As I found: The PF500 has the same mother board than the P250!!! Is there any PF-500 user with is service issue? Thanks

Hello for everybody! Dear friends, Yamaha P250 users. I wonder if this service issue is only mine and a few people problem, or it is a factory pro...

Dear Yamahasynth people (Bad Mister)! Thank you for your answer. Reading your answer it was already clear that this service issue is far beyond yo...