Question about Toshiba 42H81 42" Rear Projection Television

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Bad picturre on toshiba tv

We have a toshiba big screen older model and a few months ago the pic starting gettin bad as far as it was very shaky and lines in it as soon as it got turned on but after bout 15 min it all went away! well now its stays that way..the color and sound are good just the picture is all over...Any idea what it could be? thanks

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  • pieps57 Jul 11, 2008

    um...is there anywhere i could get like a picture diagram of these components? just so i dont mess it up...and wheres the best place to get the replacement parts?



    thanks

  • katcandoto Aug 02, 2008

    the pic is wavy at turn on then clears up

  • jcromley Aug 15, 2008




    Fuzzy picture on my Toshiba until it warms up. Then it gets clearer. It has been doing this for a few months. Over time the fuzziness is getting worse.


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We have a 48 " Toshiba rear projection TV( Dramatic Theatre) and its picture is flickering from the last 1 year. We are unable to find any repair centre in Maharastra.(Nashik).
Pl provide help to find a repair centre in Maharashtra

Posted on Jul 17, 2008

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Good Day, pieps57;

Corrective Action: Remove the MVUP13 Hyper Module from the TV chassis, remove the top shield and replace the 10uf, 16v capacitors using Part Number 24619040. It’s recommended that all of the capacitors identified be replaced (Note: These capacitors are low impedance surface mounted aluminum electrolytic capacitors. Care should be taken to avoid damaging the PCB while replacing these capacitors.) CAPS: cx178, cx221, cx230, cx241, cx250, cx261, cx270, cx541, cx670 & c514, c5030.
Good Luck, Big Irish.

Posted on Jul 10, 2008

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The convergence going bad again on my Hitachi 51swx20b


Sounds like loose solder on the chips. Either that or they are failing. You can save money next time by doing it yourself with a kit from www.TvRepairKits.com

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My toshiba big screen tv is shaky and blurry


most likley your problems are on the hyper board in the set
it will sorta dance at the top and be shaking back and forth at a fast rate
it would require the hyper board being repaired or exchanged
you would most likley wont to locate a professional in your area to assist with this repair
average repair is 280 to 320 in my area

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Shaky distorted picture first 5 minutes when tv turned on.


Those have a problem with the capacitors going bad in power supply. Yes, it's worth having checked out because a GOOD shop will be able to fix the problem and not have to change a board. Very common problem with these sets. Mine did the same thing until I fixed it. Just do your homework when finding a shop. Call around and talk to other people in the area to see who they use etc.. Good luck. Could be a very simple repair. Have it checked.

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Distorted Picture


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.

Convergence problems are very common on all Projection TV sets including Sony, Samsung, JVC, Philip Magnavox, Panasonic, Akai, Pioneer, Hitachi, Zenith, and others. You can get a convergenece repair kit from the link below.

Common Symptoms include....
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  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
  • TV shuts off after powering on - TV may also make a chirping noise.
Here are some photos of convergence problems.

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Here is a quick test....

Using your original remote go-to the settings menu then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move RED and BLUE in all directions - up, down, left, and right.

If you can't move them in all directions or cant move them far enough your convergence chips are bad and should be replaced. This is a common problem.

Note: If you TV has as flash focus or magic focus button only try pressing the button. If it fails to fix the convergence your need to fix it. See below for a solution

93a1209.pngCONVERGENCE SOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses.
This is a a fairly easy DIY job if you know what you are doing. If you have never done this before we would advise calling a shop or if you want to do it yourself get a complete kit with instructions and support from www.TvRepairKits.com

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1 Answer

Big black box on screen


It has something to do with the closed captioning. He must have hit the closed caption button on your remote. You need to either turn the closed caption off or make another selection under closed captioning like cc1 cc2. Just keep making selections until the box goes away.

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When you turn the tv on the pic is sguiggly for a few mins.


Bad Hyper module = No longer available = rebuild only by qualified tech or send PTS Corp.....Toshiba part # 23786198
..............T.

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1 Answer

Toshiba big screen tv


Convergence amp ic bad
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
http://www.hdtvoice.com/voice/showthread.php?t=28929
Or send to ptscorp.com

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1 Answer

Horizontal lines


If this model has a "lint screen" or air filter, I would check to make sure the set is getting proper ventilation. Otherwise, you probably have a bad solder connection or capicators going bad, causing your symptoms. Hopefully you won't have to get a replacement Printed circuit board as they are quite expensive.

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Very wavy picture- gets worse when show has fast-cuts


First thing Do not beleive peeps about a bad card. Modules are not used in TV sets any more unles your talking about a complete board change out for a Zenith TV set. Toshiba sets do not have a card or board changeout!.. These peeps are crooks! A Toshiba set is repaired to componet level. It sounds like you may have a convergence problem or a problem inj the power supply involving the filter or couping capacitors. Seek out a pro whos an authorized servicer for Toshiba.

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