Need an operator's manual for Yamaha Elecone organ model MFX-7420

I would contct Yamaha for a list of repair agents in your country.

There are two.
STK4152-2 and STK4192-2

first, how old is this unit? according to this page https://en.wikipedia.org/wiki/List_of_Yamaha_products#Electone_(electronic_organs) they were built between 1983-1988. In other words, it's over 30 yrs old and it may have had some internal electronics finally die.

https://www.manualslib.com/manual/779640/Yamaha-Electone-Fs-30.html

https://www.manualslib.com/manual/779640/Yamaha-Electone-Fs-30.html?page=29#manual

Service Manual for sale on eBay

ttps://www.ebay.com/itm/Yamaha-Electone-Keyboard-HC-2-HC-4-Service-Manual-Schematics-Parts-List-OEM/302676480589?hash=item4678ec924d:g:iToAAOxynwlTcjai

Yamaha Electone Keyboard HC 2 HC 4 Service Manual Schematics Parts List...

Sure, I can help you find the repair and service manual you need. I suggest starting by searching online through authorized Yamaha retailers or in the Yamaha archives. You can also try contacting a local Yamaha dealer for assistance.

Retrevo has a link to the manual for the Yamaha Electone HC-2 organ here: http://www.retrevo.com/search/v2/jsp/downloadPage.jsp?doc=42cf1723b6ae869802a215f20e1c7dc1&modelid=961462&q=Yamaha+HC-2 . You will need to enter a code to access the manual. You can check if Yamaha has copies for sale. You can also download the manual from the Yamaha downloads page: http://download.yamaha.com/top/?site=usa.yamaha.com&language=en . Just search for the HC-2.

I hope this helps.

Cindy Wells

www2.yamaha.co.jp/manual/pdf/emi/english/ele/A55NE.PDF

Yamaha electone organ have no sound el 25 need help thnks...

Go to the electone forum at electone.com and ask there.

Also the organ forum

http://organforum.com/forums/forumdisplay.php

When there, go into the home organ section.

Check if you may have knocked off the speaker leads OR ones to an expression pedal.