Question about Toshiba 42H83 42" Rear Projection HDTV-Ready Television

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Toshiba 42wt29b. screen keeps turning blue

When i switch tv on in morning after a few minutes it keeps turning off with the screen turning blue and no sound and it stays like that for a few seconds and then the picture returns but only for a few seconds. i am really distressed please can you help me. wait to hear from you. i tryed switching tv off from main switch and then back on again but no luck iv tryed to switch sky system on and off but still no luck, iv even changed all the old scart sockets with new ones but no change.

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Re: toshiba 42wt29b. screen keeps turning blue

MMMM Hard call here. The fact that it does try to come on blue maybe an indication that the power supply regulator circuit is good. It could also be a shorted blue tube and when it comes on its overloading the screen drive and the set goes into overload protection shutdown. The real way to see Would be to pull off the blue crt socket as well as the Hi Voltage lead on the crt and see if the set comes on without blue. If it does Your gonna need a pict tube. If it dosent then troubleshooting along the switched power supplys would be neccassary.. BUT I advise you THAT IF YOU HAVE NO EXPERIENCE TROUBLESHOOTING TV SETS PLEASE SEEK A PRO TO ASSIST YOU AS THERES VERY HIGH VOLTAGE INSIDE THESE SETS EVEN IF THEY ARE UNPLUGGED. GOOD LUCK

Posted on Jun 29, 2006

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Re: toshiba 42wt29b. screen keeps turning blue

First, try another video source, such as a dvd or vcr directly into the video input. do you still get the same problem? if so, it is the tv, if not, then it's your sky system (satellite receiver?)

Posted on Jun 29, 2006

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SOURCE: Power light flashing/ no picture

I have the same problem. The only way to get the TV to come on is to unplug it, but once you get it back on it turns itself off again in a few minutes.

Posted on Jul 19, 2007

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SOURCE: Toshiba TP50G60 Big Black Square Covering the screen?

try the closed caption adjustments. i had a tv that did the same thing and the captiong did it. turn caption off nd try.

Posted on Dec 19, 2008

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SOURCE: Toshiba tv screen goes black every 5 minutes with sound still on

Is it ok when you watch regular TV thru the cable or sat?

Posted on Sep 03, 2009

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Re: Toshiba 65 in Cinema Series - 12 years old. Color Separation. Green bow at top center of screen, red and blue double images tilting upwards toward sides. Sometimes clears unassisted after set has...

projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Here are more details and solutions for both.

Common Problem #1) Convergence has gone out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....

  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
  • TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.
Here are some pics of convergence problems.



Common Problem #2) CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

TV set after fluid change



You can see some more examples and find a fix using this link on Fixya

Jan 20, 2011 | Toshiba 65H82 65" Rear Projection...

1 Answer

Keep getting a blue screen. Avery so often the picture switches to a blue screen and than picture comes back and than a few minutes later a blue screen. Thank You

Sounds like a problem with source recognition. Could have a problem with input coming into the tv such as cable connection problem, loose wires, etc. Try reseting the cable box and removing and reinstalling all of the cables in the back and the cable box.

Oct 01, 2010 | Samsung DLP HL-P4663W 46" Rear Projection...

1 Answer

I have a Toshiba 50HM66 DLP TV. I turn it on and after a minute or two the screen goes black but the volume is still present most of the time. The picture may come back a few minutes later but go again.The...

I hope our expert would have provided you helpful info in chat session, if you still need further help, let me know the steps taken so far to solve the problem of your tv.

Sep 18, 2010 | Toshiba 50HM66 52" Television

1 Answer

Screen has been pushed in 42wt29b

If the protection screen is broken, Just take it out and replace it with a sheet of plexiglass. If the freznel lens is damaged I believe you will have a hard time finding a replacement. Good luck.

Mar 09, 2010 | Toshiba Projection Televisions

1 Answer

My ' plastic' screen is damaged, can i replace it? i have a 42WT29B

can go to any used tv shop and have them order a new one or you can order one through the company it comes from

Feb 27, 2009 | Toshiba 42H83 42" Rear Projection...

3 Answers

Blinking red power light - set will not turn on

Were the pale blue lines real thin in a slight diagonal from bottom to top of your screen? If so you either have a bad component in the blue drive, Blue CRT socket or your Blue CRT is shorted.Try removing the blue CRT socket and trying to power up your set for a moment without the blue socket attached to the tube. Be sure the CRT socket doesn't touch any components when you try this. Let me know if the set starts up without the blue.

Jan 23, 2008 | Projection Televisions

2 Answers

JVC Projection TV shuts down by itself.


Dec 15, 2007 | Toshiba 50H81 50" Rear Projection...

1 Answer

Sony KP-51HW40 51 in. Rear Projection turns blue

First reduse the G2 voltage for the blue c.r.t,and watch if the unit works for longer period (offcource blue colour will be not present).After reducing G2 voltage to blue c.r.t still behaves the same than c.r.t is faulty and you have to replace.
Pls count the red led blinking when it goes off,incase it goes to std by mode.

Dec 14, 2007 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Toshiba 42wh36p problem

you tv problem intermittent the problem is in the color circuit, vertical circuit.have a tech check your tv for repairs.good luck.

May 18, 2007 | Toshiba 42H83 42" Rear Projection...

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