Question about RCA TruFlat 27F520T 27" TV

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RCA 27F520 Shutdown after a few seconds

I've seen many of these problems posted here, but none quite exactly like this.

I got this TV from my inlaws as they couldn't get it to work and just went out and bought a new set.

The TV will come on, however, as the picture warms up you only see a horizontal strip about 1 to 2 inches from top to bottom right in the middle of the screen. I'm guessing there's a "curtain effect" as the set turns on because I can see something spreading out starting in the middle. About as soon as the "opening curtain" gets all the way across the screen, it'll start to go back in. Once the "curtain" meets back in the middle the set will power off.

I've found that if I hit the channel change button I can delay the TV from turning off, but once the "closing curtain" effect starts I can't stop it.

I can read the Volume bar if I start pressing the Vol + or Vol - buttons, but it will not stop the set from turning off.

After reading how to get in the service menu I tried this, and to my surprise it worked, but I still can't read anything as the screen never expands from top to bottom, it only stays in the middle in a strip left to right. The set will not turn off by itself once in service mode but I can't read any of the menus. I can see static or snow as I don't have any cable hooked up to it, but again, compressed down from the top and bottom.

I've tried making an adjustment to the "Screen" and "Focus" settings, which I can see make changes, but do not help this problem.

I found the service manual for this set but I can't really find something to relate to have a "squished" screen and it powering itself off after a few seconds.

TIA for all the help.


Posted by on

  • grannybear37 Dec 23, 2008


    1. tv turns off after a few seconds.when turned on , all different colors are on screen.


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You have lost the vertical ic and maybe resistor or capacitor.
but you also maybe loosing the horizontal ic
you will also have to check the voltages on the flyback transformer that go to those circuit's to see if they drop or are correct

Posted on Dec 22, 2008

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