How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Rusty Your Own Question

Rusty
Rusty, Music Professional
Category: Electronic Musical Instruments
Satisfied Customers: 5649
Experience:  Sound Engineer, Electrical Issues, Tone Consulting
63817454
Type Your Electronic Musical Instruments Question Here...
Rusty is online now

Roland EP-7E Electronic Piano Power jack very intermittent

Customer Question

Roland EP-7E Electronic Piano

Power jack very intermittent contact. Main board appears to be glued-in. After all screws removed and ribbon cables freed, the board is still firmly held from underneath and the back panel attached is firmly anchored in the slot. Is there some other hidden fixing method?
Submitted: 2 years ago.
Category: Electronic Musical Instruments
Expert:  Rusty replied 2 years ago.
Hello, my name is Rusty. The female pins are what spread apart and lose connection. Since the female connection is on the power supply, replace the power supply. Since it sounds like you're already inside the keyboard, check to make sure the outside contacts are making contact. I have no reason at this time to suspect a bad input jack, but rather a bad power supply. Please tell me what you find.
Rusty, Music Professional
Satisfied Customers: 5649
Experience: Sound Engineer, Electrical Issues, Tone Consulting
Rusty and 2 other Electronic Musical Instruments Specialists are ready to help you
Customer: replied 2 years ago.

Hi Rusty,


 


The power jack had been twisted due to the power lead having had a knock which left the plug emerging from the back panel at an angle less than 90 deg. and very intermittent contact. The power supply is the earlier type (mains tx and bridge) and if the plug on the end of the lead was faulty I would just replace the plug; this was why I wanted instructions for removing the main panel to enable replacement of the power jack.


I have been away for the weekend and haven't had chance to look at it again yet. I will let you know what I find.


 


Regards


John B

Expert:  Rusty replied 2 years ago.
Ok, let me give you a couple of tools:

http://www.synfo.nl/servicemanuals/Roland/EP-7_SERVICE_NOTES.pdf

Once you take out the power PCB (22925904 2/4), you'll notice that you can de-solder the jack and replace it with part number (13449726).

Keep this service manual handy, and save it to your desktop. It has a great troubleshooting guide in case you have future problems.

What Customers are Saying:

 
 
 
  • My Expert answered my question promptly and he resolved the issue totally. This is a great service. I am so glad I found it I will definitely use the service again if needed. One Happy Customer
< Previous | Next >
  • My Expert answered my question promptly and he resolved the issue totally. This is a great service. I am so glad I found it I will definitely use the service again if needed. One Happy Customer
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C.
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C.
 
 
 

Meet The Experts:

 
 
 
  • jaimzness

    jaimzness

    Engineer

    Satisfied Customers:

    117
    DAW and MIDI techniques. Keyboard and synthesizer programming. Electronic repair.
< Previous | Next >
  • http://ww2.justanswer.com/uploads/jaimzness/2010-5-5_173549_headshot-64px.jpg jaimzness's Avatar

    jaimzness

    Engineer

    Satisfied Customers:

    117
    DAW and MIDI techniques. Keyboard and synthesizer programming. Electronic repair.
  • http://ww2.justanswer.com/uploads/stereoaz/2010-09-26_161922_js640_IMG_0505.jpg stereoaz's Avatar

    stereoaz

    Technician

    Satisfied Customers:

    25
    20 years repairing electronic musical instruments,amplifiers,speakers.
  • http://ww2.justanswer.com/uploads/TY/TylerOrganist/2014-2-28_42014_DSC0959copy.64x64.jpg Tyler, M.M., CAGO's Avatar

    Tyler, M.M., CAGO

    Professional Musician

    Satisfied Customers:

    289
    20 years training & experience. Familiar with a variety of instruments.
  • http://ww2.justanswer.com/uploads/FH/fhpetrone/2011-12-29_20339_DSC000292.64x64.JPG Federico's Avatar

    Federico

    Musician

    Satisfied Customers:

    32
    Expert in electronic music.
  • http://ww2.justanswer.com/uploads/LI/littlerusty/2015-7-13_19399_eadhot.64x64.jpg Rusty's Avatar

    Rusty

    Music Professional

    Satisfied Customers:

    370
    Sound Engineer, Electrical Issues, Tone Consulting
  • http://ww2.justanswer.com/uploads/SE/SelectTronix/2013-12-28_22514_clrepair.64x64.jpg Carl L's Avatar

    Carl L

    Technician

    Satisfied Customers:

    63
    13+ Years of Computer and Electronics Experience.
  • http://ww2.justanswer.com/uploads/MO/momentouswater/2016-7-25_14535_podcast.64x64.jpg Thomas's Avatar

    Thomas

    Technician

    Satisfied Customers:

    12
    Ready to assist with any and all Electric Instruments