Yamaha dgx 300 Portable Grand

[Colin 444]

Hi, My keyboard has developed a fault; sometimes when playing two or more keys together the notes are completely wrong. I have cleaned the top of the circuit board beneath the keys and all the bits there and this seems to cure the problem for a few hours but then it returns again later. Any suggestions as where to look next please?

 

[SeaGtGruff]

I have no knowledge or experience with repairs, but do you have the service manual?

Service manual, eprom result list | Elektrotanya

Find service and user manuals | Elektrotanya | 2023/11/22

elektrotanya.com

 

[Colin 444]

Many thanks for that, I will have a read through properly later. I've bought some IPA this afternoon for a thorough clean of the PC board and the touch pads in case there is still a bit of gunge film on them...