Facktory reset my casio ctk-491 keyboard, no sound from speakers

Question moved from Cars and Trucks to a Casio Keyboard one.
Easy enough if you can find the part.

https://www.google.com/search?q=casio+wk-1250+parts+diagram

casio WK1250 Parts and Accessories - PacParts

https://www.pacparts.com > model > model_id=WK1250
Mfg / Model No, Description, PDF, Year. casio WK1250, Musical Instrument: Electronic Keyboard, 1998. The following parts are available for the model listed ...

Casio WK-1250 Repair Parts and Accessories - Syntaur

https://syntaur.com > keyboard > keyboard=2080
Casio WK-1250. Released in 1998. The WK-1250 is a 73-note consumer keyboard with built-in speakers. Synth. All photos are copyrighted by Syntaur, ...

Casio Keyboard Junkyard: Welcome

https://casiokeyboardjunkyard.com Used accessories, parts and stuff for Casio Keyboards ... CASIO WK-1200, WK-1250, WK-1300, WK-1350 models are basically the same and use the same parts.

Casio Repair Parts - Keyboard Kountry

https://www.keyboardkountry.com > keyboard-parts
Casio Repair Parts ; Yamaha Brand Key Lube (Small). $3.80 ; Casio CTK-560L Ma1M Light Boards. $9.95 ; Replacement Keys for Casio CTK-491 and Others. $10.95.
Missing: 1250 ‎' Must include: 1250 ..

Does unit power up? A "dead" keyboard could likely be a defective "wall-wart" power supply BUT don't forget to check the AC outlet as well. If the function lights come on but no audio, I would 1st check with headphones but if that is also dead it may be related to either the slider style volume control on the keyboard, or internal electronic failures.

the drum sound working?
if yes , then check the conection between the keyboard to the mother board

What is the model of your sound card?

what program are you running and did you set up your keyboard with the software so it can recognize it. Depending on what software it is your using as soon as I know I can tell you how to get it working. I use my midi keyboard with everything from reason, Ableton live, pro tools logic logic express vdj traktor basically every software!

should be able to get it here
http://www.devicemanuals.com/guide/Musical%20Instruments/Casio/Casio-CTK-491-User's-Guide-TVRJMU9EQT.html

You will need MIDI cable - widely available from good musical instrument (keyboard) stores and on the internet
For more information about using MIDI on your keyboard see the appropriate section in teh user's manual here http://support.casio.com/pdf/008/ctk_491_01_e.pdf

Try download here:

http://www.retrevo.com/search/v2/jsp/mytrevo/myTrevo.jsp?page=man