Question about Spectroniq PLTV-42HW68 42 in. LCD TV

10 Answers

The tv power on and off with no sound of picture

The tv is a spectroniq pltv 42hw68
the tv power on and when it comes on the name of the tv comes across the screen for a few second then the screen turns blue..
there is no sound or picture just a blue screen.
they say it stuck on a channel however, i cannot get the tv to change channels.
rich
7406331195

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  • 6 more comments 
  • raspeights Jan 07, 2009

    thanks however, the hard reset did not work. the tv still turns on and you can see the lights on the tv. no sound and no picture the only time it has a picture when the tv is first turns on and the name of the comes across the tv screen clearly for a for few second. the rest of the time it has a blue lighted screen.

  • raspeights Jan 07, 2009

    i connected the comcast cable another tv and the cable works fine. I STILL HAVE THE SAME PROBLEM WITH THE SPECTRONIQ PLTV 42HW68 TV
    NO CHANGE

  • raspeights Jan 07, 2009

    HOW DO YOU CHECK THE COLOR CIRCUIT, IS THERE A FUSE

  • raspeights Jan 07, 2009

    HOW DO YOU CHECK THE COLOR CIRCUIT FOR CONNECTION

  • raspeights Jan 07, 2009

    I CANNOT GET THE CHANNELS TO CHANGE
    I CANNOT GET THE MENU TO COME UP TO CHECK THE TV CHANNELS

  • raspeights Jan 07, 2009

    I PRESS THE INPUT BUTTOM ONCE BUT THE MENU WONT COME UP ON THE SCREEN. CANT CHANGE CHANNELS

  • raspeights Jan 07, 2009

    YES I DID A FORCE RESET SEVERAL TIME TO RESET.
    I HAVE PRESS THE INPUT BUT AND THE ANTENA BUTTON ON THE REMOTE. THE MENU DOESNOT COME UP

  • raspeights Jan 07, 2009

    IF I REMOVE THE CABLE WHILE UNPLUGGING AND WATCH THE TV SCREEN IT REMAINS BLUE

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10 Answers

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  • 6,966 Answers

Hi and welcome to FixYa,  
Initially, a couple of ideas you may want to explore, consider and/or try: 

  • almost always, a blue screen is an indicator of "video mute". The TV is not receiving a usable video signal that it can display;
  • you posted that you tried the xx" on another TV and it works, have you tried another video signal source  to go into the Spectroniq PLTV 42HW68? Say a DVD or even an old VCR;
  • the VCR would be ideal, you could try connecting using ANT/CABLE/RF IN and/or Video/Audio OUT;
  • if the VCR would also not work using the ANT/CABLE/RF IN just as where your Comcast cable goes into but would work if used  with the Video/Audio OUT to the Video/Audio IN of the TV, then it would most likely be a tuner block issue;
  • if the VCR (DVD) would also not work using the Video/Audio OUT to the Video/Audio IN of the TV, then it would be the logic controller, specifically the electronic source selector switch that is faulty.
Either way, it is a hardware fault and therefore could not be corrected with a reset, unplug or keys combinations.
This of course would require opening the unit, perform voltage measurements, determine faulty component and subsequent part(s) replacement. Further, a fair familiarity of electronic components/circuitry and safety procedures, use of a DVM and a soldering iron would be required. It would be to your added advantage access to a service manual or at the very least a schematic diagram with voltage readings.Should you be uncomfortable performing a DIY (do-it-yourself), perhaps your best bet would then be to seek the services of a qualified professional.

Good luck and Thank you for using FixYa.

Posted on Jan 07, 2009

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  • 142 Answers

It's a signal problem tv in in av mode or RF mode jsut set thru remote to av mode also chek cable wich is connected...

Posted on Jan 07, 2009

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  • Master
  • 1,952 Answers

Mirrors out of location. But it usually throws the picture offcenter, also. This can be caused if the set is dropped or kicked badly.

TWO: Out of focus. Can be caused by drift of the circuits or from amalfunction of the video drivers. You can check this by going to thecrosshairs and see if the lines are sharp and narrow. If not, then thefocus is off badly - most likely the blue gun. You may be able to setthe focus and other levels for brightness and contrast and color tooptimize this weakness as these are all somewhat interrelated,especially in the extreme settings. You can make adjustments for theseabove what is available from the OSD by getting into the service mode. See this web site for instructions on how to enter it. http://www.fixyourowntv.com/servicemenu.php

THREE: Worst case is the blue gun or projection tube is failing andneeds replaced - which I don't recommend due to the very high cost ofdoing so.

FOUR: And it is possible the blue gun/tube has been knocked out of alignment by dropping or moving the set.

I favor the focus adjustment as the first remedy to try. You can dothat yourself. But if it turns out the mirror is out of location orthe blue gun is defective you will need a technician for help on thoseitems.

Posted on Jan 07, 2009

  • 2 more comments 
  • mohammed marika thambi
    mohammed marika thambi Jan 07, 2009

    Normally, snow is an indication that there is no signal from the tuner.
    Bypassing the tuner by changing to a video input should show you a
    blank screen. If you still see snow, it suggests that the set has not
    switched from tuner mode to video. I would look for a missing voltage
    in the power supply. I wuold look for a missing 12V supply.

  • mohammed marika thambi
    mohammed marika thambi Jan 07, 2009

    There is a problem with the video processing or "driver" section for
    the LCD panel. It is possible that the panel itself could be at fault
    as well. This will be difficult if not impossible to diagnose
    remotely. Board swaps will be necessary to determine the problem

  • mohammed marika thambi
    mohammed marika thambi Jan 07, 2009

    Either the convergence IC for the blue is defective or has bad
    connections. There is a possibility that the set needs to be
    autoconverged as well.

  • mohammed marika thambi
    mohammed marika thambi Jan 07, 2009

    CHANGE THE CHENNAL BUTTONS

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  • 176 Answers

I had the same thing happen when we first brought our new set home.......

On the remote find the button that says "INPUT" press it one time.

A list box will pop up with your choices listed...if you have your television lead (cable) , no matter if it's cable or antenna, set the choice in the box to whichever input feed you used.

After you switch the choice in the box to the right input you will have channels.

Thanks for letting us at FixYa.com help you...I hope this helps you enjoy your new Television set...we do ours, the picture quality is great.

Thanks again from FixYa.com

Posted on Jan 07, 2009

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  • 67 Answers

Hello,

Usually, a blue screen (especially with the words "no signal" or such) indicates that there is no signal making it to the process or of the TV. If you are sure that the cabling is correct, and you have done everything that previous troubleshooters have suggested, then there is one more thing...

If you are on Cable and do not have a cable box, Press the INPUT button on the remote control (sometimes called TV/VIDEO) until you reach where stations or channels should be (CH3, etc.). If you press the menu button, does the menu come up? If so, then go to the channel portion of the menu to the Autoprogram section, and re-auto program, The TV should tell you how many channels that it finds. If the TV finds channels, but you can not see them, or if the menu does not come up, then it is a processor problem, and the TV needs to be taken to a professional repairman.

If you have satellite, and you are on the correct input to see your satellite box, then the above still applies.

The real key is if you see the menu come up when you press the menu button on your TV remote.

Hope this helps you...

Posted on Jan 07, 2009

  • waynejamescm
    waynejamescm Jan 07, 2009

    Hello,



    It is obvious that if you are not getting the menu to pop up on the screen with either the remote control or the MENU button on the TV itself, then the set needs to be taken to a qualified repair center, or the manufacturer needs to be contacted for repair information.



    Good luck.

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  • Master
  • 716 Answers

While Viewing The Screen Try Removing The Cable From The Rear And Seeing If There Is A Change.

Posted on Jan 07, 2009

  • Michael Fisher
    Michael Fisher Jan 07, 2009

    What Did The Screen Do When You Disconnected The Cable?

  • Michael Fisher
    Michael Fisher Jan 07, 2009

    It Should Say No Signal

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  • 449 Answers

The protection circuit is shutting down the set to avoid further potential damage.
check connections could be the color wheel going bad.

Posted on Jan 07, 2009

  • Jerry Parmanand Jan 07, 2009

    check your remote control is your tv on video?

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Hi raspeights

From the manual it states that this may be because of a poor signal. Do you have another tv to hook up to this cable to confirm this?


bestdarngood

Posted on Jan 07, 2009

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You can try a hard reset: Unplug TV from AC mains and remove all cables from TV. Wait about 30 minutes and replug to AC power and redo the cabling. Switch on the TV and see if it works.. Change the cable and check if it works ....

Posted on Jan 07, 2009

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Have you unplugged it for at least 5 minutes?

Posted on Jan 07, 2009

  • Jay Glendenning
    Jay Glendenning Jan 07, 2009

    Let us know where you stand and what you have done to this point.

    Thanks


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Or try EBAY.

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
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Sounds like maybe power supply, but I would check with flashlight 2 in from screen when the green light comes on to see if you have a picture, if so then you have a bad inverter board, if not then power supply problems. You can look for bad or bulged caps in PS

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1 Answer

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There is only one person I know of that could help you with this

Frank Z. SR
Audio-Tronics
Cherry Hill NJ
Phone 8566670160
open 10-5 m-f 10-2s sun closed

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did you check the control board on the back of the TV there might be a blown capacitor that could be replaced like on the polaroid ones found on this site. pretty clear info on that tutorial and could work on this one too

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