Hello!
As it is written in the title. My at least 12 y. o. Casio WK 7500 is tuning itself! It is super weird and it is totaly accidental, happens time to time. Mostly while I am playing (!), the pitch starts to change. First it sounds like a bit of pitch wheel but then it goes absolutely to a honky tonk piano without any use of pitch wheel or system transposition. Today for the first time it changed its pitch completely to a higher tone and made me huge troubles because I was just choosing the tuning for my singing repertoir. The thing which scares me the most is that it takes usually few minutes and it repairs itself for some time.
How is that even possible? Do you have or know the same problem?
Thank you for the answer.
Hopeless Iva P.
