Question about Toshiba 42H81 42" Rear Projection Television

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42h81 RPTV I have a "wavy" pic that has lines and bars throughout the pic. It also jumps around constantly. I get the same thing with POP selected . It seems to be not as bad when first turned on then within minute ot two it is really bad, cannot even read menu or tell what the pic is. Any help is great.

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Re: 42h81 RPTV

Rebuild hyper board = replace bad caps on board................T.

Posted on Nov 23, 2007

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Toshiba/ 42H81 / hyper board

You can either yrplace your Hyper board, or replace all the serfice mount capacitors in it. The cap replacement fixes this 90% of the time.

May 09, 2012 | Toshiba 42H81 42" Rear Projection...

2 Answers

Mitsubishi rearTV has intermittent wavy lines running throughout

Do you have anything to test it in 1080i? Does it do it on all connections or just one? I had a similar problem with my TV that turned out to be a bad input board. Mine would only display 1080i through the Component connections. All others would show pink and green wavy lines. It cost me around 500 to fix it. Unplug the TV. Remove the back cover for the TV. Using a NON-metal object, or gloves, wiggle the input board (that has all the video connections on it) slowly back and forth and see if the problem comes and goes. You will have to have someone watching for you. If something is loose on that board, the problem should show itself. Narrowing down the problem will probably save you money on repair bills.

May 13, 2010 | Mitsubishi WS-65809 65" Rear Projection...

1 Answer

Pulsating pic

there is a digtal board incased in metal right behind your input board change all the 10uf caps this should fix your problum

Apr 22, 2010 | Toshiba 42H81 42" Rear Projection...

1 Answer

My picture is wavy and out of focus. when i touch the auto focus it goes through the function but ends with failure. it is a toshiba 42h81.

The most likely cause is shorted convergence chips and possibly a few pico fuses.

These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the 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,Mitsubishi,Zenith and others.
You can get a convergenece repair kit with instructions from the links below.

Here are some of the most common problems with these sets...

Problem #1) Convergence

Yours may have one or more of the following symptoms...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2
Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture

You can see some more examples and find a fix herebb0cf99.png

Apr 14, 2010 | Toshiba 42H81 42" Rear Projection...

1 Answer

Mitsubishi WD5725 DLP set. Picture is Ok before

The set has over 150 capacitors that could be causing the problem but it is at least 1 doing this. Contact Mitsubishi. Some people have been able to get new replacment TVs because of this problem

Mar 04, 2010 | Mitsubishi Projection Televisions

1 Answer

Green and pink wavy lines throughout. Picture

I am having the same problem and so far unable to fix,

Jan 22, 2010 | Pioneer SD-582HD5 58" Rear Projection...

1 Answer

Toshiba 65hdx82

The STKs are common and if you have an experienced electronics tech around they can replace them for much less money but the tech must have advanced soldering and IC exchange experience.

The STK ics, two of them, can be purchased on line for around $20 to $40 each.

Partstore has two models available - one for around $40 and another for around $55.

The part number is STK392-110 and if you google you can find them for as little as $6/each but I don't recommend the cheap ones as they are not reliable.

It takes a good tech around 3 or 3 hours to take the old ones out and solder in the new ones. Also, it is likely one or two resistors are burnt and will need replacing as well.

Nov 25, 2007 | Toshiba 65HDX82 65" Rear Projection...

1 Answer

Toshiba 42h81 rptv

Pull chassis--check all fuses,esp, F850 & F851.They protect
the B+ supplied to convergence circuit.They are found in the power
supply,on edge of the main board.On the signal board,locate the
large IC's mounted to heatsinks.IC part #  STK392-110.Between the
edge of the signal board and the IC's---locate two grey jumper wires
and some hard wire jumpers = solder them all,if you don't,the fuse may blow again.Next,replace IC's with Hitachi up-grade part
# STK394-160E....Reassemble...power on.....touch magic focus
and you are done....T.     ?????s-----Let me know...

Oct 28, 2007 | Toshiba 42H81 42" Rear Projection...

1 Answer

Wavy picture except when displaying a 1080p image

Elsewhere! Bad hyper board =bad caps on board need replacement = find a different tech who has heard of this repair or
have him research fixya / Toshiba/ 42H81 / hyper board ......T.

Oct 14, 2007 | Toshiba 42H81 42" Rear Projection...

1 Answer

Toshiba 42H81 - Constant jumping picture on scren

it needs the hyper module replaced might as well have em do the stk packs too its too old to be a lemon the part that was replaced was not new it was in someone elses tv and had problems there too the trick is to find someone that will fix it so it lasts

Dec 05, 2006 | Toshiba 42H81 42" Rear Projection...

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