Question about Toshiba 36A50 36" TV

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Screen shrinks screen is reduced to 4" vertical in the middle & backround is black. sound & reception fine.

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  • jchambers770 Mar 20, 2009

    started with lines at bottom now only have pitchure in center of screen

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Vertical section is failing probably a bad ic or open resistor

Posted on Mar 02, 2009

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Screen went black with a vertical rainbow line down the middle


Failue of the vertical section, could be the drive, the power to the section or even some discrete componets. Unless you are familiar with electronics , get some help to ceck out on these circuits, could not be major but to get themain culprit will require good probing.

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This is a problem with the vertical circuit and can be as simple as poor solder connections within that circuit or defective parts. If you have no experience with soldering or TVs, this should go to a service shop. Expect a parts cost in the $30-$40 range for and IC +/or capacitors. If you'd like to attempt this yourself, please supply the exact make and model so I can post the parts required along with additional instructions. Please note that TVs contain potentially dangerous high voltages even when unplugged.

Thanks,
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1 Answer

Screen shrinks down to a narrow band of light in


You have bad grounds on the vertical IC. The grounds will need resoldering and check for weak caps near the ic.....they will overheat the ic...creating the bad grounds. Solder will expand and contract with heat and cooling of a tv. HMMMM you could also have a cold solder elsewhere on the board. Search and you shall find.

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1 Answer

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Picture is reduced to a straight horizontal line across the center of the screen.

Aug 17, 2008 | Televison & Video

1 Answer

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B+ line going hi.
probably bad capacitor on hot's collector.
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1 Answer

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Is the blue line running straight across the middle of your screen? If so its a vertical deflection problem. Possible bad Vertical output IC

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Bad solder connection in the horizontal pincussion circuit.have someone resolder.God luck.4tune

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