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I have a roland rd-250s with a dead g and a flat in the 2nd lowest octave. I have had filaments replaced and keypads adjusted in the past. The usual charge for this service is prohibative. I need to learn how to open the keyboard (keys, keypads, filaments, computer boards, encased above metal) so that I can adjust keys/keypads, repair/replace filaments.

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  • communistcom Jul 16, 2008

    this is a digital piano, not a receiver. If you have someone waiting to teach me exactly how to open the actual key/hammer assembly and isolate the filament/chip/pad/key assembly;diagnose problem with g/a flat, repair or replace worn part as necessary and reinstall to restore to working condition then I would define my problem as solveable through you and upon receipt of some good faith effort to inform me that you do, in fact possess this solution in contrast to 'you might have some basic tips, for example, then I will consider actually paying your $10 fee if necessary. I appreciate your services, however, the point of seeking online help versus taking my equipment in person to a repairman is not to spend money I can scarcely afford. I understood your premium offer when I read your site and posted my problem. Had that option deemed valuable to me I would have taken it. Your prompt made me wonder about the validity of your forum versus your paid information, and titling my problem as a receiver is inaccurate entirely. I have and plan to use this device for quite a while so if any of you can impart this information to me please respond in some specific manner which relates to the issue. Thank you, I hope you smiled a little, and I really will appreciate the help.---cc


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5 Suggested Answers

japacheco83
  • 15 Answers

SOURCE: adjusting harness in the lowest position

Before helping out i think you should read this first!

AAFES RECALL NO. 08-003
RELEASE DATE:
4 February 2008
SUBJECT: HAZARDOUS RECALL - Evenflo recalls Discovery Child Safety Seats for a potential restraint failure.
DISTRIBUTION: WORLDWIDE In cooperation with National Highway Traffic Safety Administration (NHTSA), Evenflo Baby Products Inc. of Vandalia, OH is voluntarily recalling Discovery Child Safety Seats listed below for a potential restraint failure.
Items: Discovery Child Safety Seats
Number of Units Involved: Approximately One million
Description: The Discovery car seat is designed with a convenience base that attaches to the vehicle's seat and allows the seat to be attached or removed from the vehicle without removing the base.
Hazard: Tests conducted by NHTSA and the Evenflo company has found that these car seats have the potential to separate from its base. Seats could fail to adequately protect children in a high impact side collision.
Models Recalled: 390, 391, 534 and 552 Production Dates: Between April 2005 and January 29, 2008
Sold at: Major retailers and Catalogs. AAFES sold Models 390 and 391 through retail stores and catalog.
Remedy: Evenflo is providing current owners of these models with a free supplemental dual-hook fastener that has proven that the seat remains attached to the base in the event of such collisions.
Instructions for Customers: Owners of the affected seats can contact Evenflo toll-free at 800-356-2229 between 8am and 5pm ET or visit their website at http://safety.evenflo.com/cs/sc/cssc_RD.phtml
Consumers with questions about this or any other safety recall campaign may call NHTSA’s toll-free Vehicle Safety Hotline 1-888-327-4236 (TTY: 800-424-9153); or go to http://www.safercar.gov.

If you still want to adjust the straps, here is a link in pdf format to guide you with your straps and/or harness:

http://www.carseat.org/samples/Sample_Summary.pdf

Posted on Mar 15, 2008

  • 5603 Answers

SOURCE: need to replace black keys on Korg triton

Typically lots of screws to remove. Be careful unplugging any ribbon cables. The cables are easily damamged by exerting force on just the edges.

Have new parts available BEFORE taking it apart for repair.

Posted on Oct 02, 2009

  • 5603 Answers

SOURCE: My Roland Rd-500 has no sound....the factory demo

You either did not get the ribbon cable seated OR got it upside down.

If this cable is the flat ribbon with exposed solder plated points of contact, OFTEN those connectors have a latch to release by GENTLY moving tabs on eaither side in the direction of pulling the cable out. This lock MUST be moved out slightly to allow the cable to seat properly. The solder plated contacts will be FULLY into the connector when seated properly.

These cables ALSO can be inserted backwards and NO connection will be made.

Posted on Feb 14, 2010

  • 5603 Answers

SOURCE: My Casio CTK-496 Keyboard has three keys (2nd

First make sure a keyboard "split" option is not set.

Probably you are going to have to clean the key contacts. They are likely conductive rubber "pills" that are pressed onto a circuit board that has interleaved fingers. Clean both the black pills and the circuit board using ONLY 99% isoprophyl alcohol and Q-Tips.

Posted on Feb 18, 2010

Testimonial: "Worked perfectly. Keyboard plays like new. Thanks!"

  • 5603 Answers

SOURCE: how to repair broken keys on roland rd 300s

This depends on "how" they are "broken".

Many of the keyboards with semi-weighted keys get the keys knocked out of the pivot points and one has to open the unit and reseat the key and/or the key spring retainer.

If the keys have broken parts, replacement is the only option.

Posted on Apr 20, 2010

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You either did not get the ribbon cable seated OR got it upside down.

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Im having issues with my roland juno-d. there are 3 keys that are not sounding properly, they are generally quiet and slower to respond. the board and reubber have both been cleaned with alchol


The next step gets very complicated without test equipment.

It is important to realize how these keyboards work. ( I assumed you cleaned the black rubber dot that forms the contact.)

The keys are "scanned" by the electronics. Usually 12 bits are read at a time and the computer scans through the banks of keys that are usually 1 octave at a time and two per bank to enabling reading the velocity as the contacts for a key close one slightly behiund the other.

If there is any deformation of the contact bearing dome, that will cause a velocity sensing problem.

The keys are scanned as a matrix. To avoid current going backward through keys in other octaves, there are disconnect diodes that prevent coupling of one octave with another and between the two sets of contacts (for velocity sensing) within a single octave.

Do verrify that you cleaned the board and the black rubber dots with 99% isoprophyl alcohol and NOT rubbing alcohol as the latter contains an oil that worsens the problem.

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This is not a site that sells products. We are a free technical support site.

I might suggest www.ebay.com or www.craigslist.com for a keyboard.

Thanks for using Fixya just the same.

Good luck.

Wayne

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