Casio repair

A quick diagnosis and repair of an older casio keyboard.

[@MarioLurig]

Thank you. Not only for the video and process, but for the extra explanations. I know that to non-beginners it's too much info, but hearing how you thought through the traces, the battery connection, the jumper, everything, helped me diagnose and SOLVE the problem on my Casio which was a hand-me-down from a thrift-shop purchase. You gave me confidence to buy a solder sucker and very successfully create a new connection to solve the power issues!

[@briannelson7123]

This was one of the informative and concise KZbin videos I've ever viewed and I have viewed thousands. Great job and continue providing knowledge

[@markkwiatkowski7529]

My wife told me her Casio keyboard had quit after a few months of our toddler playing with it. She said the adapter plugs in and won’t turn on. I flipped it over and discovered about 60 screws. Figured I’d better see if I can find a video as to which ones to remove to open it up. After 3 minutes of your explanation of universal adapters and the polarity, I checked the end of the adapter, and sure enough, my son had unplugged it and reversed the polarity when he put it back together. After 3 agonizing (LOL) minutes... it was fixed and playing again. Thanks so much for the explanation and video! Saved me a bunch of time!

[@classicsuzuki2stroke]

Top man Steve ! Just dug out my keyboard unused for years, and it wouldn't power up. I was using an adaptor with reverse polarity, and didn't even realise these things varied. Thank you for being so thorough...as I was about to bin the keyboard.

[@ashleymadison6518]

THANK YOU THANK YOU THANK YOU. As someone who knows nothing about voltage and all those other terms, you made it so easy to understand!!! I just ordered the appropriate cord for my casio ctk 2080, thank you!!

[@frog4722]

I have to say, this was very insightful and educative. Thank you

[@sennungpangla237]

That's a very clear teaching. Thank you so much. I have learnt a lot.

[@Chrazzari]

Just saved my keyboard, couldn't get it to work so I opened it up. I'd lost the original power supply, so was using another 9V source. Didn't realise the polarity could've been switched, fortunately it didn't do any damage to the circuit. Been sitting on a shelf for at least 5 years. Thanks for the video!

[@sean9284]

How long have you been using it bec realizing that i has a reverse polarity? I tried plugging 3 times at my keyboard. Do u think i damaged the cicruit of keyboard?

[@Chrazzari]

@@sean9284 since I realised I've used it heaps, works fine for me. I don't know if it has reserve polarity protection, but I definitely have put it in incorrectly and it didn't work but I do not think there was any long term damage. Permanent damage is possible though but I am not sure where it'd likely be, maybe there's another cause for you that isn't polarity related

[@Chrazzari]

@@sean9284 I did have to switch the polarity to get it to work though

[@Chrazzari]

Still 7 months after it works, honestly can't thank you enough, feel stupid as it's a simple thing, never would have thought the DC jack polarity wasn't standardised/standardized. I thought my keyboard was stuffed not the adapter, opened it up and was not far off throwing it out. It still works, such a simple fix!

[@Shivaraje-id4tc]

I have ctk5000 keybord But display is not working

[@learn2stophunger933]

This is an outstanding video. Nice job with the explanations and demonstrations.

[@lisagreen3872]

Thank you so much! You are a very good teacher! I want to learn electronics to build art and other things. You make this easier to learn! I'm fixing my casio. I Collect vintage items .tools , even soldering items. I want to rebuild a tube radio. And have items for one. But heck. don't have that mini cleaner .I Have to get one!

[@ettilapse]

Thanks Steve, I'm in a similar situation with a similar board, but thanks to you I was able to find my short easily. Now it's time to get that soldering iron out!

[@devmobray]

Very informative Steve! A very nicely thorough walk through and educational explanation. Great video! Cheers!

[@trimindawilliams2412]

Great Lessons. I can't believe how easy he makes his coarse.

[@pawilon75]

I tried several adapters, but none of them worked. I didn't know about reverse polarity. Thank you for this video!

[@richardgreene4725]

Yep, it's a Devil. Glad you pointed it out. Why do they do that? I became aware that my Casio uses Centre Negative, whilst my Yamaha has Centre Positive, with a very similar PSU that will physically fit both keyboards. Users Beware. The general standard for most DC power supplies is Centre Positive + I did once connect the wrong power supply, as the Casio original supply had broken off the plastic Earth pin "UK" But no damage appeared to be done, and the Casio still worked when reconnecting the correct supply.

[@slugspeed]

I had same adjustable power supply. My daughter had unpluggled the tip and reversed the polarity. I flipped the tip and vuala! Power! Thanks a bunch from dad to dad.

[@WILLY52368]

Thanks for not making it so difficult to understand like some other ones. I just hope I didn't ruin my Casio CTK-501 by using the power supply. Actually my friend left it here but he said it wouldn't turn on so he he said if I wanted to try and get it to power on then have at it. If it wasn't for your video I would not have known about the use AC/DC power supply and using the proper adapter. It actually was working for about 10min but I didn't want to get to excited so I left it alone and after 10min came back to check on it which right at that very moment it went out on its own and could neat power on again, I was bummed. I really want to get it working it looks like it could be something to get into

[@emanuelsimon6145]

Very detailed and helpful tips.

[@handsonwithblg4949]

I know this is an old video but I just got a Casio CTK-518 today for 30 dollars that said it worked at a thrift store . Got home and plugged it in and it worked for about 12 seconds and off it went . Tried again and same thing . Opened the battery door and it had old batteries in it . Took those out and plugged it in again . Same result worked for 12 seconds and off . Found this video and checked the adaptor . Yup , wrong one . Now it had a wrong adaptor and batteries in it . I took the case off and the circuit board looked fine so I cleaned out the dust and put it together again . Got the correct adaptor and it is just fine . I was going to return it tomorrow . Now I have a great new toy . Thanks man !!

[@keyhoarder]

Nice video, i've done the change of power jacks in keyboards many times. Sometime even the solder on the board is ok, but DC jack itself is lousy and it's worth changing because nothing is more irritating than keyboard turning off every time you make a small move. This is Casio CTK 650 from about 1994. i've had this model. It's quite good even for today standards: midi, touch sensitive, nice keybed, effects like chorus, reverb and decent sounds. Much better than todays supermarket noname keyboards.

[@johnjohnoj6408]

ty friend needed to see that i have ctk-533 having same problem

[@BubbleTroubleO_o]

Thanks for the video with the detailed explanation

[@SegaDisneyUniverse]

This will definitely be useful if I ever have this issue with my keyboard in the future. But unfortunately, my 10 year old keyboard recently started giving off static sounds every time I press a key, so I guess it's just time to put the old girl to rest and get myself an upgrade.

[@TechGorilla1987]

Of course I commented before watching. It's my style, plus it's great for channel engagement. :D

[@jsc0731]

I have a Casio CTK-5200 and it doesn’t turn on either. Can i follow the same steps?

[@ellenbacklin]

I don't have all these trinkets. But another suggestion is using an air pressure can and blowing air into power hole to remove dust. My friends kettle Casio was outside for 2 years collecting dust and electronics and dust attract one another. I have to do that once in awhile on my other keyboards.

[@soundinducedflow]

Very clear explanation! Thanks a lot Steve for being so coherent!

[@chrisqueraud2716]

Hello Steve. Many thanks for this sinply movie who help me a lot and saved a keyboard I have bouth 5 Euros ... The connection power whas broken than the mother board and after saw your movie I décided to fix the CTK 650 for the fun ..after resolder the positive point and the negative on motherboard , it wasen't " work" so I decided to connect on the battery power point,,, and miracle, it resarted wery well. Thanks again and sorry for my poor english !!!!! Have a nice day . Best Rgd Bye Chris o+o

[@stevewatr]

You're welcome.

[@ravenousravendesign]

Cool. Thanks! Can't wait to try this out soon.

[@ahnusazeez8646]

Great video.very informative

[@SiteSpecificMedia]

Hi Steve, I'd like to fix my keyboard so that it works with batteries - any suggestions/videos for that? Based on your great explanation about AC adapters and polarity, I believe my 1983 Casio keyboard no longer works because of what you described, i.e., using an adapter with the wrong polarity. (My keyboard does not have an icon on the back to indicate which polarity to use.) I used to be able to use it with batteries, but that doesn't work anymore either. I'd love to be able to use it with batteries though, so that I won't make the wrong-polarity mistake again. Any suggestions would be greatly appreciated, since I was quoted $150 to fix the keyboard. Thanks for making this video!

[@8kaito8]

Awesome wideo! I have just clicked it out of curiosity about my old Casio keyboard, but stayed till the end with inspiration to finally use my soldering iron for the first time and start to learn something about soldering and electronics in general. You are a great teacher who explains everything plainly and step by step. Side question - are you Polish-descendant (judging from the surname)? :)

[@terrywilliams8726]

My Casio will play but shuts off after warm. It will come back on every time I push power on so...???

[@dodecafono]

Great video.

[@TechGorilla1987]

I have two different keyboards like this. Both mine take 6 AA batteries as well as AC wall wart. One is a CTK-750

[@TechGorilla1987]

I just gave away my keyboards free on CL.

[@staciethompson1244]

Great! Video

[@seymourbernier5580]

You’re real electronics teacher…

[@berryj.greene7090]

That's OK job. A bit slow paced but.... I sometimes put a bead of Araldite on the component side to further strengthen the power jack as its a common thing that you have happen here.

[@chantellegutierrez1339]

Thank you for the video! I have a Casio 350 and my turn dial knob stopped working I opened it up and almost all the pins were broken off. Can this be soldered back into the circuit board? Thanks again

[@tompastian3447]

Steve, I've got the Casio CTK 500, and have a brand new power supply designated for the CTK 500. While playing on stage the unit shut off and came back on, but when it comes back on, it's always in the starting piano mode. I have some play in the plug in. However, I put a nail in the hole of the hole of the power supply plug, and noticed the problem may actually have been in the power supply plug, not the keyboard . It seems for now that the nail must have done some good, since I've been playing the keyboard for a while, and it has not disconnected. There is another built in problem with the CTK 500, and wonder if you might know how to bypass it; the unit shuts off after about 2 minutes if you don't hit a key. It does this with either the batteries installed, or with the power supply. The problem with this feature is that you have to reset everything when the unit shuts off. I.e. if you want the unit set up for say an organ setting, you have to use that setting before the unit shuts itself off. I tried leaving one of the keys weighted down and then turned the volume way down. Same thing happens, the unit shuts off after about 2 minutes. Any ideas how to keep the unit from shutting off?

[@oceansidebwiggz_myersston197]

Hey bro, you're good people. Real shit, u keep it a hundred, and I appricat that, I do. Thanx W/R from the 760

[@Am71919]

I've always used batteries with my Casio or Radio shack boards, alkaline batteries last 4 months with regular use

[@sarahsanchez150]

Uh my keyboard used batteries and people would bang on the keys and now when I play it randomly turns off when I play a few notes and it doesn't matter what note I play so can u make a video or tell me how to fix it? Thank you!

[@raptunoc787]

Need help with the DC jack on my mom’s old CT-625C

[@trinatrina1741]

Mine is a key lighting response type of casio piano that when I plug it in the keys would just light up. I don't know what is wrong with it.

[@LeoBercoff]

Great! How can I disassemble the keyboard keys, in order to clean furtherly?

[@stevewatr]

Sorry, I have never done that so I do not know. Maybe you could pull off some of the cotton from a Qtip to make it narrow enough to fit between the keys to clean them? Assuming your talking about cleaning the plastic keys, not the contacts underneath.

[@basba_qal]

Good video. Does anyone know how to get static off of the volume button.

[@praisenoko1806]

what a good explanation

[@garylee4315]

Thank you Steve

[@MrElioAlejandro]

Thanks 👍

[@charmedmoquite1972]

thankssss even if it is 1 year old video today, but gold

[@Orionsbelt31]

Thank you...great info. Did you take out the keys on another mission? Casio's have a tendency to get a bit "clacky" and I'm trying to see how to fix that. Actually that's to anyone on there. I have an LK90 but I think Casio has kept the same key design. Anyone?

[@Angel-nb2fn]

Hi Steve! Please l need advice and your help, l bought yesterday Casio sk-1 in perfect condition with box from 1986 and l tried at home and was happy etc.. I wanted to play again, because l have another keyboards and adapters too, so l put by big stupid mistakes another one 9v instead 7,5, directly l realized was the wrong one, and smelled little burn kind of thing as well , l regret sooo much.. Is that anyway to fix or totally f... ed upp ??!!

[@navikashyap7932]

Hi, thank you for this informative video. Can you please tell me how may I get one Main board (Motherboard) for my Casio CTK 811 EX? Please...

[@stevewatr]

Hello. I believe this board was only available direct from Casio. Many of these boards are no longer available. You might want to try finding a used one in ebay.

[@ronkekehinde984]

Steve Watroba my ctk 500 is turning on but not sounding

[@xxafthabxx9346]

Very informative

[@RedGrape08]

How to fix yamaha p45, working for how many minutes and then automatically play demo songs and i can't remove it even pressin the grand piano button every key has a different song that plays, when I turned off the piano I tried to turn it on but the red light is blinking. I tried to factory reset it many times, sometimes the blinking stops and will work for a few seconds/minutes and then it will automatically play demo songs again and when I turn it off again, the red light beside the power button blinks

[@sahilgujar8760]

sir in my ctk 2000 there is a noicey sound or buffring sound coming when keyboard is on what is th solution

[@Matt25]

sahil gujar same my casio ctk3000

[@nelson999gongora3]

Same thing too

[@Xanderfied]

Buzzing noise normally means that there is a spot where either your internal speaker wiring is touching either the PCB, or something metal and electrified inside your case. It could also mean a blown speaker, or your keyboard is using a bad plug or plugged into a bad wall socket, and is getting electrical feedback through the speakers.

[@gerwindagon6547]

Hmm... I don't know how can I fix my CTK-4000. The keys were almost OK, except the C1 key is broken, the normal/fill-in button is seriously not working, but almost OK for the DC, however, no sound. so... how can I fix it? BTW, thanks for the video!

[@AndrewBishop1971]

I have this exact same keyboard and the problem with mine is that the rubber on/off switch has become faulty and you really have to press it in a certain way to get it to work. I wonder how hard the switch is to replace?

[@legamature]

I have to push the power button with 10 pounds of pressure. Using 1 finger. Can I get a new switch?

[@stevewatr]

I cannot remember the type of switch these used. If it uses a membrane type switch, where the back of the button has a coating that touches a film on the board, then cleaning that area of the board with alcohol might help. If it is a hard plastic button, then it probably uses a tact switch that can be replaced but requires soldering skills.

[@magmasunburst9331]

Do you have any idea why one speaker would go on one of these types of Casio keyboards? I've found two like that, one speaker works, another doesn't, and so thinking maybe it's not just a coincidence.

[@pixobe]

Just one of my key is not wokring and it randomly works ( I opended and cleaned the keys), what could have gone wrong? circuite?

[@stevewatr]

Sorry, I never had an issue like that with mine, and do not recall how the key switches worked. If they can be switched around, I might try and switch out the bad key with the highest note since that one is rarely used. hope this helps

[@stevenjhobbs24]

Might’ve been somebody putting the wrong adapter in

[@martinvanwyk361]

My Casio 6200 can switch on but no sound I even try aux but still no sound coming out please help......

[@stevewatr]

Sorry, but no output at the aux output makes it tough to troubleshoot without a schematic.

[@changkhoni9828]

Same case here so have you found the solution

[@Estevn2.O]

My casio keeps shutting off when i press a key

[@ninababy2i1]

Mine do the same. Is there anything we can do?

[@mujeebrahman7807]

Where I can find casio s a 35 keyboard 2 Ic please

[@RosalvoParadella]

Meu casio CT670 não liga. A Mainboard está perfeita, possivelmente está com defeito no Power IC (LA 5668n). Só que este IC não se encontra fácil por aí. O senhor conhece algum outro IC que poss substituí-lo ?

[@Sow777Reap]

I'm trying to fix a similar situation on a Casio Keyboard. Thanks for sharing. Much Blessings to you. 🙏 Lord-Jesus-Christ ✝c✝o✝m

[@tomasw22]

thanks, helped a lot!

[@norrismumba5096]

My keyboard was burnt after missing porality Now I opened it I found the regulater 7805 was burnt After changing it It came on but no sound I check IC volume 2206 was burnt as well I changed it Power sound is there but from keys no sound please help me

[@clictor8694]

am i supposed to plug in the opposite polarity to the plug or same??

[@danifouad3504]

the same

[@terrymutant3581]

I have Casio CDP-S350 and the Control Knob stopped working

[@factsandlaughter]

Hello, my name is Patrick pls i have a CASIO CT-647 keyboard(9v) and i lost its original adapter and i used another adapter(12v) of higher amperage and all of a sudden smoke was coming out of the jack and the keyboard stopped working. i think fried the power system. Can u pls post a video on how i can fix this problem? Thanks.

[@cheeto4493]

By looking at the original solder joint, probably why it was opened the first time. Did you add some hot glue around the plug to help strengthen it?

[@catherineferman7045]

No Why would you do that?

[@catherineferman7045]

Great way to fuck up the connection

[@bethaniyaprayerministries4265]

My psr s 550 keyboard 2A02(2Amps 100v) diode dead. My question sir 2Amps 1000v diode is it suitable? Please reply me? Otherwise not suitable Please any suitable diode number tell me

[@stevewatr]

2A02 is a rectifier rated 2A 100 Volt PIV. So a 2 amp 1000 volt PIV will work, just a larger body. As long as it physically fits, you can replace most rectifiers with higher rated ones. As opposed to zener diodes, where voltage is critical.

[@wartmadengineering1254]

help me with the chip number for casio ctk 5200 audio amp

[@stevewatr]

I dont have a schematic. Why cant you read the number off the chip?

[@markdanieltarnate9162]

how do is open it is there a charger?

[@myriamg3435]

Hello, I'll appreciate if you answer my question. I got a Casio C100 and it hasn't turn on With the battery or the with DC. Thanks in advance.

[@stevewatr]

The only way to determine the issue is by using a meter and troubleshooting. If i were working on it, I would check the voltage path. Even without a schematic, someone with a basic knowledge of DC circuits should be able to find the fault. Bad AC adapter, broken foil trace on the board, bad power switch are all basic things to consider.

[@hamidrezaansari4871]

Perfect 🥰💞👌

[@user-hj4hy4ni9v]

Hi my casio wk 240 has no sound

[@starzz_dragon]

i definitely plugged in using center positive adapter without knowing. i didn't try running the unit on D-cell batteries alone yet, but do you now think that I damaged the keyboard? and if so how reversible is this damage?

[@stevewatr]

It might be ok. There is a diode that is supposed to protect the circuit. You might even have damaged that incorrect charger and not the keyboard.

[@starzz_dragon]

@@stevewatr turned out ok. Bought proper 9v center negative adapter and keyboard works like a champ

[@rushingaming8347]

my dc bracket pin is completely broken inside. you think its possible to just change it out for a usb and make that work?

[@stevewatr]

I think it would be easier to wire uo a female plug directly to the pc board. www.showmecables.com/dc-power-female-chassis-mount-connector-3-0mm-i-d-6-3mm-o-d?gclid=Cj0KCQiAuJb_BRDJARIsAKkycUmdaiEANdAr2fKotzU0qemjfmFw_nYPxUbHjnsfe3mKtEu2Ul3U5LkaAhyaEALw_wcB

[@benkgondrong4367]

My casio LK 280 got about 4 tone can not use😀

[@alicoop21]

Would it work if you just put batteries in because mine won't work when I use the AC adapter so would it would if I used batteries

[@stevewatr]

Not necessarily. Depends where the broken connections are. The jack acts as a switch. When a plug is inserted, it disconnects the batteries so they are not fed voltage by the wall charger.

[@alicoop21]

@@stevewatr oh by the way I got batteries yesterday and my keyboard worked!!!!

[@HEIN-BO-BO-TINT]

How to factory reset casio LK100.

[@sean9284]

Hey i plug a 9v adapter in my casio but it didn't work, and i find out that jt js bec of polarity, Do you think i already damaged my keyboard?

[@stevewatr]

Not sure. Some circuits are designed with a diode across the input that shunts the voltage if the polarity is reversed to protect the keyboard from damage.

[@sean9284]

But its fairly likely i damaged the keyboard right?

[@dirkdelima554]

My Casio digital key b. Dosnt turn out power light goes on?

[@dirkdelima554]

Help!

[@stevewatr]

Doesn't turn out?? Do you mean no sound comes out, but the power light is on? If yes, it could be a lot of things. If there is a line output jack, try an external amplifier. If you get sound out there, it might be the onboard amplifier, the speakers, or even a bad headphone jack. The headphone jack is designed to turn off the speakers when a jack is inserted, but sometimes it mslfunctions.

[@nirmal.damor.musicofficel7812]

Ripeyr in may kiybord

[@404errorcodeV]

so we can thank casio for debunking thomas edison's claim that dc current was way better than ac current. nikola tesla was right. ty casio for being a dinosaur from the beginning.

[@nataliafast9293]

W

[@mattscoville5326]

Tokyo Dracula's

[@fijielectrical8323]

Just cut the wire and solder to board

[@adii6659]

My keyboad model number ctk 496 not working please help me