New box - video signal problem
 

Lo all,

Got a new box in fitted today, one in my bedroom. Was sticking, juddering etc all that malarky. Anyway the engineer tried upping the signal, he actually did it by removing unncessary splitters in the end. Still didn't sort the problem so he changed the box over for a 4010. I previously had the very first digital boxes with the analgoue pass through.

This one has the wee gizmo on the back that acts as an analogue passthrough as far as I can work out. Cable layout is.... rf cable from stb into video, rf cable from video into TV. Now when I watch my tv, picture is perfect, even with it going through the video. However, if I stick on my video channel the picture is snowy. If I go onto my video channel and play a video its snowy aswell (ruling out a video retune I'd say). I tried re-tuning my video channel on the TV but after going round and round it only found the one video channel. I can watch my video okay through the scart but the benefit from the passthrough is being able to tape 1-5 and watch cable. So was wondering if anyone had any ideas :)

Just can't think what it is thats causing the snowy picture. Hoping I'm a complete muppet and done something daft :)

Thanks in advance.

Re: New box - video signal problem
 

Hopeless you lot :D

Got me baffled aswell really.

Re: New box - video signal problem
 

go on then , i will stick my neck out , it would appear as though it aint got an anologue pass thru , at least i have bumped it up for you , right or wrong :D :D :D

Re: New box - video signal problem
 

I think it is interference between the STB's RF output and the VCR's. (If you disconnect the STB-VCR cable, do the VCR pictures stop being snowy?)

Can you change the output RF channel that the VCR uses?

Re: New box - video signal problem
 

Not sure about changing the rf channel the VCR uses. Does that just mean tuning it into a different station on the band ? If so, went through them all and snowy is the only one for the video.

My pictures aren't snowy on the telly is the thing. They are perfect. Everything is perfect. Its only when I switch the TV onto the video channel that the picture is snowy, through 1-5 and the cable channel, but only when using the video channel on the telly.

I really can't understand it. Its even snowy when I play a video tape (if I use the video channel (which goes through rf) instead of using the scart). I ended up just swapping the old box from next door and its working fine. The telly next door has a tv/video combo and doesn't suffer the problem. Ta for replies though lads.

Re: New box - video signal problem
 

i had this problem as well it ws fine to watch video etc when cable was not connected to vcr but as soon as it was all went snowy why i have no idea might be the cable rf i think from stb but i am no expert so gave up and just used other stb to tape ch 1-4 on while was using stb to view another ch etc
sorry if no help i will ask some mates to see what they say ok

Re: New box - video signal problem
 

ok found out what it is or might be worth trying ok change rf channel of stb and also of vcr so that they are not close together i.e vcr = rf ch22 and stb rf ch=55 ok hope this helps you out. if not then ask ntl direct ok night.

Re: New box - video signal problem
 

Have u tried this m8y?

I'm assuming that your video pictures were fine before the STB was installed so it really does sound like the STB and the VCR are broadcasting to your TV on the same RF channel - it is possible to change this to a different frequency on both your STB and on your VCR so that they don't interfere with each other.

Look for a tiny flathead screw type adjuster thingy (might be covered with a bung) on the back of your VCR and give it a tweak and it should change the RF channel that it broadcasts on. Then retune your TV to this and have a look.

On another note - the install tech should have checked this before leaving you..