Bebe1980

Thanks Chas, I'm sure you're right but not being the owner of a multimeter - think I'll just leave it as it is

I've had a look on CASIOPART and discovered: https://imgur.com/1Yv1Y9P about 5 PCB's that could be the right one - anyone suggest which one it is ? My guess is: Casio 10605038 PCB UNIT/KYD1 @ $ 100.71 Numbers I can see on my photo are: PWR NAGL KYD1 RJM511732-001V0 N40A35B5/A30C5/C7A3/C7 N40A35B5/A30C5/C7A3/C7 - This number comes up in google as a part number but I cannot find an image to match it against !

OK... not sure this will work but here are the url to the images https://imgur.com/UqgJ1sh https://imgur.com/uaf8c1K https://imgur.com/fAJDMd6 https://imgur.com/wpaYFyg https://imgur.com/dFQRwDf https://imgur.com/VTFwGd9 I took it apart - 19 screws for the case and 8 for the plastic keys... It's quite easy - just hold it together when it's unscrewed, turn it over and lift the top and bottom apart - starting with the handle... then rest the top against some pillows or something. I couldn't see any damage from liquid etc. - perhaps it's on the other side - underneath - I gave it a little dust and put it back together - still works. I didn't want to take off the all the keys and look at the other side as I doubt I'd know the difference! So I couldn't fix it. Guess I'll either need to buy a whole new key contact board to plug into the control board - or maybe send it for repair. I did disconnect the main ribbon cable from the control board to the key contact board and reconnect it but that didn't change anything.

OK I'll take it apart later - I suspect the boy, who can be very heavy handed, has dislodged the contact thingies at some time - used to bang on it quite a lot

Update: When I play an internal song the keys light up and the sound comes out I tried the midi - same thing, no signals going from the keys C1 to G1 Couldn't find any midi files on Chordana so I played Danny boy from Chordana app and the keys light up and work So that means? It's to do with the physical keyboard - perhaps I should open it up and have a look - maybe take a pic or two to share ?

OK thanks - I'll give it a try

By the way the lights don't work either for that section of the keyboard - so it's not just the sound. I use the transpose function to wind it down -12 when I use it for practice or learning something new from the pc - so it's not the end of the world but would be nice to fix it.

Hello - thanks - no never taken apart and bought it new for my kids who have probably been a bit rough with it I think...

Thanks I just tried that - still the same .

Thanks :)

Hi, the keys C1 to G1 on our LKS250 are not working - anyone know what the problem might be and whether there might be an easy fix ? Thank you ps. I tried to ask this question before but just got pending approval Is there something I need to do to get my posts working ???