LNB fault - Techwatch Support Forums: Digital & Satellite TV, FTA, Cable, Computers, Mobile Phones, Apple and General Tech Forums

iggis · 04-11-08, 09:22 AM

I have lost a lot of channels all of a sudden. I checked the dish alignment which is spot on. I now assume I have an LNB problem? Any ideas? If its the LNB, which is the best one?

thanks.

Ian

Invacom 0.3dB twin LNB
Technomate TM6900 HD
Vbox2
1M Gibertini
H-H mount

maud · 04-11-08, 12:20 PM

You are running a twin lnb is the other side ok,and have you tried swapping them over.

iggis · 04-11-08, 12:55 PM

I will try that when it stops raining. Thanks

parad0x_i · 06-11-08, 09:07 PM

You mention the rain... and this may be the problem with water getting into the coax..
Make sure the F connectors are sound and well protected from the rain...

Check the polarities of the lost channels.. If they are for example all H or all V.. it will point to a possible voltage problem..
If they are all high band or all low band channels then it could be the 22khz tone isn't switching the LNB..

You can check the voltage output from your receiver with a DC Voltmeter set on a 20v scale..
Horizontal and vertical channels are 18v & 14v (approx)

:wink_smile:

iggis · 06-11-08, 09:18 PM

Tony,

I went up and checked it, There is a big hole at the front of the LNB, looks like there was some kind of plastic cover. Anyway, its got a hole in it where water has entered, I need a new LNB. Anyone recommend a good replacement?

thanks,

Ian

imported_sulman · 07-11-08, 03:47 AM

Inverto 0.2 db best LNB with low noise.

Sulman

parad0x_i · 12-11-08, 03:42 AM

Quote:

Originally Posted by iggis

Tony,

I went up and checked it, There is a big hole at the front of the LNB, looks like there was some kind of plastic cover. Anyway, its got a hole in it where water has entered, I need a new LNB. Anyone recommend a good replacement?

thanks,

Ian

Sorry Ian only just saw your reply..

Depends on your budget..

Besides already suggested..

Low Cost:
Titanium 2nd Edition - ok general purpose
Titanium 1st Edition - Better than 2nd!
Medium Cost:
BlueLine - Good LNB with decent spec
Higher Cost:
Invacom 031H - V.good with excellent spec
Invacom Q31 - Excellent quad (has better performance than single & double)

db figures are just a 'tag' - you get what you pay for!
See what our sponsor has to offer

:wink_smile:

iggis · 12-11-08, 09:04 AM

Thanks Tony.

waseem1963 · 12-11-08, 06:21 PM

just clean it ... wd40 spray inside that hole than clean with some tissue paper than cover it with something. i put the plastic bag ... it happened with me and it work like this ... may be this tip save some money for u... thanks

iggis · 12-11-08, 07:42 PM

Took it down, had an egg cupfull of water inside it, now in the bin. Put an Inverto .2dB in its place, working spot on, pulling in more channels than before.

thanks to all replies.

04-11-08, 09:22 AM	#1 (permalink)
iggis Junior Member Join Date: Oct 2008 Posts: 7 Thanks: 0 Thanked 0 Times in 0 Posts	LNB fault I have lost a lot of channels all of a sudden. I checked the dish alignment which is spot on. I now assume I have an LNB problem? Any ideas? If its the LNB, which is the best one? thanks. Ian Invacom 0.3dB twin LNB Technomate TM6900 HD Vbox2 1M Gibertini H-H mount

04-11-08, 12:20 PM	#2 (permalink)
maud Member Join Date: Oct 2008 Posts: 85 Thanks: 0 Thanked 0 Times in 0 Posts	LNB fault You are running a twin lnb is the other side ok,and have you tried swapping them over.

04-11-08, 12:55 PM	#3 (permalink)
iggis Junior Member Join Date: Oct 2008 Posts: 7 Thanks: 0 Thanked 0 Times in 0 Posts	LNB fault I will try that when it stops raining. Thanks

06-11-08, 09:07 PM	#4 (permalink)
parad0x_i Senior Member Join Date: Oct 2006 Posts: 3,469 Thanks: 0 Thanked 52 Times in 22 Posts	LNB fault You mention the rain... and this may be the problem with water getting into the coax.. Make sure the F connectors are sound and well protected from the rain... Check the polarities of the lost channels.. If they are for example all H or all V.. it will point to a possible voltage problem.. If they are all high band or all low band channels then it could be the 22khz tone isn't switching the LNB.. You can check the voltage output from your receiver with a DC Voltmeter set on a 20v scale.. Horizontal and vertical channels are 18v & 14v (approx) :wink_smile: __________________ Tony [No Support by Pm] Dreambox 500s / Clarke-Tech 2100+ / Skystar 2 PCI/ 1M motorised SatCatcher with Tm 2200 Motor & Invacom SNH-031 .3db / Fixed dish on 13E & 19.2E/ Season int v1.4 62ºE - 45ºW Press THANKS BUTTON if you find this post useful.. :thumbs_up: ALL MEMBERS PLEASE READ & FOLLOW SATMOZ RULES & GUIDELINES http://i34.tinypic.com/2likneh.gif http://img187.imageshack.us/img187/3...777/readhc3.gi http://img187.imageshack.us/img187/3820/gunitgv3.png http://img299.imageshack.us/img299/5777/readhc3.gif

06-11-08, 09:18 PM	#5 (permalink)
iggis Junior Member Join Date: Oct 2008 Posts: 7 Thanks: 0 Thanked 0 Times in 0 Posts	LNB fault Tony, I went up and checked it, There is a big hole at the front of the LNB, looks like there was some kind of plastic cover. Anyway, its got a hole in it where water has entered, I need a new LNB. Anyone recommend a good replacement? thanks, Ian

07-11-08, 03:47 AM	#6 (permalink)
imported_sulman Junior Member Join Date: Sep 2008 Posts: 13 Thanks: 0 Thanked 0 Times in 0 Posts	LNB fault Inverto 0.2 db best LNB with low noise. Sulman

12-11-08, 09:04 AM	#8 (permalink)
iggis Junior Member Join Date: Oct 2008 Posts: 7 Thanks: 0 Thanked 0 Times in 0 Posts	LNB fault Thanks Tony.

12-11-08, 06:21 PM	#9 (permalink)
waseem1963 Junior Member Join Date: Aug 2006 Posts: 6 Thanks: 0 Thanked 0 Times in 0 Posts	LNB fault just clean it ... wd40 spray inside that hole than clean with some tissue paper than cover it with something. i put the plastic bag ... it happened with me and it work like this ... may be this tip save some money for u... thanks

12-11-08, 07:42 PM	#10 (permalink)
iggis Junior Member Join Date: Oct 2008 Posts: 7 Thanks: 0 Thanked 0 Times in 0 Posts	LNB fault Took it down, had an egg cupfull of water inside it, now in the bin. Put an Inverto .2dB in its place, working spot on, pulling in more channels than before. thanks to all replies.