I respect those old Casios. So much class and character. Glad you could save this one from the bin.

@RetroTechRepair

10 ай бұрын

I agree. Nice thing. It's my most viewed video by a long way. Thanks for your comments

It's fascinating how many comments from other nations this video has attracted! Nice repair, thanks for uploading (a UK fan 😁)

@RetroTechRepair

4 жыл бұрын

This is actually my most watched video by a good margin. Seems to be very popular in India where many views come from. Nice to have some international reach. I often get enquires how much it would be to ship the keyboard to India. Thanks again

@animeshtirkey933

3 жыл бұрын

@@RetroTechRepair This is one of the very popular musical instrument for the Indian kids in the late 90s and early 2000 almost all of my friends have it along with me. No doubt its worth watching n gives a nostalgic vibe.

@RetroTechRepair

3 жыл бұрын

@@animeshtirkey933 Thanks, it's my most popular video by a mile! Thanks so much for explaining why. I'm so glad you enjoyed the video thanks so much for explaining and for your comments.

I also have the same one, my dad bought me this on my birthday in 2002as far as i can remember but he's no more! And I wanna fix it no matter what, since it was my first musical instrument, it's my favorite!

@RetroTechRepair

Жыл бұрын

Oh Antara I am so sorry for the loss of your dad. I lost mine 10 years ago and I miss him every day. I hope you get your keyboard repaired. Thank you so much for your heartfelt messages ❤️ ♥️

I knew straight away it'd be the negative tip. All Casio's are negative tip. Love your videos so nice to see these cool things repaired! 😊👍 Funny how they always have a b c stuck on them..

@RetroTechRepair

Жыл бұрын

Thanks.... yeah rookie mistake on my part oddly though this is my most viewed vid by a mile! Thanks for your comments hope you enjoy the channel.

Very nice RTR. ;) I think we have all done that at one point!. It might be useful to detail how to retrofit a polarity protection diode, as not all keyboards/devices have this and it really is a device saver. FYI, if you like these sounds and want something with more range, there are 4 octave versions of this keyboard available. Although not as common as the SA series, look out for casio MA-101 and 201 on ebay, they do occasionally pop up for sale. ;)

@RetroTechRepair

3 жыл бұрын

Hi Chris, thanks for your detailed comments that's a good suggestion, I hope to do a few more keyboards soon. I don't play so I'm always concerned the keyboard repairs are a bit "light" as I just jab at buttons once I have fixed them. If I find one without a protection diode I will definitely do a mod video. Great idea. Nice feedback on alternative models too, I bet they use the exact same IC. Thanks again for feedback. Hope you enjoy the content

@WeeInnovate-uk

3 жыл бұрын

@@RetroTechRepair Yes same silicon chip inside, but many different IC packages. Have a lot of service manuals and have done some research as wanted to increase number of keys on a number of models, but its not possible on most. What Casio and Yamaha appeared to do (way back) is produce the same IC on same die, but package differently for different models, that is connect different pins to the silicon to the outer pins on the plastic package. Its cheaper to fabricate a single fully functional IC then do a different package run, it means that only certain features are available and there are limited easter eggs available. Some, but not the full potential of the silicon. Hope thats not too geeky! ;)

@WeeInnovate-uk

3 жыл бұрын

... Deductive reasoning. Going by service manuals, the SA series has half a dozen (or more) versions of same IC, same number, but with 'versions' e.g. -16, -08 at the end. They all have same sounds, but slightly varying pin-outs and in some case reduced pin numbers (cheapest ones). Bet its exactly the same silicone inside as silicon design & fabrication is the expensive bit. I guess the best potential for easter eggs would come from the most functional models with most number of pins.

Buen video, me sirvio mucho nueva suscriptora saludos!

@RetroTechRepair

2 жыл бұрын

Thanks!

Sound 62: "Wah voice" was used in Sicko Mode

@RetroTechRepair

5 жыл бұрын

Cool!

Sir eska addpter wala circuit me Jo ic LGA hai ..uska number btaye. Na

@RetroTechRepair

2 жыл бұрын

Sorry I can't help

Thanks to My Mate Vince for sending me over. Time for a Cuppa now, cheers.

@RetroTechRepair

3 жыл бұрын

Great to have you along Dave 👍 and another huge thanks to MMV.

Another great video, another fix :-) have you ever tried wd40 or gt85 for removing sticky labels and glue etc, works great, just have to leave it to soak in for a while.

@RetroTechRepair

3 жыл бұрын

Great tip. Thanks. I haven't tried GT65 but did try WD40 and it worked a treat. Thanks 👍

Sir I have not an adopter for as21 keyboards can u tell me How much volt and current adopter isrequired for Casio as21

@RetroTechRepair

11 ай бұрын

I don't know for sure but Think it might be 7.5V centre -ve. Current is low maybe 500mA

Vehicles over here tonight

@RetroTechRepair

2 жыл бұрын

That's nice.

Thanks for the flowers. :D Nice work on this one!

@RetroTechRepair

3 жыл бұрын

Glad you enjoyed the video!

hey can you help me with that amplifier circuit on the keyboard based on an8053n circuit!! I lost that circuit while repairing my sa-21.Just provide me the circuit diagram of that amplifier.

@RetroTechRepair

5 жыл бұрын

Hi Charles thanks for watching the video. This was a simple repair and I didn't need the circuit diagram so I don't have it. But I typed Casio SA-21 schematic into google and it identified several free sources. Sorry I can't be more help

I have an SA-20 and I can turn it on, the keys work but it only makes piano sound and none of the selector buttons work. Could You please point me in the right direction what to check?

@RetroTechRepair

3 жыл бұрын

I'm no expert I think I'd check for electrical continuity between the button contacts and connection to the processor on case their has been battery leak damage. I'd also clean the button contacts on the board and carbon pads on the back of the buttons I case it's had something spilled on it or they have oxidised. Like I say I'm not an expert so this isn't advice it's just what I would do. Cheers

@deodatgyorei

3 жыл бұрын

@@RetroTechRepair Thanks a lot for the answer, I'll try! :)

I cannot thank you enough , it turned out i was using the wrong polarity

@RetroTechRepair

4 жыл бұрын

Great! Happened to me too. The polarity Casio chose for their keyboards seems far less common than the other way around.

@nidhi4079

4 жыл бұрын

RetroTechRepair exactlyy , also really appreciate you doing such a thing , wholesome!!!

@antaravaishnavi

Жыл бұрын

I may sound stupid but what's "polarity" in keyboards?

Mine is making a frequency sound that almost blows my ears i donde know what to do

@RetroTechRepair

Жыл бұрын

Sorry Quelhas. This is quite an old video now and I don't have the keyboard any more. Sorry I cannot help

I also have it working in good condition

@RetroTechRepair

3 жыл бұрын

Good to hear!

@RikkaYeet

3 жыл бұрын

@@RetroTechRepair :)

How cani reapir sa21 resound problem sir

@RetroTechRepair

Жыл бұрын

Sorry I do not know 😟

Sir can you tell me a repair shop of this key

@RetroTechRepair

5 жыл бұрын

Hi! Thanks for your comments. Unfortunately I do not know of a repair shop. Sorry

I have this keyboard . From where can I get that power supply pcb

@RetroTechRepair

2 жыл бұрын

Sorry I don't know

My casio sa21 amp circuit transistor was burned so i remove it and lost it. Can you tell me your transister number ?

@RetroTechRepair

4 ай бұрын

Sorry I don't have the keyboard anymore. So sorry

@user-qv6gm2rv9q

4 ай бұрын

@@RetroTechRepair ok. Thanks for replying 👍

I have the same thing. But it is not running when I starting it, tune are not playing only the speaker is talking sssssssss. Please let me know what's happening.

@RetroTechRepair

3 жыл бұрын

Hi Jaydeep, sorry I don't have the keyboard anymore so I can't help diagnose much. Perhaps try checking the printed circuit board and test components on it.

@JaideepRanswal

3 жыл бұрын

@@RetroTechRepair thanks for your response

@RetroTechRepair

3 жыл бұрын

You are very welcome.

Sir,wheni start this cassio then automatically change no.of keys please tale me what happened?

@RetroTechRepair

4 жыл бұрын

Sorry I don't know what happened

@PranayBahekar

2 жыл бұрын

Same problem

Sir Mujhe 21 no casio chah eye .kya ye uplabdh h to Mujhe Batao or prise kitna have.

@RetroTechRepair

3 жыл бұрын

thanks for your comment

Piano me Apne aap tune back ragi he use kaise riperi kare

@RetroTechRepair

3 жыл бұрын

thanks for your comment

Sir.... How much price is in shop... Of these product

@RetroTechRepair

3 жыл бұрын

Sorry. I don't sell products

there is problem of black keys settings how to insert them

@RetroTechRepair

3 жыл бұрын

Sorry I can't help. Bit thanks so much for your question

Super

@RetroTechRepair

3 жыл бұрын

thanks for your comment. Glad you enjoyed the video

I didnt use my keyboard for 4 tot 5 years And now i tried to turn it on but it didnt turn on what should i dod for that.......pls help me if you know

@RetroTechRepair

4 жыл бұрын

I can't give advice but if it were my keyboard. I would try cleaning the battery terminals. You may need to remove the back cover to access the spring terminal and clean off any rust

@vanithapar4921

3 жыл бұрын

Hey i am facing the same problem.. pls suggest anything that worked for you

I have so many great memory's with this Keyboard 🥲

@RetroTechRepair

Ай бұрын

Good to hear. Glad you enjoyed the video. Thanks so much for your feedback

Now sa21casio available or not?

@RetroTechRepair

4 жыл бұрын

Sorry. Not available. Thanks for looking.

Please can u repair cjarger of this keyboard 🙏🙏🙏

@RetroTechRepair

Жыл бұрын

Sorry I don't have it anymore

How did you reverse the power supply, i have an adaptor

@RetroTechRepair

5 жыл бұрын

My power supply was a universal adapter which had a reversible DC plug.

@priteshjani797

3 жыл бұрын

Mine isn't working via power supply. I don't know how to fix it. Can you please help, can you please elaborate how to get that working.

@sreeraj200

3 жыл бұрын

You can connect adopter also , don't connect more than 5.5 v power

Ye mujhe chahiye kaha milega

@RetroTechRepair

3 жыл бұрын

kshama karen, mujhe nahin pata

Only piano sound come no other saound what is the reason

@RetroTechRepair

2 жыл бұрын

Sorry I do not know

where do I get the Black keys sets full

@RetroTechRepair

4 жыл бұрын

Thanks for your comments. The keyboard is not for sale

@RetroTechRepair

4 жыл бұрын

Sorry I do not know

What you do electric city

@RetroTechRepair

3 жыл бұрын

yes do electricity! Thanks so much for your comment.

Where buy

@RetroTechRepair

3 жыл бұрын

Sorry not for sale

Sir I want to IC AN8053n please help me where is found???

@ErkEdaR

2 жыл бұрын

I am belonging from Maharashtra

@RetroTechRepair

2 жыл бұрын

Sorry I can't help. Thanks for your question

Sir ye casio mojhe bhi cahiye kaise mangaye

@RetroTechRepair

3 жыл бұрын

Thanks for your comment

Sir SA 41 keyboard in awlebel

@RetroTechRepair

5 жыл бұрын

Sorry no :( thanks for enjoying the video

Sa 41 service center plz send repair store

@RetroTechRepair

3 жыл бұрын

thanks for your comment

Price

@RetroTechRepair

5 жыл бұрын

Hi, this was a lot of 2 keyboards I bought on eBay. I paid 15 GBP for the two. The other one will feature in a future vids. I gave this SA21 to charity. I dont repair professionally, just for fun. The cost to me of this repair was very little. Thanks for your comments

Sir I want black and white keys set

@RetroTechRepair

3 жыл бұрын

Sorry I can't help

Sir Casio sa 21 available??

@RetroTechRepair

2 жыл бұрын

Sorry no. It is not

Sir ji kya aapke pass ye 21 no ka casio mill jayega.

@RetroTechRepair

3 жыл бұрын

Interesting

It's actually from the 90's.

@RetroTechRepair

3 жыл бұрын

Actually, yes 1991 I think. Thanks SO much for the clarification 😊

@do-tu5wz

3 жыл бұрын

@@RetroTechRepair you are welcome 👍

is the sa 21 piano sold ?? can i buy it tanks

@RetroTechRepair

5 жыл бұрын

Sorry it's gone. it was donated to charity.

@pangeranzal0978

5 жыл бұрын

what's still there. type sa 45 and 21 keyboard I was looking for. for extracurricular music school br

@RetroTechRepair

5 жыл бұрын

@@pangeranzal0978 sorry it's gone

@pangeranzal0978

5 жыл бұрын

do you have an fb account so that I can get to know me from Indonesia ..😊

@RetroTechRepair

5 жыл бұрын

@@pangeranzal0978 @retrotechrepair

41no. Caisio kaise milegi

@RetroTechRepair

3 жыл бұрын

thanks for your comment

you couldve converted to a lithium ion powered keyboard

@RetroTechRepair

2 жыл бұрын

Hi Badhon. Good idea., I'm sure there are many mods that can be done. Maybe we cam circuit bend one on day. Thanks so muchbfor your feedback

guitar net price Koto

@RetroTechRepair

2 жыл бұрын

Yup

How much money is the casio sir

@RetroTechRepair

4 жыл бұрын

Sorry it is sold.

@pendorvissu

4 жыл бұрын

casio price sir plz

Casio sa21 kidaikkuma bro

@RetroTechRepair

3 жыл бұрын

Thanks for your comments

can it be in hindi?because we don't know English

@RetroTechRepair

Жыл бұрын

Sorry. I don't speak Hindi but if somebody wants to translate and add subtitles let me know

@singerjsrawat8138

Жыл бұрын

thanks for it

tumari shop Kedar hi Plas bataaia mojko sa75 ka balak@ white kiss totgaa hi balk 15 what 22 ki hi😮

Sir casio sa 21 कहां मिलता है

@RetroTechRepair

4 жыл бұрын

Thanks for the comment. I have no idea what it says, but thanks anyway!

@marcinfilimoniuk5160

4 жыл бұрын

@@RetroTechRepair he says "Where do you get" ( google translate XD)

I want sa 21

@RetroTechRepair

3 жыл бұрын

Great little keyboard. Sadly I don't have mine anymore

ভাই কেচিও টা বিক্রি হবে নাকি।

@RetroTechRepair

3 жыл бұрын

Thanks for your comment

Bhai muje ye keyboard chahiye plz reply karo

@RetroTechRepair

5 жыл бұрын

Sorry I don't have the keyboard anymore. Glad you enjoyed the video.

@vibhavnaik3346

5 жыл бұрын

@@RetroTechRepair Bhai sa21 keyboard he kya

Mere paas hai uski suply jall gayi

@RetroTechRepair

Жыл бұрын

Sorry I can't help

Akta Casio kinbo

@RetroTechRepair

3 жыл бұрын

Thanks for your comment

Indiya me nahi milta

@nbyhbovivekanandanofu912

5 жыл бұрын

Ma'am milta hai

@sagartamhankar2360

4 жыл бұрын

Kaha milta hai

@RetroTechRepair

3 жыл бұрын

thanks for your comment

@RetroTechRepair

3 жыл бұрын

thanks for your comment

@RetroTechRepair

3 жыл бұрын

thanks for your comment

I Like keyboards sa21 cek in KZread channeLLs

@RetroTechRepair

3 жыл бұрын

Great. Thanks for your comment

Ic no ask yoy

@RetroTechRepair

Жыл бұрын

Thanks

Money point

@RetroTechRepair

2 жыл бұрын

Sorry I don't have it anymore

ic reapaar

@RetroTechRepair

Жыл бұрын

Thanks

Stor kaha hai

@RetroTechRepair

5 жыл бұрын

England

India me bhejo mal

@RetroTechRepair

3 жыл бұрын

thanks for your comment

Sent to Bangladesh....?

@RetroTechRepair

4 жыл бұрын

Sorry no. The keyboard is not for sale

@sobujmediahd

4 жыл бұрын

@@RetroTechRepair ok,, tnx