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sometimes you can have weaker signal, and pictures freeze...
it can be caused by bad weather, by thunderstorms, heavy rain....
you can't do anything about it, just get stronger antena....it can improve your gain from signal, but never for 100%
This can be due to poor reception on that particular channel. Also, this may occur under certain weather conditions, such as rain. You can try reorienting the antenna or doing a channel scan which may help
This does not but does in one way make some sense(I had to read your question a few times).
The key here is the fan does not turn on-----If any of the fans (lamp or others to a lesser degree do not come on: The lamp fan must come on or in a short amount of time--it should turn the set off and some have a lamp light and a temp light----
The set monitors the temperature of the lamp especially when set is turned off---it will not turn the lamp off until it cools to a specific temperature is reached----hence if set on for while and just unplugged which will kill the power to the lamp fan the lamp or even ballast that drives the lamp can be damaged.
Voltage to the fan can be measured and it must come on when set is powered up-----issue could be either fan is bad or no voltage is reaching it===most 2 wire fans will have the voltage marked on them--24vdc equals 24 volts Direct Current etc.
If a fan NEVER COMES ON (especially the large lamp fan) sooner or later something is going to get melted or fry.
Your description is a very good one but the issue is a bit rare (fan dead).
I would if there first check for voltage at the fan when set is turned on---if its there but fan not running the fan is bad.
Seen a few where dirt on the fan or even moving the fan blades made the fan kick on but by then you KNOW it is bad.
Let me know if you have questions or what you find.
With all antennas you MUST ensure that it is all OK, physically check, there are no whiskers of braid caught between Inner & Shield, Make sure the center pin IS contacting in the socket. Check The connections at the Antenna end. Check the earth braid. If you can check continuity with a meter, check for "Shorts" between braid & center conductor. make sure it is Pointed at the Transponder... even a little off will give signal loss. rain fade is a huge problem unfortunately.
It's happened to me too, it could be a loose screw thats meant to hold the dish steady, it could also be more serious and could require a new feedhorn or another part. Leave it be for a few weeks and if it gets worse call sky, if thats your provider, or price around for a local technician.
I have no knowledge of your particular machine, only from A/C's (and heatpumps) in general.
All systems I've ever came across are designed to be subjected to
whatever weather conditions so I doubt the actual machine would be the
problem. It would never have been approved if it can't stand some rain,
snow, hail, what have you. My own A/C / heatpump is always on, even during thunderstorms.
More likely it could be a bad installation causing the problem, wrong
type of cabling, inappropriate housing for electrical connections and
switches, etc. This, in turn, could have damaged the machine if you
have bad luck.
If you are unsure about the status of your installation, I'd advice you
to contact professionals to troubleshoot and correct the problems. It is especially important to get it absolutely right when it comes to electrical installations outdoors and in wet environments.
Signal Fade And Loss ~ Important, especially during winter!
Keep in mind that satellite broadcasts occur directly from fixed satellites in space to users. UPLINKS TO that satellite can happen from almost anywhere in the world! This includes broadcasts from remote studios, satellite vans and trucks.
Even signals from the main providing studios are susceptible to weather conditons even tho they have huge, high-gain transmitting dishes!
Weather is a major factor for both the uplinks and downlinks! Storm clouds can block the signals anywhere in the signal path(s). Rain clouds do too ~ even if it's not raining yet. Water-laden clouds make some of the BEST signal attenuators.
So one may have a gorgeous day in San Diego (let's say), but storms back east could trash satellite reception at his location and potentially everywhere else!
As you know, weather conditions all over the US are changing constantly with many severe storms occurring this past week and during any winter. In fact this week there was total signal loss on several satellites and I suspect storms back east were a big factor.
So it could have just been issues of timing for you. The UPLINK had intermittent problems with signal paths semi-crippled by weather... YOUR weather was CLEAR, but your reception was far from problem free ~ only because of weather problems elsewhere.
If you see intermittent satellite reception do check out the weather... especially back east.
The digital signal is sent over UHF(13-69) channels (unless you are in Chicago which uses VHF( 1-12). You will have signal loss during rain. You can get a stronger antenna and put on a pole outside your home which will help keep the signal stronger.