Signals cutting every 3 seconds

[chichitsai]

I currently have
82/91 on 1 dish
110/119 on 2nd dish
118 on a 3rd dish
A few days ago, my satllite installer came to bring down a second line in to my house in order for me to watch TV in my bedroom (i have an nfusion and a cnx)
Everything works great when i am watching only on 1 receiver.
However as soon as I open both receiver they both start to freeze every 3 seconds...I also noticed that my signal/quality drops to almost 0...back to normal...drops back...etc.....
It does that even when i am wathching on different channels which are on different sat.
Anyone ever had this issues before, please help me out!
Could it be a defective LNB? or switch?

[Mavrick]

Did your installer ground the system?

[Terryl]

And how did he connect the second coax? From a switch or some other way?

[chichitsai]

I'm not sure what you mean by ground. But all he did was intaller a second switch. And since every lnb has 2 outputs, then basically every switch takes 1 output of every lnb

[n3uspeed2]

Grounding the satellite system to the central building ground helps protect it and other components from lightning damage. Different brands of satellite systems may have special grounding requirements. However, dish installation should comply with local codes and the National Electrical Code (NEC). Refer to your satellite system’s user guides for any other additional grounding information. Grounding the satellite system is something you can probably do yourself. But if you’re not sure, you should contact a qualified electrician. Acceptable central building ground points

• Grounded interior metal cold water pipe within five feet of the point where it enters the building.

• Grounded metallic service raceway.

• Grounded electrical service equipment enclosure.

• Eight-foot grounding rod driven into the ground (only if bonded to the central building ground by #6 or heavier bonding wire). You can buy a grounding rod at Home Depot or Lowes.

• Other acceptable grounding electrodes that comply with sections 250 and 810 of the National Electrical Code

1. Attach the grounding block to the side of your house close to the point you have chosen as the coaxial cable entry point. You may have to use anchors, togglers, or wood screws depending on the surface on which you are mounting the grounding block.

http://www.sadoun.com/Sat/Installation/PICGRB2.gif

CAUTION: It is extremely important to ground the dish AND the coaxial cables to a single point in the central building ground. A nearby lightning strike can easily damage an ungrounded dish, the receiver and your TV. Connecting both ground wires to the same point in the central building ground meets code requirements and provides the best protection for your equipment.

2. Route the coaxial cable and messenger (ground) wire from the bottom of the mast to the grounding block.

3. Make a 3"- 5" drip loop using cable clips at the grounding block. This will prevent water from running into the connection at the grounding block.

4. Place some silicone grease on the connector and connect the coaxial cable to the grounding block

5. Secure the messenger (ground) wire to the grounding block.

6. Locate the central building ground.

7. Use a grounding wire (#10 copper or #8 aluminum) that will extend from the grounding block to the central building ground. Attach the grounding wire to the grounding block by placing it through the wire hole in the grounding block and tightening the screw.

8. Route the grounding wire from the grounding block to the central building ground, and connect to the central building ground.

http://www.sadoun.com/Sat/Installation/Instal2.gif

[Mavrick]

I'm not sure what you mean by ground. But all he did was intaller a second switch. And since every lnb has 2 outputs, then basically every switch takes 1 output of every lnb

Are you using Legacy LNB's and Diseqc switches?

[The Wufman]

sounds like grounding issue where one receiver will overpower the other causing erratic switching issues as well as freeze ups...do as suggested above and ground your setup...route cables coming from switches thru ground block and then to the receivers...using a minimum 10AWG copper wiring run a ground from the ground block to each switch...connect ground wire from block to a good ground point on your home if possible....this will hopefully resolve the issue

[chichitsai]

I have 2 sets of......
82 SW21 Switch 1
91 SW21 Swith 2 - Diseq port 1
110 SW21 Swith 2 - Diseq port 2
118.7 SW21 Swith 2 - Diseq port 3
119 SW21 Swith 2 - Diseq port 4

Can you let me know exactly what must be grounded?

Is it neccessary to go up to my roof or can this be done using the coaxail cables that runs into my receiver?

[chichitsai]

Since both of my coaxial line comes into my basement, can i use a grounding block and simply ground that it this way? This is to avoid me to rent a ladder to go up on my roof (which is very high)
5002

[xayoz]

check your switches...some switches have a screw on the side that you can loosen to clamp down on your ground wire...if that's the case, then your switch can also act as you ground block, which means either ground both diseqc OR all sw21

[The Wufman]

it is best to use a ground block;this will assure a good ground for the coax as well....you could place the ground block in your basement and give that a try;sometimes simply grounding the coax will resolve the issues but if not then you will need to ground all switches to the block

[chichitsai]

thank you everyone.

I will try this tonite

[chichitsai]

I just grounded both lines (in my basement) with a grounding block and still does the same.
I checked everything a noticed that when i am on a channel in the 110 on my nfusion, and my cnx is on either 118 or 119, the lost of signal occurs. Which I don't understand! They are all not even on the same lnb?!? (I am not using the 118/119 lnb to get my 119)
I just called my installer and he told me that some receivers simply don't like working with other receivers....could it be true?
Also, I don't really understand...how can one affect the other if it is not even using the same switches and diseqs?!
I am simply soooooo confused!!!

[Mavrick]

Both receivers are connect via the ports on the LNB's, that is where I think the problem is starting, that's why I asked you what kind of LNB's you are using in post #6. Some lnbs do not isolate their lnb ports properly and Legacy LNB's are bad for this. When a signal comes into one of its ports, the lnb fails to isolate the signals and it allows leakage into the other lnb port, which then travels to the other switch. This leaked noise causes problems with the other switch and causes loss of signal on the other (or both) receivers.

[chichitsai]

That actually kinda make sense. To be honest, I have no idea what kind of lnb i have up there since it is the installer that installed it for me. All i know is that it has 2 outputs per lnb (well, at least that's what i see for my balcony).

[Mavrick]

If this is indeed the problem then there is a way to troubleshoot it but it's going to involve a few trips up & down the ladder. Usualy it's only 1 LNB that's causing the issue so what you can do is turn both receivers off with the back switch and go up to the roof and disconnect all the cables from the LNB's (but keep both cables close to each lnb so you don't mix them up) but leave 1 LNB connected, then go back down to your recivers and turn them both on and test the LNB that you left connected, if both receivers work fine then shut them both off again and go back up and connect another LNB and keep doing the same thing. Hopefully, after connecting another LNB each time you go up, you will come across the one that's causing you the problem and either keep it unhooked or replace the LNB.

[chichitsai]

Thank you everyone who tried to hel me resolved this problem. Since my roof is extremely high up there, i would ask my installer to come to my house and do it.