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Screen jump/bounce with main signal board input, hdmi input causes picture disintigration

When using coaxial, video or component the screen or displayed picture will jump slightly but constantly. I switched to the hdmi input after the issue started, no jump to the picture but a different issue developed. After about a week of using the hdmi the screen started to develop an issue with the horizontal and vertical pieces of the display. Such as, the screen will occasionally have a 1-2" blue strip at the top. The screen will also split down the middle and half will twist and scatter different from the other half. The entire time this happens the screen or transmission is visible. After powering down and turning the set on almost immediately it will correct the issue but only for 15-20 minutes or less. I suspect since the main input and the hdmi input boards are separate that the issue might be a power supply, can anyone give me some guidance. Thanks

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  • 3 Answers

SOURCE: Vizio GV42LHDTV - No video inputs

my 42 also went black, and the "vizio" logo in front indicates as if it is turned on, it clicks on and off, but just has no output on the screen, meaning not a black screen, just a dead, no image, even when the system has clicked on

I tried turning off, on, unplugging, letting it sit (kind of like a reboot wishful thinking), removed all connections in back, (nothing still, not even the blue screen) just nothing.

What a shame, I had the unit less than 6 months, and now this? I have work to do, and I can't get it done.

Posted on Mar 23, 2008

  • 1 Answer

SOURCE: red static in black background ~ thin line running down center

Robjrpena,

Did you find a solution to your "red dot" problem? I'm having the same issue :(

Thanks John

Posted on Jun 18, 2009

techman007
  • 1112 Answers

SOURCE: I have a Samsung LE37R74BD

Hi:a
Have the power supply checked for faulty puffed up capacitors. You are expriencing low supply voltage to the main board.. There could also be a thermal intermittent on the main board or the TCON board. But for the most part this symptom is related to the power supply.

Posted on Dec 08, 2010

DrewPalmer04
  • 325 Answers

SOURCE: Over time, my 2007 Samsung LCD TV, model LNT4665F

This TV is known for powersupply failures and this can be effecting the incoming voltages into the mainboard (AKA tuner board). This would cause the noise. Please have someone look into the powersupply and check that the proper voltages are coming from it. If they check out ok, you need to replace your mainboard.



Please rate if this helped :)

Posted on Mar 30, 2011

gopakumarg43
  • 72670 Answers

SOURCE: Having an issue with a

Hello
After replacing the main board, you have to do some service adjustments to it. It is a skilled work indeed. You must have it schematic [service manual] to do the work. All adjustment should be done is in it. Without making that adjustments very keenly, the other boards won't accept the new main board. OK.

Posted on Sep 21, 2011

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Here is the link to the full manual:
http://support.sony-asia.com.edgesuite.net/consumer/IM/4110401121.pdf

Before connecting your devices...
The signals that enter the TV and connected devices will need to be output in the correct format using the suitable connections. Below are the different types of video connectors. When connecting the TV, use the inputs that are available on your devices that provide the best video performance.
Video performance level Name Aspect Signal transmitted Separate audio connection required arrw.jpg HDMI cnn_hdmi.jpg Picture + Sound No DVI*1 cnn_dvi.jpg Picture Yes
l.jpg r.jpg
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HDMI The High-Definition Multimedia Interface (HDMI) is an all-digital audio/video interface capable of transmitting high definition video and audio signals. HDMI provides an interface between any compatible digital audio/video source, such as a set-top box, a DVD player, a PC, a video game system, or an AV receiver and a compatible digital audio and/or video monitor, such as a digital television (DTV). DVI The Digital Visual Interface is capable of transmitting high definition video, but does not transmit sound. You will need to use the audio connectors of your device (usually Optical/Coaxial digital, or RCA). It is possible to connect an HDMI device to a DVI device using a HDMI to DVI adapter. Component video Component video is an analogue connection. It is capable of transmitting high definition signals. Component does not transmit sound. You will need to use the audio connectors of your device (usually Optical/Coaxial digital, or RCA) S-Video Separate video, abbreviated S-Video and also known as Y/C is an analogue video signal that carries the video data as two separate signals (brightness and colour), unlike composite video which carries the entire set of signals in one signal line. S-Video, as most commonly implemented, carries standard definition video. It does not carry audio on the same cable. Composite video Composite video is an analogue video (no sound) format. This is the connector you should use if you do not have any other connector available, in terms of quality. RF/Coaxial RF Coaxial Cable connection is used for transferring television signals (audio and video) originating from an antenna or cable box to a Television.



Hope this was helpful to you.
Goodluck
Elect_Comp

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Turn the PVR on. Turn the TV on.

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