Help required with water in LNB

loftyj

Hi All
Have got myself a slight problem and could do with some insight.
My dish set up is a 1.2mt fitted with a C120 0.3 invacom, and feedhorb that is made up of a 120 flange welded to a 22mm tube that is fitted with a plastic cap into which a number of holes have been drilled. On Thursday we had a full day of heavy rain, and in the evening I lost all the horizontial signals, the vertical were OK. Today got round to going down garden to check dish and LNB and discovered water had run down feedhorn into LNB, removed same stripped off feedhorn and cleared water from LNB and dried them out. Replaced same and made new joint on cable to be safe. Switch on no horizontal full signal on vertical, after about half an hour the vertical signal slowly faded away. Switched of reciver to have lunch and when I returned same thing again but this time only about 10 minutes of full signal befor fade out.
Has anyone out there had this happen to them, I suspect its the LNB but wanted to check in case its a problem with the reciver (Echostar 2210).

Thanks loftyj.

rolfw

Take the LNB off and dry it out properly in the house, may well perform properly after that.

Rolf If you enjoy our site, you can help support it by wearing our unique branded merchandise, you can do this by clicking on my baseball cap, making a direct donation with Paypal by clicking on the Donation button below, or using our site supporting advertisers, to do this, click on the central image below. Follow us on Twitter, click on the twitter image.

loftyj

@ rolfw.
Thanks tried that it sat on radiator for a couple of hrs.
Think I will just order a new LNB. Do you know of a feedhorn that is watertight instead of an open tube.

rolfw

I think that a lot of them have a membrane across the end, clingfilm would probably work, I've used a carrier bag before, fastened with electrical tape.

Rolf If you enjoy our site, you can help support it by wearing our unique branded merchandise, you can do this by clicking on my baseball cap, making a direct donation with Paypal by clicking on the Donation button below, or using our site supporting advertisers, to do this, click on the central image below. Follow us on Twitter, click on the twitter image.

JohnC

As Rolf mentioned mine has a membrain across the end.... I presume from what you say your dish is Off-Set mine is a 1.2 mtre prime focus dish.. in addition to the membrain and the latest rubber boot on the cable entry, ive always covered my LNB with a plastic 200 ml pop bottle which has kept it perfectly dry for 12 years now....... (it looks impressivly professional as well!!)

Dont know of you could utallise the same with yours if its off-set though.
you may have to resort to a new LNB... shame though.... as its about the best LNB around these days
john

caretaker

I found the best way to keep water off my LNB is by using a plastic plant pot and cover the LNB and securing with duck tape.

greg-h

dont bother byuing a new lnb get a drill and carefully drill through it i mean carefully leave it inside for a few days go to youre local model shop buy some epxoy resen leave it set lnb perfect worked for me

loftyj

Thanks for reply's, solved by doing as told by she who must be obyed ( learnt not to argue after 45 years can't win anyway) and got a new LNB so everything is up and running, will keep old LND and try it in a couple of months to see if will dry out.