Toshiba 42H83 42" Rear Projection HDTV-Ready Television Logo

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

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Toshiba 42H83 42 in unstable video

A while back my 42h83 Toshiba started having trouble with the picture. The top 6 inches of the screen would have a wavy effect. the waviness would go away after a few minutes. Now the waviness is constant and covers the whole screen. It will do it on all of the inputs. The TV menu is not wavy and is clear. Also when i activate the picture on picture, the second picture is normal. there is no repair company that will come to my house to fix the tv because I live so far away. if anyone knows what the problem is, is it a simple component to replace or are there special tools needed?? Thanks in advance for the help

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  • ryanmc Nov 27, 2007

    When I first turn on the TV the picture is wavy. I have hd cable box hooked into HD1 and have my Xbox 360 hooked into HD 2 . The screen is really wavy until i go into the hd settings on the cable box and the xbox 360. After I toy around with the 720 and 1080i the picture becomes clear again but with a slight wave to the screen but not that noticable. What do I need to do to ensure my tv works all the time?

  • grayesun Dec 22, 2007

    11/20/07 - 42H83 displayed full picture scramble for 1st half hour after start-up, then became a top 1/3 of screen with severe wavy vertical lines - graphics along "header" illegible. Wavy zone at top of screen seems to be increasing; TV has become unwatchable. Note: Wavy vertical lines 1st appeared on screen a few months ago (August 07).

    12/3/07 - Hyper board removed for replacement by local repair shop; 12/22/07, still waiting on repairs to be completed - NO football for holidays, I'm very disappointed & will know express my dissatisfaction to Toshiba.

  • Anonymous Dec 27, 2007

    I have the same problem. A service technician came today and took the video module in for service. He said it will take 2 weeks to repair.

  • SStang Jan 06, 2008

    i have the same problem with my toshiba. it started out as just a lil wavy lines at the top of the screen that would go away after a few mins. now it covers the whole screen and takes longer and longer to clear up (about an hour or so). but still has the wavy lines at the top always.

  • Anonymous Jul 28, 2008

    same story as everyone else, now everything has green tint to it????? maybe bulb gone out????



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Tech removed our hyper drive board 6 weeks ago, telling us this was most common problem with these TV''d think they'd stock the parts to repair most common problems...duhhh?

Posted on Jan 14, 2008


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Probable PIP sister board.Moderate skill & some tools needed.Advise==get a senior tech near you.

Posted on Sep 29, 2007


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My Toshiba 42H83 has a scrambled screen for about 5 minutes when it is turned on, if it has been off for a while. Once it warms up, it works fine. I have replaced the satellite receiver but this did not...

ok, you are talking about lines in the picture, it started where it would clear up after a few minutes but now it will slowly take longer?

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this sounds like a convergence loss... the most likely cause of this is what is known as stk's or convergenc ic(chips) have gone bad.. also it cound be the output resistors. most likely need replaced

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There is a large metal case behind the input board in the back of the set called the hyper board that needs to be replaced.Good Luck

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You have a bad hyper board part #23148024.  The part is NLA.  I have one in stock or you can have yours rebuilt at PTS Electronics 800-844-7871.

I’m happy to help further over the phone at


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Most projects in life are "easy",if you know how.Chassis will have to be pulled,convergence IC's replaced w/top quality parts to prevent recall.Some excellant soldering will be needed for prevent maintenance,for instance,the steel jumper wires feedig b+ to convergence IC's. RE-align in servicer mode==final step.
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