Disklavier

I think that you should doubt the breakdown of KD1's thermistor(chip) see the attached file. If it seems that it is broken, you can pursue the cause by temporarily shorting it. 
 by the way You are in luck. 
 In near days I will get used parts of this type of Disklavier. If I get it then I'll contact you again.

On Monday, August 7, 2017, 12:41:20 PM GMT+9, Dmitry dmitryos@... [disklavier] <disklavier@yahoogroups.com> wrote:

    

My Adventure with the Key Drive is still under its way. But the further I go more it doesn't look good to me...
I removed 3 cards and checked the thermo resistance - all looked good. No visual cracks or marks on the cards or chips. One time when I bent a little bit of two cards together (KD2 and KD3) I had for a one second all the E1 errors disappeared. But could not reproduce the same benting only one card. After that moment I could not even reproduce the same state when there was no E1 error anymore.
Technician could not help me and he also could not find out what card is faulty. He also called Yamaha and they told me I have to buy the boards without possibility to return them if I make a wrong decision first (as technical said he wont take that responsibility).
Didn't think it would that way. Will try to check the voltage somewhere on the boards to identify which one is faulty but it now looks to me more sophisticated task and I can burn a board if I make a short circuit.
Was told that each board would cost $322 (hope AUD). But wondering guys if you know someone sells second hard  boards (not much hope for that actually) and might take one back if the issue will be not in that one.
Thank you,Dmitry

On Mon, Jul 31, 2017 at 3:23 PM, tnmshd@yahoo.com [disklavier] <disklavier@yahoogroups.com> wrote:

     

thermo 100 ,26.1   
I guess one of keydrive board is dead or thermo is dead.kd1 thermo ntsa0xv103  normal registance10kΩ.I guess that is possible to judge good or bad  if the thermo is short circuited.or keydrive has 4 thermo and replace them.