Just got the last Foxsat HDR from my local Argos. Plugged in, one LNB feed and no loopthroigh as yet. I have done a freesat scan and non freesat scan. I seem to have most channels apart from those on the BBC news transponder. All of the services on Transponder 13 11.954 Horizontal (BBC) - South Beam seem to be missing. Any ideas would be welcome

Not sure if this is significant but the hdr reports this transponder as 11953 H.
Diagnostics tuned to CH 200 shows 100% signal and quality on my setup. What do you get on a manual scan on 11953 H ?

I get 85% strength and 0% quality. I wonder why its only this transponder giving me grief

By the wat I forgot to mention that the service did not turn up at all on a manaul scan.

Have you got a wireless home network or a close neighbour. Particulary a new n type router (BT Home Hub)

Yes I have a home network but only a wireless G. I have turned that off along with my wireless phone system but still no Txp 13. I am wondering if that was the only free to air service in that band then I may have an LNB problem. I haven't used this antenna for some years now.

What's the overall quality reading and whats the reading on other channels?

Sounds like either interference as Graham said or a dish misalignment problem.

Freesat services on 11953 H

110 BBC ALBA............................ 11953
200 BBC News............................ 11953
201 BBC Parliament...................... 11953
700 BBC Radio 1 ........................ 11953
701 BBC Radio 1 Xtra ................... 11953
702 BBC Radio 2 ........................ 11953
703 BBC Radio 3 ........................ 11953
704 BBC Radio 4 FM...................... 11953
707 BBC 6Music.......................... 11953
708 BBC Radio 7......................... 11953
709 BBC Asian Network................... 11953
710 BBC Radio 4 LW...................... 11953
711 BBC World Service .................. 11953
712 BBC Radio Scotland ................. 11953
713 BBC Radio nan Gaidheal (Gaelic) .... 11953
714 BBC Radio Wales .................... 11953
715 BBC Radio Cymru (Welsh) ............ 11953
716 BBC Radio Ulster ................... 11953

Possible. I had an LNB fail a few years ago when it just stopped receiving a couple of transponders. They are very cheap to replace although not always easily accessible.

The strangest thing happened, I did a factory reset for the second time. After the scan, I went to channel 200 BBC News and after about 20 seconds it came on and so did the other missing channels. Signal quality 90%. Lets hope things become more stable when I install my quad LNB

It's possible that you have water in your cable or LNB connector and/or your dish is not as well aligned as it used to be.

I had a similar symptom with an all NEW DIY setup (in another thread here) ie about 90% of the channels but not all of them.

Solved it for myself by moving the coax (first of 3 to be installed) to another LNB outlet but think it might just have been a poor screw into the first LNB outlet but reckon I might still benefit from tweaking the dish alignment.

MKD