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

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 )

it sounds like the dmd board is failiing

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;

Regards,
VOTIT

check closed captioning settings in the menu

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

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.

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...

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

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

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