>
>
> I think the power supply may be the main problem, the power supplies used
> for almost all of our electronics are called "switching power supplies"
> and these generate a lot of RF noise by the very nature of how they work.
>
>
> Ive found that when you electrically connect two devices (like your tv to
> the DA converter box) in which each device has its own power supply, this
> can sometimes create some really nasty results, I think this is what
> happens
>
> 1. power supply for dac box generates a lot of rf noise
>
>
> 2. rf noise from power supply travels to DA box and adds to the rf being
> generated by the da box itself (the bulk of the total rf noise will be
> more than likely from the power supply)
>
>
> 3. all this RF then travels to the TV and the TV "amplifies" all this
> nasty rf noise as well as the rf already generated by the TVs power supply
> and the TV itself.
>
>
>
> Theres two things you have to do which I can think of that will make a big
> difference, the one that will make the major difference is number 1
>
> 1. Replace the "switching power supply" of the DA box with a "linear power
> supply", a "linear power supply" works differently than a "switching power
> supply" , a linear power supply generates no rf or only extremely little.
> Another alternative would be to replace it with a high capacity battery
> but this might not be most convenient solution.
>
> 2. Have each device plugged into its own rf isolated surge protector,
> something like a tripp lite isobar or the one Marc uses.
>
>
> -Cris
>
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>
> ------------------------------------
>
> Yahoo! Groups Links
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>