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Cheri Stegner Posted on Aug 30, 2014
Answered by a Fixya Expert

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Toshiba CF32H40 32"TV shrinking picture with solid black on bottom. What causes this and can it be fixed?

The screen started a little while back with a line in the bottom portion of the picture. Now the bottom several inches of the screen are solid black. It shrinks the picture to fit in what is left of the screen which is distorting the picture to some extent. Is this something that is fixable and if so how?

1 Answer

The Knight

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  • Toshiba Master 76,851 Answers
  • Posted on Aug 31, 2014
The Knight
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Joined: Oct 14, 2010
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Fault with the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/

5 Related Answers

snakehead

Henry Thomas

  • 1074 Answers
  • Posted on Mar 23, 2007

SOURCE: Picture is shrinking from the bottom

Hi you have lose solder in yor vertical section have a tech resolder it or that problem will cost you .hope you have already have it remedied.

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Anonymous

  • 81 Answers
  • Posted on Apr 07, 2007

SOURCE: shrinked picture of 29 inch television.

It is a pincushion problem. There is a bad cap and or a bad diode in the horzontal section.

Anonymous

  • 3130 Answers
  • Posted on Jul 22, 2007

SOURCE: screen shrinking

You have bad solder connections on the vertical output IC or on one or more of the surrounding components. Good Luck

Vista Electronics

  • 1694 Answers
  • Posted on Dec 11, 2007

SOURCE: picture is shrinking

Check power supply capacitors with ESR meter, esp. regulator
circuits.............verify model # off back to proceed...T.

Anonymous

  • 6966 Answers
  • Posted on Feb 19, 2008

SOURCE: No picture Thin line across middle of screen

Hi,

Most problems indicated by your description involved the Vertical IC. With your post "tap...pop back up" signifies a loose connection or to be more specific a cold solder. I suspect that no part(s) need top be replaced but would however require re-application of heat with the use of a soldering iron.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

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TV Picture shrinks down more and more until it gets to a line.

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hi there, you do have a vertical section problem and at the power supply section problem. do some test, check for some cold solder at the power supply section, test some electrolytic capacitor at the vertical section. ty
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You have bad solder connections on the vertical output IC or on one or more of the surrounding components. Good Luck
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Hi you have lose solder in yor vertical section have a tech resolder it or that problem will cost you .hope you have already have it remedied.
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