problem with digital trim on all channels

[bones]

Gents,
after months away...work, sound engineering classes, etc..i am back with a different D8B problem. The board is working fine until today. I now have static hiss in each channel when I turn up the channel's digital trim. The more I increase the digital trim, the louder the hiss. With the digital trim all the way off, the hiss goes away. The hiss starts as soon as I start increasing the digital trim.
I just cleaned all of the ribbon cables and contacts on the inside, cleaned all the contacts on the back of the board. Cleaned the analogue trim with a good pot cleaner, etc.

Any ideas??

Cheers

Bones

[Phil.c]

Does this happen with every boot up?

Phil

[bones]

yep...problem just appeared.

[Crash]

Is this the case for every session file? Did you try recalling more than one session? Do you have the console load a factory start up file on boot up or is it set to load last session? This one seems really odd to me, though being a d8b we should be used to the odd and weird issues by now.

[bones]

Crash,
this affects all session files...

[Crash]

I would try and reload the OS just for giggles....

[anyhorizon]

I'm just gonna mention it anyway, since it hasn't been. Are the "channel filters" turned off? Digital trim is just gain in the 0 & 1 department so it will amplify the garbage the filters are capable of.

Peter

[Crash]

I'm just gonna mention it anyway, since it hasn't been. Are the "channel filters" turned off? Digital trim is just gain in the 0 & 1 department so it will amplify the garbage the filters are capable of.

Peter

Good call Peter, doh!

[bones]

Peter,
I will check this week...thanks!

Cheers
Bones