Dead C220

[sonic]

Hi everyone,

I have a problem with a KM C220.
The machine wont power up, it stops the whole starting process after 2-3 secs from pressing the main switch.
No display, no fans, only the Start key lights.
I've changed the DC power supply, then the PRCB, then the MFPB, nothing happens.
Any idea what else can cause this type of problem?

Thanks!

[occus]

Maybe RAM? I now there was a tech notice about...
and of corse... the button on display side

[sonic]

No, i've changed the modules too, same result.