Over heating LNB

**Sanity** · 11-01-08, 12:43 AM

I am wondering if anyone can recommend a specific brand/model of LNB which handles heat well ? Over the years I have had numerous problems on extremely hot days ( around 40 ) where the LNB gets too hot and I lose the picture. The only way to restore it is to go out and turn the hose on the dish for a few minutes , but having to do that every 30 minutes gives you the shits

Thanks in advance

**cwispy** · 11-01-08, 12:51 AM

Are you sure its the lnb and not dish distortion?

**Kavakid** · 11-01-08, 01:04 AM

Can you put a white plastic cover over it to stop direct sun?
I use a .5 litre icecream container (empty :-)

KK

**SystemRat** · 11-01-08, 03:21 AM

Could be reflected heat from the dish. I melted the cap off an LNB once on a 180 cm dish

I repainted it a mat finish which helped. Not sure if this happens with smaller dishs.

**bulbous** · 11-01-08, 05:03 AM

Why not try moving the LNB LO frequency in your receiver setup a few MHz ?

You might strike a frequency which works at both temperature extremes to save you from changing this one setup detail on temperature shift.

This post assumes the LNB LO is drifting with temperature changes, and not that the LNB is shitting itself entirely.

You can only try !

**machine** · 11-01-08, 05:30 AM

Hi,

Maybe some of that 30+ stuff, u no, the stuff the cancer council gives out.

Lasts up to 8 hrs, so the label says.

O'h yeah, it's waterproof, so u can still hose it down

machine

**z80** · 11-01-08, 06:07 AM

Just paint the lnb completely white with house paint.

11-01-08, 12:43 AM	#1 (permalink)
Sanity Super Moderator iTrader: (5) Join Date: Jan 2008 Location: Victoria Posts: 3,042	Over heating LNB I am wondering if anyone can recommend a specific brand/model of LNB which handles heat well ? Over the years I have had numerous problems on extremely hot days ( around 40 ) where the LNB gets too hot and I lose the picture. The only way to restore it is to go out and turn the hose on the dish for a few minutes , but having to do that every 30 minutes gives you the shits Thanks in advance

11-01-08, 12:51 AM	#2 (permalink)
cwispy Premium Member iTrader: (12) Join Date: Jan 2008 Posts: 630	Are you sure its the lnb and not dish distortion? __________________ Business Web, Email, SQL hosting and Online Backup services available. http://www.2000cn.com.au Wii, Xbox, Xbox 360, PS2, PS3 mods and repairs http://www.ausmodchips.com or PM me for further details

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11-01-08, 01:04 AM	#3 (permalink)
Kavakid Premium Member iTrader: (0) Join Date: Jan 2008 Posts: 194 Spent time on board: 1 Week, 3 Days and 12:41:13	Can you put a white plastic cover over it to stop direct sun? I use a .5 litre icecream container (empty :-) KK

11-01-08, 03:21 AM	#4 (permalink)
SystemRat I am NOT the Messiah! iTrader: (0) Join Date: Jan 2008 Posts: 549 Spent time on board: 1 Week, 1 Day and 20:40:35	Could be reflected heat from the dish. I melted the cap off an LNB once on a 180 cm dish I repainted it a mat finish which helped. Not sure if this happens with smaller dishs.

11-01-08, 05:03 AM	#5 (permalink)
bulbous Thaumaturgist iTrader: (0) Join Date: Jan 2008 Posts: 344 Spent time on board: 1 Week, 5 Days and 1:41:35	Why not try moving the LNB LO frequency in your receiver setup a few MHz ? You might strike a frequency which works at both temperature extremes to save you from changing this one setup detail on temperature shift. This post assumes the LNB LO is drifting with temperature changes, and not that the LNB is shitting itself entirely. You can only try !

11-01-08, 05:30 AM	#6 (permalink)
machine Premium Member iTrader: (1) Join Date: Jan 2008 Location: The Gong Posts: 284 Spent time on board: 1 Week, 1 Day and 11:11:14	Hi, Maybe some of that 30+ stuff, u no, the stuff the cancer council gives out. Lasts up to 8 hrs, so the label says. O'h yeah, it's waterproof, so u can still hose it down machine

11-01-08, 06:07 AM	#7 (permalink)
z80 Premium Member iTrader: (94) Join Date: Jan 2008 Location: Victoria Posts: 4,945	Just paint the lnb completely white with house paint.

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