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I have a BK7M that has developed a fault. The unit is out of warranty. I contacted Roland support and they said take it to an independent engineer. I am wary of this since some engineers will know less than i do.
When it powers up I get the ROLAND splash screen but then it goes blank. If I power up hold the Red Write key I get a prompt for Update Mode.
I put the 1.5 firmware on a USB and powered up holding the write key down. The USB was accessed and I got the message "Loading ...", however it did not complete with "Success".
So it looks like the CPU is working but maybe the program memory is failing. I took the unit apart and couldn't see anything obvious to change on the processor board like a backup battery.
Any ideas ??
Are there any diagnostic scripts I can run from the USB memory stick ?