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There is no picture, only a thin blue horizontal line

There is no TV picture or sound from any input: cable or DVD player. The screen only has a thin blue horizontal line.

Any idea what is wrong and typical cost to repair?

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  • collins3 Nov 28, 2008

    Is this easy to diagnose & replace in the home?

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  • 122 Answers

Sounds like the flyback / power supply

Posted on Nov 28, 2008

  • mpservices Nov 28, 2008

    Not really - the flyback hasto be soldered in place

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I have a Mitsubishi WD-62525 TV with a Blue Ray DVD player hooked up to it. When I play a standard DVD, the picture is fine but if I play a Blue Ray DVD the picture is scrambled. I hooked the same DVD...


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Replace vertical output IC and check capacitors in vertical
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Blue screens are a strong hint that your tv isn't picking up an image. Check to see if you have a firm connection on both your tv and your input device (cable box/ dvd player). You may want to disconnect and reconnect fully. Also attempt selecting other inputs. If you only have trouble with that one input, then you have a loose internal connection. Also make sure that your TV can display an image by trying to use the on screen controls.

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Here is the manual:
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A problem like yours is NORMALLY NOT the TV set's fault....it's the Cable.

I'll bet you see thin lines moving across the entire picture...they are slanted like this >> \ \ \ \
That's generally caused by a bad ground on the antenna cable OR it can be the cable box's MODULATOR.

Try using your VIDEO OUTPUT off of your Cable box and see if the wavy lines are still present. If they are the Cable box needs swapped with a good unit.

You can also verify this problem by checking your TV with a DVD player...no lines indicate the TV is fine.

If you have problems with the DVD player's picture, then you must have dried out filtering capacitors on the Video board IN the TV set...

And THAT is not an easy fix if you do see lines with your DVD player.

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cheap,,easy way is spend $3 extra a month to have your cable Co repair or replace any seeping cables or adaptors and/or splitters.

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I strongly doubt it's the lamp assy since you can actually see the blue screen. If the lamp failed, you would not see anything on the screen. This blue screen indicates to me that either the tuner is no longer decoding the signal, in improper input has been selected (ie: input 1 is selected while actual signal is on composite 1), or something of that nature. If you are getting audio then the input is selected properly but the video decoder has failed.

If your cable signal is going through a VCR or DVD, disconnect it from there and go directly to the TV (ie: bypass the VCR/DVD). If your picture comes back, there's some kind of problem with your VCR/DVD player.

If you have multiple inputs, try connecting an input signal to another input (ie: video 1, or aux from a dvd player) and see if you get a picture there. If you do get a picture, the whatever input you're currently using has malfunctioned.

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1 Answer

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