Question about Casio SA-75 Keyboard

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Casio CTK-541 Keyboard AC Housing

The AC prong is bent and needs to be soldered to the motherboard but the housing is broken. Where can I purchase a new ac prong and/or housing?

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Many people have damaged ac power prong problems. Tools required is a soldering iron and solder wick or a bulb desoldering device . Next you will need Jamesco part no. 101178. This part matches the motherboard part in size and function.

How to : After removing all case screws open case from back. There you should see motherboard. You should desolder the power housing before you remove motherboard screws. (It is easier). After desoldering the power housing remove motherboard screws and gently loosen mother board. You should be able to remove power housing from board (caution if it sticks try remong more solder). Put in new part secure in place and solder (I use tape to hold in place) . AS a note once the motherboard is secured close key board and check for funtionality before puttting all those in place

Posted on Jul 09, 2009

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Posted on Jan 02, 2017

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http://support.casio.com/pdf/008/ctk_720_01_e.pdf

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If you have checked using anew adapter/battery and the CASIO CTK still does not work then its the motherboard inside that needs a repair.

Please take your Casio to a repairmen who should be able to check the current using a voltemeter and solder it at the right place.

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I do not know what part is # 69270460, it does not come in my part list. if it is the power supply socket on your keyboard, then it should be quite an easy task, providing that you have experience in soldering electronics. Todo the job you will probably need Casio schematics and service manual for 555L.
This website ask to do a donation to charity and will send the schematics. Give them (or ask the ladies) proof of recent donation to charity.
Alternatively this website sells schematics and service manual for a price between $10 and $20.

Regards

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