The Yamaha AN1x Synthesizer mailing list

Thanks Bob!

The problem is that a customer contacted me stating his unit went dead 
after an attempt to update the OS - which is quite odd. According to 
him, he tried everything to resurected it. But the unit stay dead - 
won't power up at all. 

Of course, there are the usual suspects like the power adaptor, the 
power socket, a capacitor in the power supply area. 

That's why I wanted the service manual to study it a bit and maybe 
pinpoint the origin of the problem. To my experience, no synths I 
worked on mysteriously died from an OS update (which was supposedly 
downloaded from the Yamaha website).