Casio CT-410V - Repair

The Casio CT-410V is the larger version of the MT-400V. It has the same sound and features and was also released in 1984.
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[@PosyMusic]

Filming the repair so well and in such detail must have made the repair at least 16x more tedious. Respect 😎

[@EgoShredder]

It was really appreciated the attention to detail he put in though. I get easily irritated by many KZbinrs way of presenting their content, but I am struggling to find fault with this channel!

[@cyberyogicowindler2448]

It's me who had completely reworked my Casio CT-410V and e.g. added all missing easteregg features of MT-65. But NEVER use multi-purpose grease - it will make plastic brittle and crumble apart after some months or years. - Use silicone based grease only! Broken plastic hooks under keys can be easily replaced by hotglueing a thick stiff (non-wick) copper wire. Cracked plastic can be welded by using a cotton swab with pure acetone (let it dry some hours afterward, else it breaks like chocolate), but be careful not to spill or smear it where it shouldn't (it will ruin the case surface). Superglue works too, but vapours leave hazy stains those can be unremoveable on transparent parts (be careful with optical components in displays, cameras, CD drives etc.). A piece of glued blister plastic helps to reinforce cracked parts.

[@KeenOnKeys]

Thanks for the tip! I will try the silicone grease next time!

[@tomfurgas2844]

One has to love those wonderful old Casio's. I have several of them that I bought in the 1980's when I started doing my home-taper music. Some of my friends scoffed that I was using those "toys", but by God they got the job done and sounded great to me. My oldest Casio is the MT-30, the model with fake woodgrain finish. I bought it because I wanted an electronic polyphonic keyboard to go with my monophonic ARP synthesizer and the Dr. Rhythm drum machine.

[@marcbrasse747]

Great work again. It sounds surprisingly good. Must be those envelope controls. My tips. Use some wood filler to smooth out any cracks which are still visible on the outside. Then the color it in with a set of children's felt pens. The bigger the number of tints in the set the better. If you get the hang of it you can often recreate the right color quite closely. Although the felt pens colors might be the wrong ones at first sight mixing them by applying them in a pointilistic manner in multiple layers can lead to surprising results. It's a trick i also use on furniture to recreate specific wood tones. It' might not be perfect but creating a hue quite close to the original color is often enough to make a damaged area stick out a lot less. You can also use it for smaller scratches which tend to be lighter then the non-damaged material because the reflective properties of the material in the scratches has changed. Always wipe excess ink away around the scratch before it dries. Why not try it out first on a less precious object to get a hang of it. :-)

[@KeenOnKeys]

Nice tip, maybe I'll try it on my next project

[@cyberyogicowindler2448]

Check how "smart repair" for car dashboards works. They often do similar things and there are plastic repair kits with paint in matching colours etc. (I haven't used this.)

[@brettlemmings]

one of the finest 1980's casiotone ever built! my specimen is in prestine shape thankfully, top video and beautiful music!

[@CasioChaosTheory]

Mesmerizing and fascinating to watch - excellent work! When it comes to repairing large cracks in a case, one thing I often do is to cut small sections of plastic from old food containers, and glue them on the inside of the case over the cracks to reinforce and add strength to the repair. From the outside you wouldn't be able to see these extra pieces, but they add more strength and help prevent the cracks re-opening. Love the backing music too 👍

[@KeenOnKeys]

That's a good idea, thanks!

[@carlosdelrio8309]

Your videos are such a joy to watch, the pace, aesthetics, the music. This is one of my favourite channels. I'm looking forward for any little sampler keyboards, I find those lovely. Greetings from Argentina!

[@nikpan9744]

I like how he uses the keyboard in the video to make all the music!

[@FingeredBenh]

Your videos always brings me to peace, they are becoming therapeutic for me !

[@juno6]

Great video! I did the same thing to mine, except mine wasn't broken. But all the cleaning was the same and it looks like new. Great little analogue synth.

[@leukostad1592]

That was a great restore, it looks the part. I think the music in the background is also really nice.

[@chriswareham]

Really satisfying repair! I'd suggest not worrying about getting glue on the outside of the case - if you use a "superglue" type then I've had good results with scraping any excess off using a razorblade. I use the single sided type of razor blade that can be found in craft shops to clean the excess glue from repairs to plastic cases and also on the body of a bass guitar.

[@KeenOnKeys]

Thanks! I will keep that in mind.

[@palindrone]

Wonderful video and music, inspires me to try this for myself - thank you!

[@UnusualAudio]

Repair videos are my fav

[@timothyverbist5795]

I would like Casio to re-release this beast!

[@kaitlyn__L]

What a beautiful and slightly rare beast. The large speaker grilles are very nice. Banging BGM as always! The internal construction of this is quite nice, dead foam notwithstanding. Engagement ~

[@KeksosDerGrosse]

It's always a treat to watch your videos, especially if there's some refurbishing going on. So satisfying to see how every comes apart and back together!

[@robinbottrell771]

Yessss thank you for another amazing video!

[@dimfad6612]

I admire Your work. The repair, the music and recording. It's just great.

[@McAlby]

Excellent work and amazing music as usual! I miss my CT-410V, I had to sell it because I don't have enough space for all... but the MT-68 has almost the same sounds, except for the filter and the analog chorus. Thanks for sharing!

[@Lhenndyn]

Great, as usual. For cleaning i also use a brush pencil, for the places dificult to acces. There is a big trap also : the small balls inside the switches 😩 easy to lose. This keyboard looks like those from Roland of the same erea.

[@Inivican]

I thoroughly enjoy your videos about synthesizers. They are often an invaluable resources!

[@4estral]

I can tell you put so much work into these videos and I really appreciate it. This is a great little instrument, and the music you made for this video is top notch.

[@PCFROMVCS]

I found a CT-380 with some fun sounds at Goodwill for only about $10. Only problem is its FILTHY. Im so glad you made a video all about cleaning, Im taking notes haha.

[@MattGreerMusic]

Looks and sounds great. Usually for mods on these old Casios, I stop at adding output jacks but I would be quite tempted to extend the trim pots of the filter to surface mounted knobs for deeper editing. I'm glad you mentioned the chorus again. Quite a powerful and rare effect on a keyboard like this.

[@SAerror1]

I'm looking forward to the full Casio CT-S1000V review, if Casio hasn't already sent you a free one they really, really should!

[@KeenOnKeys]

They haven't sent me one, and I don't think they will.

[@RubyInferno]

The sheer amount of effort you put into making these videos...I really hope you get a lot more views man. That was epic!

[@NightBeach]

Love these videos!

[@Gezira]

Great job, as always. 🙂

[@dexx2233]

Great repair video 👏👏👏👏👏 I always watch your videos with a big smile 😊

[@SacSynths_Jack_Z]

Great video!

[@philosynth]

Awesome work!

[@OzanYarman]

Great work! Congratulations! I admire this channel.

[@SynthsandSounds]

Dude, Your videos are awesome! I thought I could maybe fill the KZbin gap for quality 80s keyboard content, but you fill that gap with ease! I feel almost ashamed that I subscribed just now. Also the sounds you make are great. I need to take a closer look at my CT-810, I wonder how closely related they are. Also, we use the same soldering Iron, mine's also set to 400 :)

[@cristhiancantillo4922]

Such a relaxing video to watch... nice content man : )

[@gareth1971]

Have you tried 2 part epoxy for plastic repairs? I find it useful sometimes when you need more strength.

[@KeenOnKeys]

Thanks for the tip. Maybe I'll try it next time, but actually I'm quite happy with the plastic glue.

[@cyberyogicowindler2448]

Avoid epoxy where not strictly needed. It is the most poisonous of all "household" glues and causes cancer. Never touch the liquid or uncured glue without gloves and also avoid the vapours. I only use the kneadable "clay" type (with gloves) to reconstruct crumbly screw posts those have to bear strong loads (mount a CRT or entire chassis to the monitor frame etc.).

[@cyberyogicowindler2448]

@@KeenOnKeys Avoid epoxy where not strictly needed. It is the most poisonous of all "household" glues and causes cancer. Never touch the liquid or uncured glue without gloves and also avoid the vapours. I only use the kneadable "clay" type (with gloves) to reconstruct crumbly screw posts those have to bear strong loads (mount a CRT or entire chassis to the monitor frame etc.).

[@jupixxl]

Very well done

[@SproutyPottedPlant]

I like the part at 14:33 ❤️ those minor 7 chords it’s like a Mega Drive game!

[@fjfrancois]

man you're a Fix Master 👍🏼

[@KeenOnKeys]

Thanks! But to be honest, this was an easy job.

[@fjfrancois]

@@KeenOnKeys I can’t imagine.

[@michaelc9820]

Great Channel Subbed .

[@godzil42]

Heya @KeenOnKeys, a bit of a random question, how do you do the colour background you have on all of your videos? It is always a different colour, so I doubt you paint your bench for every video? Is it through video editing, or do you use colour paper? I really like your setup and how clean it look and put the synth into value 😃

[@KeenOnKeys]

Yes, it is colored paper

[@kgbstudio]

catching up

[@jrg770]

I have a Casio MT400V sitting next to me. I payed $6 for it lol. I took it apart to remove the chorus circuit. Those BBD chips (MN3102\MN3209) 9:45 are difficult to find. I built a Ibanez FL9 Flanger circuit\guitar pedal out of the chips. Unfortunately I have no luck getting the keyboard to function after that. Maybe this video will help, Now I'll watch it and hope I see something that helps :)

[@earljohnson8851]

I have a CT-701 that plays the drum machine and lower set of keys up until the “melody guide” half of the keyboard. Have you any familiarity with this situation or how it can be repaired?

[@BeatemupMaster]

Hi Keen On Keys! That is ... Are you Home on Germany? Because of the Uhu Glue?

[@KeenOnKeys]

Yes

[@BeatemupMaster]

@@KeenOnKeys Aha

[@luigikoopa8771]

here before this gets 1k views

[@TrueMeHow]

repairing synthesizers must be terribly expensive - it literally destroys your credit card!

[@mjimbow]

One question I have a CT400V , is it possible to disconnect the built in speaker when using it on output line with external amplifier ? Do I need to install a specific switch ?

[@KeenOnKeys]

Yes. But you could also use the headphone jack. It automatically turns off the speakers.

[@cyberyogicowindler2448]

​@@KeenOnKeys And NEVER use contact cleaner spray on potentiometers. Particularly with these slide pots (in Bontempi and Casio of that era) it will dissolve the carbon track. Isopropanol is a bit less aggressive (but still don't use scrub with force while soaked). I normally only clean slide pots with a bristle and remove dust by vacuum cleaner. Then play a round of Decathlon on them (move 20 times back and forwards) to get rid of crackling.

[@KeenOnKeys]

@@cyberyogicowindler2448 Oh dear! It looks like I've done a lot of things wrong. The contact cleaner I used was recommended to me and to be honest it has always worked well so far.

[@cyberyogicowindler2448]

​@@KeenOnKeys Contact cleaner spray exist multiple types, but many can be only used for metal because they dissolve the carbon paint in certain potentiometers, which is similarly fragile like a pencil streak. (You can even fix worn pots with soft pencil, but it isn't robust.) Also avoid epoxy glue where not strictly needed. It is the most toxic of all household glues and causes cancer. Never touch the liquid or uncured glue without gloves and also avoid the vapours. I only use the kneadable "clay" type (wear nitrile gloves) to reconstruct crumbled screw posts those need to withstand strong strain (mount a CRT or entire chassis to the monitor frame etc.).

[@MrTomb789]

Is there an English version of the glue shown at 7:27 ?

[@mastercylinder1939]

We call it, washing up liquid.

[@Simon-ui6db]

Anyone else think this guys voice is very similar to Liam Neeson?

[@robertgapatas]

New Wave World

[@irmavirili1726]

Lingua italiana

[@josh_dick]

Mixing superglue with baking soda (for structure) seems to be a popular way to fix cracked plastic and may have been able to be used to incrementally (in layers) construct a new hook for the key that was missing one. Your plastic glue seemed to work great, though!

[@cyberyogicowindler2448]

I often use hotglue reinforced with a piece of blister packaging plastic.