen by registered and activated users]

Here you can and qualitatively repair any Yamaha electronics, of course.

I bought a brand new KORG TRINITY (year of issue 1995) with an additional memory card for expanding the bank of sounds (S-bank). The sampler option EXB-SMPL is absent on it, since it is not included in the standard package.
As the seller of the instrument explained, there are no sounds loaded on it, there is only one sound, a standard piano. There are no more sounds on it. All jars are empty. He says that the banks are clean on them it is necessary to load sounds.
It is very suspicious that all banks are initialized. The battery that holds the information could be discharged, but the seller should have warned about this. Or someone has done a forced initialization. Ask him in detail why this happened.

1. Please help me figure out how to load sounds into KORGA banks.
[Links can only be seen by registered and activated users]
Depending on which model you have
V3:
[Links can only be seen by registered and activated users]% 20Data
or just Tritnity or Trinity Plus:
[Links can only be seen by registered and activated users]% 20Data
download and download factory banks from a floppy disk.

There are many good banks here from other users:
[Links can only be seen by registered and activated users]

2. Is it possible to do without the EXB-SMPL sample option?

3. Is it possible to somehow directly connect the KORG to the computer?

Yes. You need a midi interface. They are in some sound cards in the form of ordinary midi-holes, they are in the form of cords that connect to the game port of a regular audio device, they are in the form of laces, with a USB connector on one side and midi on the other.
If you buy these, take the branded ones (M-Audio, Edirol) and always with the drivers included. Verified personally.

Dear Masters, help. please. we have a Yamaha PSR-510 synthesizer at school. An elastic band broke under one key. You yourself understand that no one will give money for a new one. Buying a new rubber band is also problematic. here they wrote that you can repair it yourself. Tell me how? Here is a photo of the rubber plate itself and the place where the rubber band broke.
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And here is the place where the rubber band broke
[Links can only be seen by registered and activated users] ([Links can only be seen by registered and activated users])

REDA,
Further (just do not laugh!) Everything.

Vladimir. "Don't laugh" didn't work. Tomorrow I will definitely buy without lubrication. I will do everything according to the instructions. if everything goes well, we invite you to a live concert of my guys. We have 3 children's VIAs. Well, the glade is esssssssesno.

2 months have not used the Yamaha PSR-530 synthesizer. And when they turned it on, it turned out that the symbols began to disappear on the display. You have to read at random. .Disassembled, cleaned, wiped, assembled - and the same result. What could be the reason? Yes, I forgot to say that there are batteries left in the synthesizer and they have oxidized a little. Could this somehow affect the display?

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True, for some reason the power supply stopped working. But I replaced it with a new one.
Exactly the same?
Because, if instead of the standard PA5D, you accidentally bought PA3C, then it is not enough for normal operation.

Added after 6 minutes
Well, or the display dies, in the worst case. (

symbols began to disappear on the display.
batteries and they are slightly oxidized.
As options: nevertheless, poor contact in the display, display cables “rotted” (oh, no need to leave the batteries).

How about with an elastic band? Has it been fixed?

Plug in “My PSR-320 is a good fellow” into the line-in of the sound device and record!: Ok:
Just do not offer to paint all this step by step.

Well, is it really so difficult for a woman to understand how to "throw"?: Ha:

After transportation, not a single control button works. Only the wheel works, due to which the sounds change (Voice) The keyboard works.
Most likely, the cable has come off between the board with buttons and the main board.

What to do?
Contact the nearest authorized service
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An amplifier chip, most likely. I flew like this on a "comb" - SHS-10. I gave it to my friends. they pulled it out of there using a half-meter soldering iron and inserted the Soviet counterpart. The matter was complicated by the fact that our mikruhi worked at 6 and 12 volts, and the bourgeois ones - at five. So they also managed to put in a step-up transformer to power the mikruhi.
Here I came across this statement (it is clear that 2008 is not scolded.) But how easy it is to understand the repair (making such conclusions) without understanding anything about it. This is the same nonsense of a gray mare or fairy tales from the Vienna Woods on a moonlit Arabian night.
That's how we all can advise in the treatment of all kinds of diseases. Provide comprehensive information on marital, family life and advise when to file for divorce and when to wait. Just complete flat. Time goes by but ignorance remains. Moreover, with advice.

Read also: DIY air gun repair

Having removed all the elevators, it will be possible to remove part of the
keyboards with spring-loaded elements, and polyethylene boards with
the paths drawn on them.

On fairly old keyboards, the parsing method can be somewhat
differ, an intermediate stage of removing the edging with plastic will be added. V
In this case, you will need a hair dryer or a soldering iron with adjustable
temperature. Need to melt the plastic on the back
keyboard. When assembling, if possible, then melt the fasteners again
to get the hats, if not, then drip on
a quarter of a droplet of a supermoment or its analogues. Such keyboards are more often
in total do not have a layer with spring-loaded elements, these elements
made in the form of separate rubber caps. Third from the top
the photographs just clearly show that on the part of the keys of these elements already
no.

Now let's move on to the main part of the keyboard - plastic boards with
drawn paths. Polyethylene parts - three, two with tracks and
one blank to provide a gap. Two parts with tracks most often
connected to each other along one of the edges and constitute, as it were, one
part, just this part folds in half (at the place of the fold and
go through the connecting paths), but there are exceptions, for example, on
the photographs are three separate parts, there is just a contact pad for
connections. As a rule, on older keyboards, these three parts are not glued.
between each other (there are two or three spot gluing points), but more or less
fresh is a problem. You can't just disconnect it, just
by pulling, you can tear off the tracks at the intersection with the glue. So
we arm ourselves with a hairdryer and a scalpel (or a clerical knife), and slowly,
starting at the corner of the keyboard (when I say keyboard I mean
polyethylene part), we begin to separate the layers. Glue most often has
blue color. Remember to heat the glue well with a hair dryer before
to divide some area. Take your time - even if somewhere you cut off
track, it can then be restored, but if the tracks are torn off
there will be many, it will be a big problem to restore them.

So the layers are corroded. If you can see the remnants of the liquid that was once spilled -
it is better to rinse this part of the keyboard again and dry it again. More often
total damaged tracks can be seen with the naked eye, but check
tester still follows. In theory, all damaged areas need
redraw, but not always possible (too close
paths are located), and this is not always necessary, on a well-washed and
On a dried keyboard, the corrosion process practically stops. Everything
tracks should have a resistance close to 0, most often 1-2 ohms at
large distance of the measured points - not critical, but in theory the tester
should show short circuit. The damaged track may not ring at all or
have a sufficiently large resistance, in this case it is necessary
lead a path over the decayed one. If the track has rotted all the way down to
contact pad, you will have to carefully clean the area with a scalpel
directly next to the site. The actual drawing process can be seen on
photographs. Remember to check the resistance after the glue has dried.

After the end of the drawing, and the drying of the new tracks (1-1.5 hours),
it is worth collecting the polyethylene part, placing it on an aluminum pallet and
put a part with spring-loaded elements on top. In this form
carefully connect it, start the laptop and check if all the keys are
work. To check, you can use a regular notepad or
special program:
There must be 1 (one) message on the forum

If all keys work normally, you can turn off
laptop, disconnect the keyboard and finish collecting it. Perhaps,
there was only one nuance left with the installation of the keys, more precisely with the key pads. After
installation of elevators, platforms are installed, as a rule, a platform is needed
lower on the spring element in the center, then click on
the platform strictly vertically downward until it clicks.
P.S.
Dear readers, the author is not able to know and remember all laptops,
therefore, answer with 100% probability how one or another understands
the laptop just can't. However, if you correctly ask your question
in the forum (with a MANDATORY exact indication of the model of your laptop), then
most likely get the right advice. Most fastening methods
discussed in the article, while the author operates with photographs from the Internet.

The original article is on the site: _ There should be 1 (one) messages on the forum [/ hide]

The keyboard is an integral device for the operation of personal computers and laptops. The breakdown of this component makes work and leisure at the computer completely inconvenient. Are the malfunctions with the input device removable? How do I fix the keyboard myself? We will analyze this issue in detail and in this article.

It's no secret that these devices can have different shapes and additional keys with appropriate functionality. Even take the same multimedia keyboard, which has a number of special keys at the top. Pretty convenient, right?

But what to do if several keys have stopped doing their work or the entire keyboard is completely out of order? Without a doubt, you can buy a new device, but then you need to be ready to allocate 10-100 dollars for a new device. Why waste money if you can bring your old device back into working order? Prepare a soldering iron, Phillips screwdriver, tester, and read the troubleshooting guide for multiple cases.

The most common cause of a breakdown is a broken wire connection inside the USB cable, which we are used to using to connect an input device to a computer.

Important! Most often, the break occurs at the base of the keyboard itself or near the connectors for connection.

In order to establish the exact cause of the breakdown, you need to look at the operation of the LEDs, which are usually located in the upper right corner of the device. If the keyboard is “working”, then all three lights should flash and go out during the restart of the computer. If this does not happen, then you need to arm yourself with a multimeter (or any other testers) and ring the cable. To do this, you need to do the following:

Turn the device over, take a screwdriver and unscrew all the screws that hold the cover.
You will see a “tape” in front of you with a lot of tracks. Also inside the keyboard is a printed circuit board and a small microcircuit, which is a black blob.
The wire itself must be soldered to the board. We need to check the integrity of his connection with her. We take a multimeter, turn on the ohmmeter on it and call the desired area. You can also ring the diode, which is much more convenient because of the sound signal.
If at least one “vein” does not ring out, then replacing the wire with a defect cannot be avoided. You can try to bite off the part of the wire that is located at the place of passage into the keyboard case with pliers.
If everything is in order with the wires, then the matter is most likely in the microcircuit itself. Then you will definitely have to run to the store for a new one.
Chances are, the problem is with the connector itself. Examine it carefully for defects and align the bent legs with a thin hard object, if any.

We figured out the return of the whole device to life, but how to fix the button on the computer keyboard?

Often we spill something on the desktop, and it’s good if the liquid doesn’t get on the keyboard from the computer, because if the keyboard gets wet, then several buttons or all of them may fail to work. Also, strong mechanical stress, which sometimes happens accidentally, can lead to partial damage. What to do in all these cases? Let's talk about each method of how to fix the keyboard in detail.

Is your favorite tea on the input device? Immediately disconnect the gadget from the computer and wait until it dries completely. If after that several buttons became unusable, then the following recovery method will help you:

Remove all keys in order to access the space under them. Use thin objects or copper wire loops for this.

Important! If you are a novice user, we recommend that you save a photo of the location of the keys to your computer so that the assembly goes smoothly.

Put the keys aside and turn the keyboard over. Now unscrew about a dozen screws holding the cover.
Remove the cover and the film with tracks, very gently wipe them with a cotton swab, which should be moistened with alcohol. Let the film dry completely.
Again, take a cotton swab moistened with alcohol and wipe the space under the keys.
It remains to collect everything back and check the device for performance.

The keyboard device contains contact pads and conductive rubber. They are all located directly below the keyboard buttons. Sometimes minor damage to tracks can be repaired using special compounds capable of conducting current. They are applied to the tracks and bases of conductive rubber. But repairs are not always possible if the device has been used for a very long time.

Important! Users who are fond of typing can generally forget about repairing it, since there is no point in it. Quick wear will bring everything back into place.

Well, turn the synthesizer over, unscrew everything that unscrews, and remove one of the covers. We are presented with three printed circuit boards and two speakers. All this is connected by a rather large number of loops, but it looks quite decent - after all, Yamaha, even though China.

However, the keyboard is still in place, so we unscrew one more screw and disconnect the cables. As it turned out, they are "under the clamp", which initially frightened me - when the train came out, I thought that I had broken everything. But no, it should be so. Of course, there is also a "key" - the first contact is conventionally highlighted in color. In the figure, by the way, this most damaged key can be seen somewhere from the side.

Well, then it turned out that the keyboard consists of octave modules (so I will dare to call it), which, in turn, are corny held on by 4 screws.

Fortunately, the board was not damaged - the key just popped out (and, most importantly, the plastic did not crack anywhere either). Therefore, in fact, I took out this block of keys and immediately inserted it. The most interesting thing is that I have successfully assembled the synthesizer back!

In general, everything ended well, but the moral - it is best not to put racks next to synthesizers.

Different devices fall into our service center. As a rule, these are smartphones and laptops, system units of stationary computers and stereos, and once there was even a rocking chair for a baby.

But for the first time we have a synthesizer as a guest. This is an amateur, but very advanced for its level, Casio LK80 instrument. Its main feature is a unique teaching system, which functions due to the backlighting of the keys (the name of the LK model stands for Lighting Keyboard, which means "glowing keys" in English).

The essence of this system is that the synthesizer plays popular melodies stored in its memory, highlighting the necessary keys. And, after a few workouts, you can already start playing on your own. However, in this case, music training was suspended due to the fact that the synthesizer stopped turning on. So he got to us.

The master of the service center "We'll fix everything!" Repair synthesizer begins with diagnostics - the external power supply is checked, since there was an assumption that there was no voltage supply to the device. However, it turned out to be in working order, the voltage is present at the power connector plug. We proceed to disassemble the case. After opening it, no damage or burnout was visually revealed, all the plumes were connected tightly.

The only problematic point found during visual inspection was the presence of dust particles, which could interfere with the normal operation of the device. However, a cursory examination did not reveal any problems.

In the photo below, you can see dust particles on the heatsink of the amplifier chip.

In order to check the functionality of the boards (there are three of them - the motherboard, which ensures the operation of the display and the amplifier board), it was decided to remove them. The first in line is the amplifier. We unscrew the fasteners.

After dismantling the amplifier board, the master calls its contacts - everything is in order with them, the signal passes.

Next in line is the display board. But at this moment, the specialist of the service center has an assumption that due to the contamination of the case with dust and the general condition of the instrument, problems may be caused by poor contact of the power button.Indeed, it turned out that there is oxide on the copper contact of the switch and the adjacent volume control tracks, which prevents the normal passage of the signal, moreover, under the partially hollow rubber power button inside there is a certain amount of dust, which also interferes with good contact.

After cleaning all contacts and removing dust, the power button is put back in place, there is a pause for a few seconds before checking it (did it work or not?), The button is pressed ... And - everything works!

Rejoicing at the successful solution of the problem, the master played a small fragment of the victory march on an already working synthesizer.

The sound is great, all keys work - synthesizer repair completed. For prophylaxis, the contacts of the remaining control keys were also cleaned.

So, the cause of the Casio LK80 malfunction was trivial - there was no contact on the switch button, and no complicated repairs were required to fix it. Now the instrument is working, its owner will play beautiful melodies on it again, and her children will be able to continue learning music. And all this - thanks to the professionals of the service center "We'll Fix It!" Who carry out high-quality and prompt repair of musical instruments. And to the list of services provided by us, the repair of synthesizers was added.

March 27, 2015. Today I realized that I need at least some sound fragments for my videos, and in the libraries of YouTube and my partner - full G. Well, I think I need to write something myself (imagine, once wrote a lot of music in different styles). Purely for the introduction at least. I took my Roland GW-7 workstation, and most of the keys traditionally do not work for it. Apparently the closing pads of the sensors are being oxidized. In general, this happens to her regularly, especially if you do not use it for a long time. As a result, I did what I had already done more than once: disassembled and cleaned everything. I restored the keyboard, but the display did not. Well, okay, the main thing I need is the keyboard itself - it works.

I think many owners of Roland synthesizers are faced with similar problems and, perhaps, this video will be useful for those who have encountered it for the first time. The process is very dreary, but it took me about an hour in real time, so my eyes are afraid, but my hands do 😉

You can also wipe the contacts with ordinary alcohol. I used to wipe it with it.

This is how a new section and playlist appeared =)

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