Help needed with Self Install

yrrag1974

I'm hoping someone can help.
I have Sky Plus and recently bought a normal Digibox for the bedroom. As I have Sky + I already have an 4 output LNB on the dish. However when I connect the new digibox to either the 3rd or 4th output on the LNB all I get is the message "No Satellite signal being received".

1. I have hooked the digibox up to the existing feed downstairs to check whether it is at fault and the box works fine so thats not the problem.
2. I have used two separate amounts of co-axial cable so both of them couldn't have a break in them.
3. I have refitted the f connectors several times and they are secure and seem to me making a contact.

Can anyone help shed some light on what the problem could be - its driving me crazy.

djpaul

yrrag1974 wrote:

I'm hoping someone can help.
I have Sky Plus and recently bought a normal Digibox for the bedroom. As I have Sky + I already have an 4 output LNB on the dish. However when I connect the new digibox to either the 3rd or 4th output on the LNB all I get is the message "No Satellite signal being received".

1. I have hooked the digibox up to the existing feed downstairs to check whether it is at fault and the box works fine so thats not the problem.
2. I have used two separate amounts of co-axial cable so both of them couldn't have a break in them.
3. I have refitted the f connectors several times and they are secure and seem to me making a contact.

Can anyone help shed some light on what the problem could be - its driving me crazy.

A long shot but might be worth a try, Plug out both boxes and wait 30 secs
plug back in and wait 2 min, power up.:)

watty

Either the inner and outer is shorted on the cable or it is not connecting.

A little more than 1/8th" or 3mm of inner wire should poke past the nut of the connector plug that screws onto the socket.

Make sure braid outer is only around the screw thread an none caught across the inner wire on either end.

Disconnect cable at LNB and Digibox. with a multimeter on 200 OHMs range (resistance) check the meter probes. Near zero when you touch them together. Note display when the probes don't touch. Now connect one probe to inner wire and one to outer. The reading should not change. If it is between 0 and 100 then you have a short.

Now connect one end to digibox and power on at mains.

Put meter on 200V range.
The end at the LNB should now have 12V to 20V depending on what Digibox is trying to do. If it is zero, then you have a broken open circuit cable.

Un plug digibox from mains. Connect up cable at both ends. reconnect digibox.

watty

Also you must use Satellite grade cable. CT100 or CT125. Cable TV cable is particularly bad (deisgned for VHF, Satellite cable carries nearly 6 times the frequency) as is old TV cable that was outside (absorbes water and dramatically reduces signal).

The higher channels can be lost entirely on Cable TV cable.

yrrag1974

Watty - thanks a million but way too complicated for me!

Anyone suggest an installer in Dublin who will install without supplying equipment?

Tony

yrrag1974 wrote:

Watty - thanks a million but way too complicated for me!

Anyone suggest an installer in Dublin who will install without supplying equipment?

where in Dublin?

watty

It sounds like faulty coax or F-connector to me.

yrrag1974

Tony wrote:

where in Dublin?

Firhouse, just off M50.

Tony

yrrag1974 wrote:

Firhouse, just off M50.

Ok think I'm the closest to you but as Watty say's most likely a bad F connector

jonnygee

Just for the fun of it try connecting your existing sky + cables to outputs 3 and 4 of your lnb, if your skyplus box works as normal then you problem is definetley of your own making, most likely cable shorts when fitting f plugs.

Skyuser

Put the 3rd cable into one of the inputs on the sky+ box and check the signal strength.