Samsung LN52A550 LCD TV Logo
Anonymous Posted on Dec 15, 2009

I have a samsung LN52A550 LCD tv set and it won't show anything with a HD signal. If I hook up a 480I signal the tv will work,but if I hook up the tv antenna or any other hd source to it,the tv goes crazy and makes noise and I see a whole set of vertical color bars like a test pattern generator,then hen the TV will click on and off. If I disconnect the HD source,then the TV will come on and say weak or no signal.

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Chi Chu

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  • Samsung Master 8,457 Answers
  • Posted on Dec 15, 2009
Chi Chu
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Get a roof or digital antena.Will give u better signal.HD 1080i CBS,NBS check that if u have that in 1080i well able to get HD on the set.U might have a 720p tv set.

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There's only one way to get that TV to switch from 480i (which is an SD or Standard Definition signal) - that's to provide it with an ED or HD resolution signal (a 480P signal is often called ED or Enhanced Definition while 720P, 1080i and 1080P signals are called HD or High Definition).


steve_con_14.jpg
The old standard yellow composite video cable.
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You will not get ED or HD signals through the old composite RCA phono jacks (usually yellow in color), either. You'll need to use an RGB (red, green and blue) component video cable, HDMI cable, DVI, or other type supported by both your TV and the video source (CATV box, Blu Ray disc player, Satellite converter, etc.). More on this, later.
steve_con_15.jpg
RGB cable.

steve_con_16.jpg
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.
steve_con_17.jpg
A DVI cable.
.
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Just remember you need a source capable of ED or HD signals and a way to get those signals to your TV. The yellow composite cable is from days ago and only passes 480i signals.

I hope this helps and good luck! Please take a moment to rate my reply - thanks!
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