I have the same problem, mine is Yamaha YPG-625. This seems to be a common problem with Yamaha keyboards. I opened the 100 screws in the back, separated the main board from the display unit which is under it if you flip the keyboard upside down, to verify if there was any loose wires, nothing of the sort.
It is so frustrating, the keyboard is working fine but it is hard to navigate because the display is not functioning. Yamaha should do a recall as this is obviously something wrong with the keyboard happenning to a lot of people
I discovered in reading the first few pages of the manual for the YPG525 that there is a battery that is soldered in and must be replaced about every 5 years. I was told to call a Yamaha Dealer in my area (714) 522-9011 for Denver, CO and get instructions. The other solution was that I had an adaptor gone bad. Needed to buy a new one.
I discovered in reading the first few pages of the manual for the YPG525 that there is a battery that is soldered in and must be replaced about every 5 years. I was told to call a Yamaha Dealer in my area (714) 522-9011 for Denver, CO and get instructions. The other solution was that I had an adaptor gone bad. Needed to buy a new one.
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