Question about Dynex 19 in. LCD Flat-Panel HDTV

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Dynex 20/21 inch with dvd player... Picture freezes in both reception and modes. turning the tv off or changing channels will bring it back to life.

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I would suspect that your powersupply isn't giving the correct voltage to the mainboard (aka, tuner board) Once you open the tv, look for popped capacitors that are needing replaced. If you find any you will need to replace with the same uF value but a higher V value. This will correct the issue for the mainboard's voltage needs and you will notice that it will solve your problem.

If the power supply has been blown for awhile a mainboard replacement may also be needed, but I would try to fix the powersupply first to see if that corrects your problem!


Please rate and accept if this helped :)

Posted on Mar 17, 2011

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I have a universal remote that is able to control some functions on my tv. I am trying to get the tv into auxiliary mode to connect it to my dvd player. How do I get it into auxiliary mode?


Usually the tv will switch automatically to the correct reception mode as soon as it detects an input into the scart socket.

I have and have had a number of tv sets and they all do this, though I do remember many years ago needing to select the AV channel. I believe these days the AV channel is for the other audio/video input sockets.

I suggest you connect your dvd player to the tv, switch on the tv and then press "play" on the dvd.
You should be able to enjoy viewing without further effort.

If you change channel on the tv to check what is on, the dvd reception will be lost. To save the trouble of disconnecting the scart lead and reconnecting I use a manual scart distribution box so simply pressing the button provides the required interruption so dvd viewing can be resumed.

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I just bought 32 inch 2 hours ago, and am using it with an antenna. Almost every time I turn to channel 5, the remote freezes and I can't even use the buttons on the side of the tv. I have to...


This is my second set in as much days from Best buy. Exact same problem.
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We would be happy to help you get your TV back up and running. Thefirst thing we want to ensure is that all connected equipment is on.Wealso need to know what channel your TV2 is currently on, we will do this byturning the TV off then back on and noting the channel or input that appears onscreen when the TV is powered on, if the TV is not on channel 60 or 73, tune to60 or 73. Then Access "Modulator Setup"from TV1 by pressing"Menu", 6 for "System Setup", 1 for"Installation", then 5 for "Modulator Setup". Tune TV2 tothe channel that appears under "TV2 Out"on screen. If stillno picture and the mode for TV2 is "Cable", change it to"Air" and change the channel on your TV2 to 60, if it is already on"Air" then change it to "Cable" then change TV2 to channel73. If the issue is only on one receiver, unplug the DISH receiver for10 seconds and plug back in. The next thing we want to check is the connectionon the back of your receiver labeled "Home Distribution", this cablecarries the picture all the way to your TV2. Start by removing the connectionand screwing it back in, make sure all the connections going to your TV2 arehand tight. These steps should get your TV2 up and running.

We want to thank you for being a valued DISH Network customer!


Phillip Chang
DISH Network Customer Service Representative

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1 Answer

Picture blacks, tv needs to be turned to bring picture back. wii games do not go black


This is caused by your QAM decoder on hi def Sharp sets. You need to rescan for channels, turn off your TV then turn it back on to set to save the channels.The problem lies in the Tuner board and some Hi-Def signals can change frequency slightly due to improperly shielded cables etc. Verify that all of your cables, especially the Cable TV wire are firmly seated on your set. An improperly grounded cable television wire can wreak all kinds of havoc on reception.

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You should be connected to the AV input 1 slot. Change the input on the TV to Input 1

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Do you have cable or DVD player connected yet? If not, connect your cable to the back of the LCD via Coaxial cable. Next turn channel to 3 or 4 whatever channel you use for cable. Then use auto programming to find all of your cable channels. If no cable connect the DVD outputs to one of the AV 1 or Av2 inputs on the back of your LCD. Power on the DVD player and change your input to which ever AV you connected it to. You should see a blue screen and your DVD Player Icon.

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Does my toshiba model have a digital tuner?


Negative. Here are the specs for your TV/DVD combo: I hope this solution is helpful. Please take a moment to rate this solution.

Toshiba MD13M1 Dvd Type: DVD player - built-in
Media Type: DVD, CD, Video CD
DVD Repeat Modes: A-B repeat, title, chapter
CD Playback Modes: Program play, random play / shuffle, all tracks repeat, one track repeat
Tv tuner Analog TV Tuner: NTSC
Reception System: NTSC-M
Analog Channel Qty: 181 channel(s)
Channel Coverage: VHF:2-13, UHF:14-69, Cable:1-125
MTS Stereo: Yes
Secondary Audio Program (SAP): Yes
Video features Closed Caption Capability: Yes
Closed Captioning on Mute: Yes
Remote control Type: Remote control - infrared
Features: Back-lit buttons
Connections Connector Type:
  • 1 x headphones ( mini-phone stereo 3.5 mm ) - front
  • 1 x composite video/audio input ( RCA phono x 3 ) - front
  • 1 x SPDIF output ( RCA phono ) - rear
  • Composite video/audio input ( RCA phono x 3 ) - rear
  • 1 x antenna ( F connector ) - rear

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1 Answer

Channel Reception


It sounds like a defective tuner or a IF module as well. It may also be a defective capacitor(s) or cold solder joints inside the tuner circuitry. I woud suggest to use a VCR or a TV convertor connected to an Audio/video input to change channels instead of fixing it.
Good Luck.

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RCA tv


Check the signal type. It may be set incorrectly. Change the channel. You may be on a blank channel. Check to see if the TV is tuned to channel 3 or 4 if you are watching a videotape. Check the TV/VCR button on the VCR is in the correct mode by pressing the TV/VCR button on your VCR.

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