Question about Music
HI, Your unit is very old and it can be repaired. Look for someone who does vintage synthesizer repair. John, Syntronics.
Posted on Nov 12, 2013
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Posted on Jan 02, 2017
I went there as well casio.com/usa I would try the MA 150 many times the instructions are very close to each model. If this still wont help, try Ebay and Yahoo there a lot of manual collectors there . You may even get lucky on YouTube good luck DFD please rate me
Posted on Apr 11, 2009
The answer is repair shop if you don't have tools or experience with soldering. If you do it is simple to take it apart and take the old supply jack out. Take it to an electronic parts supplier so they can match a new one up for you. Make sure that the holes in the circuit board are clean and free of broken pins. Make sure that the traces leading to the holes are intact. Do not use too much heat or they will separate from the board. It might help to take the adapter with you as the jacks and plug have to match in size.
Posted on Aug 06, 2009
Here is how you might check the polarity of a 7.5 volt DC replacement adapter:
Put the 5 batteries into the unit and verify operation. NOW using a DC voltmeter measure the voltage from battery negative and meter negative connected and meter positive to the pin on the power jack. IF you see 7.5 volts positive, then the pin is the positive lead for the adapter.
If you see zero, then continue testing.
With the 5 batteries inserted, connect the positive meter lead to the positive of the stack of batteries. Now touch the negative meter lead to the pin.
If there is 7.5 volts there, then the pin is the negative lead for the adapter.
READ THESE INSTRUCTIONS CAREFULLY.
USUALLY the jack has a contact that disconnects the batteery when the plug with sleeve is inserted.. We are testing the jack without inserting a plug here so the plug should HAVE THE BATTERY VOLTAGE with correct polarity on the pin.
Posted on Oct 08, 2009
Testimonial: "Very clear explanation for a non-techie to understand. Many thanks."
You can download a copy at this site... one has to join it for a very nominal fee... about $2 which is worth it...
Posted on Dec 10, 2009
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