<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; = charset=us-ascii"> <META content="MSHTML 6.00.2737.800" name=GENERATOR></HEAD> <BODY> <DIV>Don't expect Yamaha to give you anything helpful.  They live in the land = where only Yamaha trained techs work on Yamahas and only Disklavier techs work = on Disklavier.  You will be required to take their Disklavier course = before they will allow you to even open the thing (as you have already = done).  I have installed every compu-player made so far and they would not give me = the time of day because I do not work for an authorized Yamaha dealer.</DIV> <DIV> </DIV> D.L. = Bullock    St. Louis <A href="http://www.thepianoworld.com/">www.thepianoworld.com</A>    -----Original Message----- From: Piannaman@aol.com [mailto:Piannaman@aol.com] Sent: Wednesday, April 07, 2004 = 11:06 PM To: pianotech@ptg.org Subject: MX80 Disklavier questions <BLOCKQUOTE>Howdy folks, I got a call to tune a Yamaha MX80 with Disklavier that plays continuously in a Chinese restaurant.  I tuned it last year, and = it had no real problems to speak of.  When I walked in, my contact told = me that it "makes a real funny noise, like it's hitting on wood."  I = tuned it(it was at pitch, and in remarkably good tune all things considered), and = noticed alot of bubbling hammers.  Keydip was shy almost 2 mm from the = factory spec of 10 mm. I am not that familiar with the workings of = these players.  In a standard piano, I'd either shim the balance rail = or take out paper or cardboard punchings from the front rail to increase = aftertouch.  What stopped me from doing that was the square metal tab that = protrudes from the bottom of the key and slips into a sensor slot on the keybed. =  I have no desire to alter the depth of travel and possibly alter the = elecronic end of the instrument.  Does anyone have experience with this = problem with these instruments? I never did find the woody sound while = tuning the piano, but as soon as I turned on the player mechanism, there it = was, a really loud, obnoxious clack everytime F4 was played.  It didn't = take long to figure out that it was the solenoid knocking against the metal = that covers all of the solenoids.  I pulled up on it manually, and it = was noisy; it was the only solenoid that made the noise.  I'm = assuming that a grommet or rubber washer of some sort is missing, but I did not have = time to take out all of the keys, remove the cover, and find out what was = amiss.  Nor did I have whatever part I might have needed. I = noticed how much the keys were lifted above the balance rail by the solenoids, so = I did a quick fix and lowered the adjustable metal key-stop rail to limit the = travel to the point where the solenoid would not max out.  I know this = is probably a short term solution.  I would certainly appreciate any = advice, information, and general wisdom about either or both of these = problems. I have not called Yamaha yet, but are they likely to be = forthcoming with a tech manual on this, or is there one online somewhere that = someone could direct me towards? Thanks in advance, Dave = Stahl </BLOCKQUOTE></BODY></HTML>