Question about Samsung LE40R74BDX 40 in. LCD Television

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Digital - Weak or no signal digital coax when hdmi dvd player on

I have a Samsung LN46A630 and I normally use it to watch tv through a coax antenna. Normally all channels (digital and analog) show just fine. After I bought the TV I also got a Phillips 5 disc hdmi dvd player with sound system. I have found that if I turn on the dvd player while watching the tv I get a "weak or no signal" message on all of the digital channels. All the analog channels work fine.

Any suggestions on how to fix this without simply turning off the DVD player? (I want to use the dvd player to play sound for the tv).


So to reiterate.
1. TV is connected to antaenna via coax.
2. TV is connected to DVD player via HDMI cable.
When DVD player is off all channels work fine and I have great signal strength.
When DVD player is on I get a "weak or no signal" message for all digital channels.

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  • kevin_mic Apr 02, 2009

    Based upon your response I have been able to diagnose the problem further. My DVD player is a panasonic dvd player with a digital transmitter (for the rear speakers). If I unplug the digital transmitter box from the DVD player then my digital antennae signal comes through fine. So the DVD players digital transmitter is causing my tv to not recognize my digital antannae signal.

    Is your recommendation still to move the DVD player away from the TV? I really cant move it must farther away. The TV is on a TV stand and the dvd player is in the first shelf underneath the TV. Is their a way I can shield the tv from the DVD player?

  • Anonymous Mar 21, 2014

    No problems with the other channels after the switch over to digital,only SBS channels has no signals

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If u have placed your DVD next to your tv ... just maintain distance between then and check out

Posted on Apr 01, 2009

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Posted on Jan 02, 2017

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If i connect the hdmi cable i do not need an antenna cable?


You need an antenna cable to be connected to something that is connected to your tv or you will not get a signal!

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Do you mean the Samsung DVD-VR500E? The following steps should work for most DVD recorders. (In the US, you use the AV Input with an RCA composite cable or the RF input.)

If you get a digital-to-analog converter (set top box) and your current antenna provides the OTA signal at your location, then yes you will be able to record a digital program. Connect the set top box to AV1 or AV2 (the SCART inputs). Then use the Input Sel (under PR mode) to select the input. (Alternatively, connect an RF modulator to get the signal to the coax input from the STB to the recorder.) See page 75 of the manual for the DVD-500E for details on setting the input for recording: http://downloadcenter.samsung.com/content/UM/200410/20041023105238671_00500A-VR300E-XEU-E-B.pdf . Some DVD recorders only record on the TV (coax) input. In that case, you will need a set-top box with a RF out or an RF modulator but you can still record the digital program.

A dual tuner set top box will let you watch one program and record another if both the TV and the recorder are connected to the STB. If your TV has a digital tuner, you can split the incoming antenna signal to go to the set-top box and the TV. (Then you can also watch one program and record another.)

I prefer to use a switch instead of a splitter to reduce the signal loss. However, this forces me to record the program that I am currently watching. Since most of my recording is for time-shifting, this doesn't cause me a problem.

This site, http://www.ricability-digitaltv.org.uk/pages/products/stbs/stb_search_results.asp , has a list of reviews of set-top boxes for the UK. I know in the US, it is harder to find new converter boxes. However, they frequently show up in the used market as people replace their older TVs. This may apply in your region as well.

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1 Answer

Im trying to connect my unit to my tv to record shows and i having trouble doing so please help i am hooking it up wrong


For OTA or CATV signals, you need to daisy chain the coax from the source (antenna for OTA) to the coax input on DVD recorder and then the coax out to the coax input of the TV. If you have a set-top cable box with an incoming CATV signal, it should be connected between the DVD recorder and the TV.

The unit can tune in and record 480i (SD) ATSC (OTA digital), NTSC (OTA analog), analog CATV and digital CATV channels.

A satellite receiver or a non-CATV cable box should get the incoming signal first and then have their composite video output (A/V) connected to the DVD recorder composite video input and then their coax (RF) output (if present) gets connected to the TV. For these, you would record from the IN1 or IN2 (press Select Input) instead of selecting a channel. Then connect the composite video out on the recorder to the TV's composite video in.

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Separately, you can connect the video signal when playing DVDs via composite (good signal) out and component out (better signal) out to the TV's matching input. For the component video, the sound is carried on a separate cable. Then set the TV to the input source.

In the case of wanting to watch a VHS tape while taping to a DVD, do not use the Component video source, set the TV to Input 1 (composite).

I hope this helps.

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(you can get a copy of the manual here: http://tv.manualsonline.com/manuals/mfg/panasonic/dmrez47v_dmrez475v.html )

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1 Answer

Can you tell me what are the functions of the two hdmi inputs, and the one hdmi output ,as my cable only works via the tv to the dvd player and a coax from dvd to the coax on avr, so hdmi on avr is...


Let's treat this as TWO functions - audio and video.

Your best video would be HDMI output (audio & video) from the cable box and EACH other video source (BD/DVD) directly to your TV and receiver. But, I'd still WATCH the video from the direct TV connection. The fewer intervening cables and electronics, the better.

Your best audio performance will come directly from each multichannel source via a digital (HDMI, coaxial or optical) cable to the receiver. I would LISTEN to audio through the receiver for best quality.

See a trend here? TV's best at video; receiver is the master of audio.
And neither one adds much by handling the other. Usually the opposite.

You mention coax. Do you mean coaxial digital audio????? As coax is also shorthand for the thick black cable bringing video to most cable boxes, connecting antennae to TV's and such.

You don't actually define what the problem is. Only YOU can be the judge of what 'better' is.

There are a multitude of (mis)settings you should master before declaring a hardware problem. I'd dive into the manual.

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Tv converter


its not the tv the tv, the tv is just a monitor the dvd is suspect as the tuner may be ...old, damaged ect. and last the antenna a new ant is not required for hd however you are not saying you want to get hd you want to get rid of your satellite receiver, HDMI is the best signal for video you can use, however the source is the most important thing if it sucks or is not to top quality, like the HDMI circuit then you will get a reduced picture quality. the dvd recorder? is suspect as is the antenna you are using, 75 ohm coax will not produce good results.

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