Question about Toshiba 57H81 57" Rear Projection Television

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Toshiba 57H81 picture bounces. Can't tell if horiz. or vertical.

Toshiba 57H81 is 5 yrs old. Have checked around on the internet, but can't find help. I've purchased a service manual, but it isn't much help. I can't get service tech to come to my home. Any advice?

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Unstable picture, wavy, jittery, and loss of sync are a symptom of bad capacitors in the hyper module. The problem is worse when the set is cold, but when warm the sympton gets less or goes away. In the latter stages the problem never gets better even after the set has been on for hours. There are about 6 surface mounted caps (10mf/16) inside the shielded Hyper module. The module is vertically mounted behind the jack panel and can be unplugged from its socket after unsoldering the 4 anchor tabs on the bottom side of the PCB. This type of repair should be made by a qualified technician do to the complexity of chassis removal and expert soldering skills.

Posted on Nov 25, 2007


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Toshiba Picture bouncing... becoming horizontal line

This sounds like a loose connection in the vertical circuit . The vertical IC would be the main suspect . These run somewhat warm and can the solder joints to expand and contract . Now what can also happen if you keep running it this way is the IC can become stressed out and finallly give out . Which will basicly give you one thin line side to side or some TV's when this part fails it will shut the tv down . Most shops depending if you can take it to them or if they have to make service the price will vary . Call around to a few local TV repair shops and get a rough estimate over the phone to what it might cost you . I would hope at best for a service it would not cost over $250.00 . Now if you can use a soldering iron you can save alot by soldering the loose connection yourself . Some experience would be required as some cabling straps would need to be loosened and plugs undone . Good luck and let me know how it turns out ( Team Tech )

Jun 19, 2009 | Toshiba 57H81 57" Rear Projection...

1 Answer

HLN507W Samsung DLp Horiz. lines

it sounds like the dmd board is failiing

Mar 13, 2009 | Samsung DLP HL-P5663W 56" TV

1 Answer

I hove a vertical problem

In vertical section change all electrolytic capacitor there,an resolder the 7 or 8 pins vertical IC and resistor associated to the IC pins.Post whatever the result.

Hope this may help you;


Sep 18, 2008 | Toshiba 57H81 57" Rear Projection...

2 Answers

Toshiba 57H81

check closed captioning settings in the menu

Mar 31, 2008 | Toshiba 57H81 57" Rear Projection...

1 Answer

Video input

Needs Hyper board repair = replace bad caps
PCB not available to buy outright........................T.

Nov 10, 2007 | Toshiba 42H81 42" Rear Projection...

1 Answer

Toshiba 57H81

Check all fuses in the power supply and look for any bad connrctions on the PCB. You are probably missing the 130 volt supply to the horizontal circuit. Common reasons are: Shorted horiz output transistor; flyback transformer, picture tube arcing , bad power regulator IC. In short, you need to get a qualified tech for this symptom. Hope this helps.

Oct 29, 2007 | Toshiba 57H81 57" Rear Projection...

1 Answer

Is my Toshiba 57H81 worth repair?

Bounce horizontally usually means up and down,which relates

to the vertical output IC. Solder IC301, IC401 pin connects==try

again.You can easily isolate "bounce" problems by lightly

tapping on the vertical IC heatsink....Let me know if you need

further assistance.....T.


PS. Though hard to find, a qualified tech could do that repair

in home for 300. to 400.00...

Oct 20, 2007 | Toshiba 57H81 57" Rear Projection...

1 Answer

No picture

57H81 57 in. Rear Projection Television Go to above unit for tip on your problem.

Jun 22, 2007 | Toshiba 55H70 55" Rear Projection...

1 Answer

Picture moving from top to bottom

you have a defect in the vertical circuit. most likely the vertical chip ,caps,diode and supply voltage for the chip..john

May 28, 2007 | Toshiba 57H81 57" Rear Projection...

1 Answer

Vertical output problem

you probably just need to resolder the vertical output IC. It will be mounted on a heat sinc. probably 7-10 pins. Part number may start with "LA" like LA7845 or similar, there are others though. You will probably see the rings around the solder joints on the bottom of the board. Good Luck

May 17, 2007 | Toshiba 36AFX61 36" TV

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