Shruthi freezing and turning off

Just got my shruthi repaired with a new ATMEL.

It works now, but shuts off on its own and freezes also.

I also noticed that holding down the first button does not trigger a note on.

Possible firmware or power supply issue? Any ideas? Any help is greatly appreciated!

What power supply are you using ? Sounds to me like overheating of a power converter or cold soldering in the power section…

Ok I agree…using a 9v 300MA

I also have a 7v so I think it must be something internal, just don’t really know where to start

Does the problem occur when nothing is connected to the MIDI in input?

+1 to what nightworxx said

How hot is the 7805?

> I also noticed that holding down the first button does not trigger a note on.

This is normal if it’s running v1.00 or more.