YAMAHA PSR6 CERTAIN NOTES DO NOT WORK IN ALL OCTAVES

[Daniel8393939]

Hello everyone, I recently bought a YAMAHA PSR6 but the notes E# and A do not work in all octaves. In addition to that, two buttons to change the sounds that it comes with do not work. I don't know if that has anything to do with it. In addition, I already checked the contacts and it doesn't seem like it. be the problem since they do not work equally well with the other good contacts, I don't know if someone could help me solve the problem in advance, thank you very much

[Airlock]

https://www.youtube.com/watch?v=eJach-HanHw

In that video the guy used WD40 as a contact cleaner, I'd try contact cleaner first. There are other tips for those Yamaha keyboards in the comment section of the video too.

[Daniel8393939]

Thanks for the help but that was not the problem, the problem was in the printed circuit, so I had to make a jumper to some pins and then everything worked correctly again

[Airlock]

Good job!