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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Too Old ??
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<blockquote data-quote="Channel Hopper" data-source="post: 47393" data-attributes="member: 175144"><p>Many problems can occur after the LNB is installed</p><p></p><p>The slight amount of moisture present at the time of install (maybe it was a damp day) can play havoc further down the line.</p><p>Commercial systems are usually supplied with a dehydratir system to blow dry air into the air spaces within the feed, domestic LNBs are lucky if they contain a small amount of dessicant. Many branded ones forgot to fit the bag inside</p><p></p><p>Natural decay of the feed horn because of the sun, airborn particles, moisture in the F plug and ingress through the tape to the centre conductor. Even dielectric corrosion between two dissimilar metals in the feed start the downturn of performance</p><p></p><p>Temperaturewise the LNB over a few years is subjected to heat and cold differentials exceeding 100 degrees on an almost daily basis, causing drying of joints, poor conduction in coils/resistors and seepage of oils in the capacitors </p><p></p><p>Electrically, the power from the receiver will fluctuate, and all the components are at the mercy of the grade of regulators and smoothing circuit installed. Eventually a spike will get through to knacker the test bench results of what is effectively a disposable part of the satellite system </p><p></p><p>Replace it whenever you feel like climbing the ladder. Like an oil change for a car/motorcycle, you could do a lot worse for peace of mind under £20.</p></blockquote><p></p>
[QUOTE="Channel Hopper, post: 47393, member: 175144"] Many problems can occur after the LNB is installed The slight amount of moisture present at the time of install (maybe it was a damp day) can play havoc further down the line. Commercial systems are usually supplied with a dehydratir system to blow dry air into the air spaces within the feed, domestic LNBs are lucky if they contain a small amount of dessicant. Many branded ones forgot to fit the bag inside Natural decay of the feed horn because of the sun, airborn particles, moisture in the F plug and ingress through the tape to the centre conductor. Even dielectric corrosion between two dissimilar metals in the feed start the downturn of performance Temperaturewise the LNB over a few years is subjected to heat and cold differentials exceeding 100 degrees on an almost daily basis, causing drying of joints, poor conduction in coils/resistors and seepage of oils in the capacitors Electrically, the power from the receiver will fluctuate, and all the components are at the mercy of the grade of regulators and smoothing circuit installed. Eventually a spike will get through to knacker the test bench results of what is effectively a disposable part of the satellite system Replace it whenever you feel like climbing the ladder. Like an oil change for a car/motorcycle, you could do a lot worse for peace of mind under £20. [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Too Old ??
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