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Posted by Alan on 01/30/07 23:11
In article <epmd35$eke$1@news-01.bur.connect.com.au> "Clubsprint" <spamspamspamspam@nospam.com> writes:
>G'day all
>Went and bought a Conia set top box over the christams break and it's
>exposed a problem with my
>AV setup that I need some help with. I also bought and installed a new
>antenna (Hills 400).
>TV is an 80cm Sony WEGA and DVD/HD recorder is a Pioneer.
>These get power from a monster cable powerpack (next to useless)
>The problem I have is when watching TV I get diagonal interference lines
>across the screen.
>With the Ant. direct to TV no problem. Insert the Pioneer and slight problem
>on some stations.
>Plug the Conia set top box into the power and the problem goes ballistic and
>TV is unwatchable
>on analoge. Gets worse when the Conia is in the RF path. Digital from the
>Conia works
>perfect (about 45% signal) but if I want to record the digital and watch TV
>is a huge issue..
>I returned the Conia box to the shop but worked perfect when we plugged it
>in there.
>With or without the monster cable powerpack the result is the same.
>I noticed some voltage in the leads (tingled my fingers) so I think I may
>have an earth problem
>in the house or the AV setup. The TV has an earth pin on it's power lead,
>nothing else has.
>Can anyone please give me some clues as to how to go about
>diagnosing/solving the problem?
>Regards
>Mark
The diagonal lines are most likely interference from the set top
box's switching power supply.
The monster is basically useless, as it is passing the switching
noise from the STB through, though a lot is probably coming from
the STB line cord.
Alan
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