Question about Toshiba 57H83 57" Rear Projection HDTV

3 Answers

Our 4 year old Toshiba 57H83 will suddenly turn into a blank screen (sound OK) for 2-5 minutes, then return to normal, then show a broken picture with vertcal bars.

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  • lehmann Jun 25, 2009

    Anything more specific would be helpful. The screen will suddenly turn blank, although the TV's screen menu text can still be seen when it does. A minute later, the screen will momentarliy dim, or show a random pattern. Could this be the projection tube?

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3 Answers

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  • Master
  • 7,191 Answers

Hi,

Your problem dated Jun 25 2009 was re-posted today. If it has been already resolved, kindly ignore this message.

Thanks for using FixYa

Posted on Aug 09, 2010

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  • Master
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This problem is very common among just ocnce it solidation get lose which does pass the current properly... you may go to electrition and ask him to Solidate you Tv

Posted on Jun 25, 2009

  • Azum Saeed Jun 26, 2009

    This problem is very common among.. ocnce in a while its solidation get lose which does not pass the current properly... you may go to electrition and ask him to Solidate your Tv properly do also get check it power distributer supply....

  • Azum Saeed Jun 26, 2009

    yes it can be projection tube ..but plz get your tv solidation completely ... it also can be the ICU's of your tv

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  • Master
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The standby mode but in the shutdown mode. this could be from several things. like a bad regulator IC in the main supply, or a set of bad capacitors between the main power supply and the sweep power supply, or maybe a shorted audio output IC oer a shorted convergence IC or could even be because fluid leaked down onto the Printed circuit board, from the CRTs. If your not a tech Please call one as it not a place for someone to be tinkering around with!

Posted on Jun 25, 2009

  • mohammed marika thambi
    mohammed marika thambi Jun 25, 2009

    You say you are "pretty technical", however, you don't know that this is a CRT-based RPTV, which doesn't use a bulb?



    There are many things that could be wrong.
    IF you can find parts they will be expensive. Figure around 500 for
    repairs because they will not be easy to trouble shoot down to a
    certain module or part that needs to be fixed with out the skills that
    a true TV repairman has. Nothing is plug and play but all circuit board
    replacement or unsoldering and re-soldering new resistors, capacitors
    or other.


  • mohammed marika thambi
    mohammed marika thambi Jun 25, 2009

    you did not get 100% of the carbon off the
    board beneeth the components. Soot [ i.e. carbon black] is conductive, Also, if the boards
    were covered with soot [?] it is probable some of the vertical components have heat stress
    damage. Check the coupling capacitors, the diodes, and supply voltages to the vertical
    area, also look for ring cracks in power deflection circuits.

    The IK circuit is killing the
    video, set is designed to do this to protect the tube


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1 Answer

Toshiba 57H83 and no longer get any sound. Any


Most often No Sound with Toshiba 57H83 is:

1. TV has a Sound on-off switch on the input panel at the rear of the TV. Very hard to see, black on black. Used to turn off speakers if you use a separate or external sound system for speakers. Usually gets moved while connecting hd cables or dusting and vacuuming in cramped space at the rear of the TV.

2. Someone accidentally changed Sound settings with remote to CC (closed caption) or SAP. Turn off in sound menu and save preference.

3. Sound input plugs from external cable or sat box unhooked or wrong input.

Toshiba 57H83 no sound fault is not common. If you still have no sound, get local service.

Or troubleshoot yourself to determine if Tuner, IF, processing, sound demod, switching or sound output circuit is smoked. Then make an installation plan.

easyab

ConvergenceRepair.com

Feb 28, 2010 | Toshiba 57H83 57" Rear Projection HDTV

1 Answer

Blank Display, using exernal monitor, can see display info w/flashlight, display flashes light at startup


You could have a defective screen - a defective inverter or a CCFL lamp.
To determine if you have a LCD screen or video card problem, read this and follow the instructions.

Defective CCFL backlight, it may have the following symptom:

  • Screen flashs on red/pink and off.
  • Picture stays on in red and slowly be come normal.
  • Picture flickering with dim display.
  • Picture flickering on and off.
All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp

Connect an external monitor to your laptop and power it up, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight.

Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out www.lcdparts.net for parts, repair service and DIY info.

May 03, 2009 | Toshiba Satellite A135-S4407 Notebook

1 Answer

My toshiba 57h83 has a black rectangle in the middle of the picture what do i do


Check your closed-caption settings and make sure they are turned off (or set to "caption 1" or "CC1" if you really want them). You will find the captions set for "text" now and that's why you see that black box sometimes. The set is blanking out a part of the screen for the text that never shows up. Most TVs have a single button to set captioning, so it's easy to press it and change modes without knowing it.

Please take a moment to rate this solution if it's cleared up your screen, and thanks for asking here!

Jan 15, 2009 | Toshiba 57H83 57" Rear Projection HDTV

1 Answer

Toshiba 57h83 wont do nothing


that relay is supposed to engage power to the tv boards that control the screen.
you will have to take it to a oualified service center , because they have access to parts that are needed for repair

Oct 17, 2008 | Toshiba 57H83 57" Rear Projection HDTV

2 Answers

Lines in picture


I had this problem around the time my TV was 3 years old. I ended up having to get it repaired at a TV repair place, it cost me $375.

Sep 24, 2007 | Toshiba 57H83 57" Rear Projection HDTV

1 Answer

Toshiba 43 inch projection set


Possible bad solder connections in convergence circuit or vertical deflection circuit. This happens in alot of equipment. After warm up, expansion of joint pulls connections loose. Recommend not running like this, could cause component failure.

Dec 22, 2006 | Toshiba 57H83 57" Rear Projection HDTV

1 Answer

Initially No Picture when Turned on but sound normal and 5 minutes later Picture is all RED and then Picture becomes NORMAL (all normal colors)


theres a high voltage block that all three of the anode leads attach to and sometimes a small crack happens across this block and will not let some or all of the crt's get the high voltage all at once untill it heats up a bit. now if this is not your problem i would make sure that all three crt sockets are attached to there tubes all the way as maybe justy maybe there loose and will only work after ther expand a bit. Now another problem that could cause this problem to occor origially would be that someone left off a crt ground strap and the crt arched and popped and caused the problem with the High voltage block. And no I cant see a tube being bad then comming on at first UNLESS when you say the red comes on is the picture all red with small retrace lines(small white lines)in the screen with no picture except for red???? No video only a red blank screen is what i mean. If thats what its doing then yes Ive seen heater to cathode shorts on a picture tube that would cause this problem but to be sure your really gonna need to have the set looked at.. Good Luck

May 17, 2006 | Toshiba 40H80 40" Rear Projection...

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