Bad LNB?

[todd93]

Hi, all, got most of my problems solved, only have one left and I think I may have a bad LNB. I have a Pansat 2500A on a Dish 500 dish & LNB's. I actually have 2 recievers, the main reciever in the living room works flawlessly. The second reciever, however, has a slight glitch. When watching 110 stations (i.e. Boomerang) it will say scrambled or bad channel, then I hit menu on the remote, got to installation, then to antenna setup and when the antenna screen comes up, sat 110 is already highlighted, the signal bars usually read 70-78% signal, and 99% quality. the bars will both go to zero and back up to said percentages within about 2-3 seconds, I then exit out of everything, and the channel comes in, sometimes it goes back out and I do the same procedure, and it comes back. I have swapped switches with my other reciever and so on, nothing seems to help. Do I have a bad LNB? The LNB's are about 5 years old, and here in Missouri, we have 100+ degrees in the summer, and very harsh winters. thanks for any help I can get

Todd

[bdkjose]

As a dave tech myself, I can say that it may well be the LNB. You wouldn't imagine how many times come across a bad lnb. Just change it, you have nothing to lose.

[snowman777]

Todd, first lets start with lnb's, do u have (2) seperate or a duel lnb Combined? Second did u try useing the second reciever into the living room to see if it works there? Third could the coax be bad? Forth are the setting in both the same in antanna? Just some things to check b/4 changeing the lnb.

[jcghound]

I highly doubt one lnb is bad if one receiver works ok. I agree with snowman, you need to tell us what type lnbs you are using and switches and how you have your cable runs leading to the receivers. You should have two different cables with each running to a receiver. Are you using the 1st receiver as a slave for the second receiver? It kind of sounds like you have a twin legacy lnb and are experiencing a switch problem that is common with the fta receivers using this type lnb. A twin legacy (or quad) has built in switches that are not recognized by the receiver. If you have a seperate dual lnb, it will need two outports on each lnb to support two receivers. You would run 1 cable from each lnb into a diseqec switch and run a cable to your receiver. For the second receiver you use the unused port on each lnb and duplicate another run with deseqec switch to the other receiver. If your cables and switches are correct and you are not using a twin or quad legacy lnb, I would do what snowman suggested and change the receivers around to verify that in fact the receiver works proper and then isolate what is causing the problem. Long cable runs with the desqec switch too far from the receiver can also cause what you are experiencing..
:p hound

[showngo]

Another option is the voltage setup for the lnb and the Hertz. If the voltage is not set correct you will not change from "hi - low" or " h - v" the voltage difference is what tells the lnb how to go. If that reciver has a longer run you could also try setting it to 14/19 to overcome a voltage drop in the line. I do like keeping things at 13/18 myself.

[todd93]

thank you all for your input! I have 2 lnbs, not the single, I do have a longer cable run to the second reciever, I may try the voltage settings and see what happens. I have put that 110 sat on my front reciever and it does the same thing there.

[jcghound]

So you are saying for the receiver "that worked flawlessly" you added 110 and it does the same thing as the second receiver or are you saying you moved the second receiver to where the first was that worked flawlessly (including receiving 110) and still having the same problem? If both receivers are having problems with 110 it may well be an lnb problem however I think you have a switch problem with a twin legacy type lnb or incorrect cable and switches in runs to the receivers if not a twin legacy lnb. Two lnbs as identifying the type lnbs is not saying very much as to if it is a legacy type lnb or dishpro lnb. If the lnb is a dual head and not seperate and has no black writing on the cover of the lnb it is most likely a twin legacy lnb and the built in switch will not work with the fta receivers. This lnb combines the signal from both lnbs and sends both sat signals out each cable as the setup is intended for a two receiver setup. If this is the case, you need to change the lnbs out for a dual seperate lnbs or dishpro lnbs. I would not say this is exactly the case however because this problem would show up while trying to view 119 and you seem to indicate this is not happening.
:p hound

[stca39]

change your coaxial. he might be surprised