Question about Yamaha Full-Size Keyboard
My Yamaha pf 80 is an 88-key electronic piano. It sometimes unexpectedly turns itself off completely. If I leave the switch on, it may come back on an hour later. Where can I take it in the Cleveland, Ohio area to have it repaired? Or where should I ship it to have a bona fide expert fix it?
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Posted on Jan 02, 2017
SOURCE: Yamaha digital piano clp 170
This is a common problem with Yamaha keyboards. The problem is caused by worn-out rubber contacts in the keyboard assembly. In my old Clavinova CLP-500, there was one long rubber contact strip under the keys with two parallel strips of semiconductor material. The Clavinova circuitry determines key velocity by measuring the timing between when the key hits the first and second strips of semiconductor material. The harder you play a key, the less time it takes the key to hit the second semiconductor strip after hitting the first.
After years of playing the keyboard, the keys eventually cause tears in the semiconductor material and this messes up the timing measurement for key velocity. The only solution is to take the keyboard apart and replace the rubber contact strip with a new one.
I got rid of my CLP-500 four or five years ago and got a new CLP-170. The CLP-170 is now having exactly the same problem that the CLP-500 had. Yamaha has re-designed the rubber contacts in the CLP-170 so that there are now eight individual contact strips instead of one long one. The problem is essentially the same, though. You have to take the keyboard apart and replace the worn out rubber contacts.
Here are the part numbers for the rubber contacts that need to be replaced in the CLP-170: V8286600 Rubber Contact, 12 keys, D-C# Qty. 6 V8286800 Rubber Contact, 11 keys, A-C# Qty. 1 V8286700 Rubber Contact, 5 keys, D-C Qty. 1
I suggest you also get a copy of the CLP-170 service manual, part number 001677. It has descriptions of all the steps necessary to take the thing apart and put it back together again. You'll also need a "rod" (which is just a long dowel), part number TX000670. Before you take the circuit boards off the keyboard assembly, you have to insert the dowel between the keys and the frame to keep the keys from falling back and getting in your way. A 5-foot long 1/4-inch dowel will probably work. (I haven't yet taken apart my CLP-170, and I don't have Yamaha's "rod," so I'm not sure if 1/4 inch is the right size or not. I'll report back here if it's not.)
Good luck, Howard
Posted on Sep 27, 2008
have you tried using the can of air. you can get it at almost any drug store walmart or kmart. just spray the can of air between the keys and they should become unstuck.
Posted on Dec 13, 2008
Plug in your ear phones to see if you can hear the sound that way. If not you are experiencing some internal failure in your integrated amp output.
In that case you will need to get authorised service.
Posted on Oct 06, 2009
Check if it might be dragging on the edge of the case. The restoring force for some of these comes from a silicone rubber dome that is oart of the contact. SOMETIMES the dome fails.
Posted on Nov 29, 2009
Testimonial: "sounds good but i am a novice with repairs and do not really understand all the terms used. also, i am not sure how to go about fixing or getting repl"
This pertains to the white keys. If you need to take out a black one, you MUST remove the white ones alongside the black one first.
You push the back end of the key forward (takes a little bit of force) and then lift the back a bit to dis-engage it from the back rail. There is a flat spring under the key. Note how it sets in place.
When re-installing make SURE you get the front of the key engaged with the little lever before attempting to push it forward and down to re-engage the back in the rail.
Posted on Apr 19, 2010
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