2007-10-29, 02:18 PM
Hi,
A little mystery with which I'd like some help from the electrically minded among us...not a direct GBPVR problem, but I guess relevant to PVRs none the less.
Im setting up a new PVR with two Black Gold DVT-Ts, and very nice they are too. the only problem is that the PVR itself seems to be producing enough interferance to weaken the aerial signal...
After much faffing about Ive managed to arrange things so i can exclude pretty much everything other than the PC and the aerial flylead. So heres the setup:
SD-TV, fed direct from roof aerial.
PC, headless, sat next to TV. Power lead plugged in, aerial flylead plugged into the tuner, but 'loose' at other end. MCE remote is the only other external device. no s-video into TV, etc.
so, I tune TV to analog BBC2 (ie not watching via the PVR, which isnt connected to the TV anyway) and the picture is fine...press power button on the MCE remote, and within about 15 seconds, theres lots of thick black horizontal lines flowing across the TV picture. If I put the PC back to sleep, the interferance disappears. If i unplug the aerial flylead from the back of the pvr while its powered up, the interferance disappears.
So as far as i can understand...the PC is producing interferance, and the aerial 'boosts' it enough to affect the TV roof aerial lead, or the aerial being plugged into the PVR is causing some form of electrical interferance?
Has anyone seen this before? could the PC case be earthing or something? any other ideas? Ive been into Maplin and they were stumped, but thought putting a ferrite ring on the power lead of the TV might be worth a shot, which confused me more than ever....help!:confused:
A little mystery with which I'd like some help from the electrically minded among us...not a direct GBPVR problem, but I guess relevant to PVRs none the less.
Im setting up a new PVR with two Black Gold DVT-Ts, and very nice they are too. the only problem is that the PVR itself seems to be producing enough interferance to weaken the aerial signal...
After much faffing about Ive managed to arrange things so i can exclude pretty much everything other than the PC and the aerial flylead. So heres the setup:
SD-TV, fed direct from roof aerial.
PC, headless, sat next to TV. Power lead plugged in, aerial flylead plugged into the tuner, but 'loose' at other end. MCE remote is the only other external device. no s-video into TV, etc.
so, I tune TV to analog BBC2 (ie not watching via the PVR, which isnt connected to the TV anyway) and the picture is fine...press power button on the MCE remote, and within about 15 seconds, theres lots of thick black horizontal lines flowing across the TV picture. If I put the PC back to sleep, the interferance disappears. If i unplug the aerial flylead from the back of the pvr while its powered up, the interferance disappears.
So as far as i can understand...the PC is producing interferance, and the aerial 'boosts' it enough to affect the TV roof aerial lead, or the aerial being plugged into the PVR is causing some form of electrical interferance?
Has anyone seen this before? could the PC case be earthing or something? any other ideas? Ive been into Maplin and they were stumped, but thought putting a ferrite ring on the power lead of the TV might be worth a shot, which confused me more than ever....help!:confused:
[SIZE="1"]Building PVR-Only Machine for non-tech Uncle and Aunt:
Celeron 2.4, 1gig ram. Insight P4-ITX (mini-itx) mobo, 250w Shuttle silent PSU, slmline DVD rewriter, 40gig system HDD, 150gig Media HDD, Dual Riser holding Hauppauge PVR 350 and Nova-T, along with Nova-T USB2. MCE Remote 2005. Antique Art-Deco Radio for use as case when uncle finds one...
Time for a brew first though :p[/SIZE]
Celeron 2.4, 1gig ram. Insight P4-ITX (mini-itx) mobo, 250w Shuttle silent PSU, slmline DVD rewriter, 40gig system HDD, 150gig Media HDD, Dual Riser holding Hauppauge PVR 350 and Nova-T, along with Nova-T USB2. MCE Remote 2005. Antique Art-Deco Radio for use as case when uncle finds one...
Time for a brew first though :p[/SIZE]