Question about Samsung TXL2791F 27" TV

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Shrinking picture The top and bottom of the picture shrinks leaving a squashed image.

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I stopped by a local repair shop a got some helpful advise.

Posted on Jun 08, 2008

  • Gorhob Perkins
    Gorhob Perkins Dec 24, 2013

    Thanks so much for sharing

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


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/

Aug 30, 2014 | Toshiba CF32H40 32" TV

3 Answers

Pictures shrinks.. Panasonic TC-20LM Television


Shrinking picture is a voltage regulation problem in the switch mode power supply, Possibly a cap used in the feedback circuit. Or an over current condition on the B+. This is a very tech intense repair because there is no magic bullet. If it is shrinking on bright scenes then you can bet it is a regulation problem, bright scenes draw more current from the power supply causing this effect. I would not suspect the horiz output because the regulation for this circuit usually comes from the main switch mode power supply. One diagnostic is to monitor the B+ going to the horizontal output and see if it fluctuates. If so you can bet it is a cap or optical coupler in the switch mode circuit.

Oct 10, 2009 | Panasonic Televison & Video

1 Answer

Picture is only in middle of screen, top and bottom of screen is blacked out


If you are watching widescreen format movie or tv programming on a non-widescreen tv, that is how it will appear. The widescreen is a wider picture so to show it on a less wide screen, it has to shrink down to fit. and leave blank space top and botton.

If not, sorry.

Sep 12, 2009 | Toshiba 36A40 36" TV

1 Answer

Picture shrinking


This problem can be repair, its only the vertical sect..have defective capacitor or lose/cold solder. by resoldering the area sometimes will solve this.

Jun 09, 2009 | Zenith IQD61W20 TV

1 Answer

GE 31


check electrolitc capacitors in horizontal circuit

May 09, 2008 | GE 31GT659 31" TV

1 Answer

Screen shrinking


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

Jul 21, 2007 | Toshiba 36A40 36" TV

1 Answer

Shrinking picture


Your TV has sevral loose connections in the tuner circuit as this is a common issue with the chassis you have in it. It is not an issue for the novice to repair. You will need a technician to look at it.

May 02, 2007 | RCA F27628 27" TV

1 Answer

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.

Nov 14, 2006 | Toshiba 36A40 36" TV

1 Answer

Shrinking picture


All symptoms indicate a problem in the vertical circuit,the first thing to look for will be loose conection on the vertical output IC,sometimes this IC goes bad completly and it needs to be replaced.If you are familiar with soldering electronics you can take care of it but if you are not too familiar you can play it safe and take it to a servicer ,it will be a lot less expensive than if they come to your house.Let Us know how it goes or if you need more information.

Oct 26, 2006 | Quasar SP-2722 27" TV

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