Fixed it ! .....the earlier clavinovas actually have 4 graphite strips pre key and after cleaning and repainting them 6 times ( made my contact paint with water based polyurethane and graffiti powder ) with no results on the last try before putting it on the lawn , Out of the corner of my eye a tiny glimmer of copper speck flashed on the trace between the next 4 strips , the green material that seals the copper trace had worn off so small you really couldn't see it.... but it was enough to make contact when the the key was pressed.... paint brush and poly urethane over the worn spot..... good as new....there is no way of replacing these board yamaha stopped selling them so bringing them back to life is the only way... thank you for your help , i hope this will help other people keep these alive....
Thanks, great video!!! A simple thing to try first before disassembly is canned compression air blast with the tiny straw attached. I just tried it on one of my digi's for 3 dead keys and it worked fine. The lil straw will fit in between the keys and possibly get some air under the rubber contacts (gently ! Don't ever push if you feel any pressure at all lol. IOW, don't try to work the straw under the rubber contacts. Just work in between keys again gentle.) Blast the air for a short blast around the offending key. Don't over do it. Sometimes just a short lil blast is all you need. Reason ? The amount of pressure of air you get out of the end of that nozzle is quite high and might be enough to clear a few microscopic specs of dust.
it's 100% worked for my korg krome. million thanks! i just cleaned the contact with dry cotton bud and use the 6B pencil to draw on the contact as shown in this video. I was doing it with the power on so i can check if it works. since most of my keys were not working well so i decided to draw on every contact. If the graphite are too much there will be short circuit with frequent repetitive sound of that key produced (rather than burning the electric board) which can be solved by using an eraser to remove the graphite and redraw the contact properly. I believe i dun need to change the rubber strip unless the underneath rubber dot were worn out.
Cheers man, appreciation coming in all the way from Uttarakhand, India. This helped me bring my M-audio Key Rig 49 back to life, Keep shining, Peace out, keep on bringing such great stuff.
You saved me with this! Haven't played a C key for year because of this issue. But after using the pencil, I needed to clean the with alcohol a bit, to remove the dust. It's working again!
The problem with using a pencil to fix contact problems is after repeated hits, the graphite will smear and short out the contacts. Just clean the contacts with isopropal alcohol, and use a proper conductive liquid repair pen.
Not certain about the points made but ,if anyone else is searching for computer repairing try Saankramer Electronic Magazine System (Have a quick look on google cant remember the place now ) ? Ive heard some awesome things about it and my colleague got amazing success with it.
Great video, I also use carbon pencil since having electronic conductor property, but I try to clean off all possible lying dust which makes it not able to have proper contact before I apply the carbon pencil
I didn't have 'le Pen' so I found a soft lead contractors' pencil and now the long dead A#/Bb is sounding again. Works for me, I have a KORG SP-200. All these things, no mater what make, are a mystery looking at how to open/close the darn things, but they all have big chassis screws holding the key-bed down, and smaller screws that hold the end caps and cover plates in place. Not a lot on yt that clearly shows disassembly, so I dived in and did a Fatar STUDIO 90 which is super simple to open, and the harness is easy to unplug. On my SP-200, the harness connect's were impossible to understand how they release, so I just carefully moved the contact's board around with the harnesses connected (that was a lot of screws, huh??). The board looked clean so I just lightly rubbed the 4 contacts to the dead key, stuck my tongue out, protruding a little, maybe a quarter-inch past the lips, and scribed over the conducive surfaces a little, plugged 'er in and the whole upper board was dead, now..realized I had to compress it to the key-board by hand to make contact, and whizz-bang, I had all the keys back! The toughest one I've had to joust with is the KORG 01/w work station Pro-X, heavy as heck and hard to get apart without entering uncharted waters, Ughh! (just to replace that little battery).
Thanks for the video. I have a Korg X3 and followed your suggestions with 2 key differences 1) did everything with the power off and 2) cleaned the dirt off rubber surfaces with some IPA solution. No graphite pencil needed in my case. Thanks again.
To anyone watching this video: this is at best a temporary repair, as the lead from the pencil will wear off. What he should have done is clean the bad contact first with contact cleaner, then use conductive paint specifically for electronics and paint the contact areas again for a more long-term solution.
@@norakatwhy? if its pure alcohol being used to clean, it'll evaporate right off after, so there' shouldn't be any left to make contact with the rubber.
@@norakatactually you use it on CONTACTS and contact surfaces, it evaporates quickly, and NOT on the contact supporting rubber strip. Have to spray it on a piece of paper towel and precisely use it to clean only exactly where you need it
I'm not sure but ,if anyone else needs to find out about circuit board repairs try Saankramer Electronic Magazine System (do a google search ) ? Ive heard some pretty good things about it and my m8 got amazing results with it.
hey ,if anyone else needs to find out about we repair it try Saankramer Electronic Magazine System ( search on google ) ? Ive heard some great things about it and my brother in law got cool success with it.
I spilt a milkshake onto my Korg Triton and I lost use of nearly half of my keys! Thanks to your video now every key works even the ones that previously didn't!!!!!!!
I thought Graphite was something to use in the acoustic piano, never thought that the digital piano also need one. But probably it needs the real Graphite rather than the pencil, it’s an ok substitute but only in a short time, that’s what i heard. Btw it really helps, about using the Graphite in the digital piano, i might need one. Thank you.
pencil did not work for me. i used a more pure graphic. it's called powdered graphite lubricant. brushed it on with a little water color paint brush. it's a dry lubricate. worked great. ps. don't spray contact cleaner on certain types of switches and faders. this is how I messed up my midi board in the first place. oops! ' thanks for helping. great video.
Appreciate any help. My Yamaha PSR 300 has stoped playing. It turns on snd lights up but doesn’t play. Any suggestions really welcome (easy hopefully) or should I just throw it out? Sigh.. Thanks so much Jillllee
No. Not like that, first thing is need to try clean it. some time it just dirty. I did many time and turn out dust or moisture some time make the key not work. Then if it really need to paint, you must use special paint that conduct electricity. We can find it in market.
Hi! I Have an old Roland E-70 keyboard with similar problems. A section of keys has lost their velocity, or sensitivity. I have successfylly cleaned another single key and got i working normally. But the problem with these keys (like 6-7 next to eachother) cannot be solved with cleaning. The keys respond everytime i press them, but always at maximum velocity. There is no visible faults, or dirt. Could the cirquitboard be broken? Maybe I'll try this graphite trick...
Hi, sometimes the keys A, F, Cis, A, F ( right side from middle C ) doesn`t generate sound anymore ( same time work or not, all of them ). Do you have any suggestions?
The foam on my Roland EM-50 keyboard speakers is perished and sounds awful. Can I replace these speakers myself, or do I have to take it to a technician? And if I connect the keyboard to external speakers, can I stop the sound from coming out of the speakers as well? Thank you.
I need help, one of those diodes on my keyboard has burned down... I don't know which diodes go for those keys, that pcb looks same to mine on korg pa800. Can you look it up? Thanks in advance.
I have been using novation keyboard for 2 years. Recently midi sound in my daw goes very little. Even sound is not heard. Then i restart my pc and it sounds perfectly but suddenly the sound falls down. I use cubase 5 on windows 10. My sound card is also ok( focusrite). Can you help me?
Sir in my Yamaha e463 keyboard some keys are not working.so i clean the dust from the keyboard still it is not working,so i remove the keys and press the rubber strip it working but after the keys are fixed ,again it is not working.i think some fault in key contact circuit.what shoud i do please give the solution
hello, im looking for some advice. ive placed my new contacts on my digital piano but after a few minutes of playing some of them seem to be popping out of there place. the feet dont stay in to well with certain keys. any tips on keeping them down? a tape? glue? although i cant imagine that would be good. just looking for anything from anybody whos delt with this issue thanks much in advance!
I guess you solved it already, but there is always someone who has the same problem. I removed the one-octave contact strips from my keyboard because a key was not responding well. The rubber pins that bring the strips to fix them to the board are very difficult to snap into place, it requires a special tool. I ended up damaging the pins and they could no longer be snapped into place. That causes contact failure. Finally I cut the rubber pins completely and put the strip in place. It worked perfectly. However, it may be interesting to put a thin line of contact glue on both edges of the strip, being careful not to get the contacts dirty with the glue. This would ensure that no dust enters the contacts again or that they move out of place. In case of need, the contact glue is not very difficult to peel off. Just make sure that everything is perfectly clean before gluing the strips. I edit: the advantage of removing the fixing pins and gluing the strips is that for a subsequent cleaning of the contacts, it will not be necessary to remove the screws from the board, which are many. It will be enough to remove the keys from the octave that malfunctions, and then carefully peel off the strip to be cleaned. What I say depends on how the keyboard is built, but I think it is valid for most.
Hi, my daughter's piano is making static/layered sounds. It's like you hear strings/piano/ and static at the same time. any guidance on what to do? thank you for your video
Hi.. My psr s950 was not being used for some 4 months... Tody when i turned it on i noticed that one led of variaton button is not glowing... Has someone experienced such problem? and does anybody know how to fix it?
After I clean with alcohol, one key works for 3 hours ( as long as the alcohol doesn't dry up) and again stops playing. I have changed the rubber pad. Is there anything I can do to get my key working. Need urgent ideas
