[asterisk-users] TDM400p susceptible to EMI?

[Tim Nelson]

----- Original Message -----
> > On Wed, Jul 13, 2011 at 2:51 PM, Steve Edwards
> > <asterisk.org at sedwards.com> wrote:
> >> I have a TDM400p with 3 fxs and 1 fxo daughter cards.
> >>
> >> It's in a mini-itx case with a 'right-angle' PCI riser card so the
> >> TDM400p
> >> is 'sandwiched' between the Atom D525 CPU and the 2.5" hard drive.
> >>
> >> I'm getting a bunch of clicks and pops on all ports.
> >>
> >> Has anybody had a similar experience? Did you find a solution?
> 
> On Wed, 13 Jul 2011, Andrew Latham wrote:
> 
> > How is it grounded? Silly I know but its possible.
> 
> This box is using a picoPSU-80 80w DC-DC 'power supply' fed from an
> inline 'laptop brick.'
> 
> I ran a separate lead from the chassis to the grounding plug on the
> same
> 'duplex' wall outlet. No joy.
> 

picoPSU's are typically pretty good. I wouldn't suspect it in this case then unless your power supply is underpowered for the hardware's current draw.

--Tim