Hi,

A few days ago I plugged in my Pro HD and it turned on and after 3 seconds a yellow block showed on screen and the unit shut down.

I unplugged it and held the on/off switch for 30 secs and restarted and it worked.

Then the next day the same happened but this time it would not stay on.

I have updated the firmware hoping that would solve the problem but it hasn't.

I have used the reset switch, but still no good.

So, the unit comes on plays the sound and after a few seconds, it turns off.

Now the unit starts without the yellow block and just shuts down within a couple of seconds.

Please advise.

Steve