how to repair pcb of yamaha psr 740

by piollo bautista
(philippines)

my yamha psr 740 pbc worn out where can i buy the keyboard pcb or can i use another model to replace the pcb thank you

yamaha prs 740 battery replacement

by Dave Kittler
(Adams, Ma)

When the battery goes dead on the yamaha prs 740, does the keyboard lose its internal programming and sounds, and if so, once the battery is replaced, is the information available to reprogram the internal sounds?

Yamaha psr740 floppy interface

Is the psr740 floppy interface IDE or ???

I've seen interface boards that require an IDE interface which allow SD cards to be used instead of a floppy. Having been able to do that at the church's CVP307 (because it has an USB interface) I realize how wonderful it would be to have the massive capacity of an SD card instead of a paltry floppy's capacity.