Question about Toshiba 57H83 57" Rear Projection HDTV

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Replace board toshiba 57H84

Do you know a part number, or where the part is located?

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They are located on the large signal board in the middle of the board all lined up in a row they will have board location numbers of 7412, 7406 and 7413

Posted on Nov 23, 2008

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Horizontal lines on toshiba 57H84 television until warms up


Set will have a "HYPER" BOARD causing this issue----there was a service bulletin with a photo of the board with 10 surface mounted filter caps that dry out and need to be replaced.

The failing caps tend to begin to regain capacitance when hot---gradually the wait gets longer and longer.

Board no longer available from Toshiba so 3 choices: replace the caps yourself (tricky and not easy) or have it sent for rebuilt to PTS electronics (about 200) or go shopping for a new set and retire this one.

Oct 31, 2012 | Toshiba 57H81 57" Rear Projection...

1 Answer

No picture, the little red light on the power button just flashes. I'm not sure if this is something relatively simple, like a bulb replacement, or if it's shot and I need to buy a new tv. Help! Toshiba...


Hello,


Your power supply board is dead, u know basic electronics' and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

Hope this help in solving the problem.....

Dec 31, 2010 | Toshiba 57H84 57" Rear Projection...

1 Answer

Picture flutters vertically


Many of these sets (57H84 etc) had a problem with the "Hyper" board.

It is a circuit in the set that processes all signal from the tuners, and all inputs.

Most of the time this problem shows up when the set is first turned on and after several minutes the picture goes to normal----the delay if you have this problem slowly gets longer and longer.

The hyper board is NO LONGER AVAILABLE-and the only way to correct it is remove it and send it out for rebuild.

There are about a dozen very small "surface mounted filter caps" on the board that dry out and cause the problem.

2 people with this problem were able to remove the board and replace all the tiny caps but IT IS NOT EASY AND NOT A TASK for a do it yourself person unless you have some real skill.

The problem usually looks like noise lines from left to right across the whole or part of the screen---if it started gradually---it is a bad Hyper board.

Let me know by responding with a comment if you need help or advise.

SD TECH

Aug 04, 2010 | Toshiba 57H84 57" Rear Projection...

1 Answer

My five year old Toshiba 57H84 rear projection TV has a pink tinted screen when you first turn it on, then after it warms up, the colors are all fine but then the picture has evenly spaced blue tinted...


Hi,Yes your problem sounds like the DMD board.This is how it works: http://electronics.howstuffworks.com/dlp1.htm Basically the light of the lamp goes through a tunnel that carries a color wheel(rotating disc with a gamma of colors that creates the colors on your tv)then the light of the lamp goes through the DMD board which is a chip composed of around 2 million pixels that creates the images and colors.When it starts to fail it will create black bars,pixelation,color distortion or white dots on screens. Here's a video that will help you find where the DMd chip is located : http://www.youtube.com/watch?v=0jr_9A5Xd2Q Have a blessed one!

Apr 30, 2010 | Toshiba 57H84 57" Rear Projection...

1 Answer

Toshiba 57h84 sounds like it is turning on but the only thing it is doing is the red light on the power button flashes no sound on picture nothing


CK your hori output Transistor and small blue capacitor round it feed the hori output 2k high voltage cap if they are OK then Replace both of your STK ICs they will have part number on them. For Parts Call Mats 1-800-628-1118

Dec 08, 2009 | Toshiba 57H84 57" Rear Projection...

1 Answer

Flashing Power light


Ur power board ic inverter is dead.
U need a new board.

Aug 19, 2009 | Toshiba 57H84 57" Rear Projection...

1 Answer

LENS


TURN THE SCREEN VOLTAGE DOWN FOR THE RED TUBE ON THE FOCUS BLOCK, THAT SHOULD BE IN THE FRONT BEHIND THE GRILL, TURN COUNTER CLOCKWISE.

Nov 05, 2008 | Toshiba 57H84 57" Rear Projection...

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