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BIG PROBLEM i just bought a new samsung ps-50p91fd plasma tv and the whilst turned on the screen remains blank and there's a screeching sound. how do i fix it?

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This should be returned for either repair or exchange. This is a problem with the power supply. Do not open up the unit. It should be under warranty.
Dan

Posted on Mar 18, 2008

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Posted on Jan 02, 2017

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http://electronicshelponline.blogspot.com/
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Hello arunaik_6,

This looks as if a component has become thermally sensitive. The best way to find this is to use component cooling spray. It looks as if the problem is localized to the tuner section. Take the back off of the TV and turn the TV on, wait until the problem occurs and lightly spray the tuner section with the component cooling spray watch for any reaction, then if this does not work spray the Microprocessor and the LVDS section and watch for a reaction. The set should go back to normal when it does that section is the problem, try to localize the problem to one component. Then replace that component.

I hope this helps,

Thank you,

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http://www.electron-age-technologies-llc.com

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Weird colors problem


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I have horizontal white lines across the display of my LCD Tv, I've included more info in the details section below I have an Insignia model# NS-46L780A12 LCD TV MFG date July, 2011 , recently the display has been acting very strangely because the issue comes and goes consistently dependent to whether or not there's caption writing on the screen - examples being programming information , channel , time etc.....these info blocks are each in their own particular areas on the display , where this gets odd is when your watching live TV ,these info blocks are always filled in with whichever program that's on, the best description of this issue is from these individual blocks of written captions on the screen example - from the top , there will be a continuous vertical row of horizontal lines starting directly underneath said caption all the way to the bottom , this will happen consistently wherever there happens to be writing on the screens display, so you get multiple rows of these horizontal lines from top to bottom of the display and they'll stay there for the entire time you watch your show , some shows have more ,some less ,depending on the writing for that show , this is all on cable TV / live TV I guess you can call it , and when I use my Fire TV stick with certain apps , I'll get no vertical rows horizontal white lines on the display with the exception that I push the mute button or change the level of the volume and the lines start to want to show up and do partially just for a little while ,but almost as soon as the info on the screen disappears as far as mute/ no mute or the volume level , the vertical rows of horizontal lines go away , I should also say that in either case Fire TV stick or cable , these vertical rows of horizontal lines take a little time to develope all the way from where the caption lettering begin and same process for when they go away , it's not instant in either case , it can take up a couple of minutes for either process to happen , one other oddity I guess you could say , in watching a cable tv program where you may get let's say 5 vertical rows of horizontal lines top to bottom at the beginning of the process , if you happen to try to watch that show ,those individual vertical rows of horizontal lines of varying widths will eventually connect with each other horizontally across the display

Feb 18, 2018 | Insignia Televison & Video

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