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The seine board on my toshiba tv has gone out and I'm told That I can unplug the board and it will work with cable .

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  • tdrofam Jul 16, 2009

    The picture will show up for a second when you first turn it on and then go out ,when I place a dvd in it the sound will play but no picture.I would like to unplug the seine board but I do not know what I'm looking for.I've tried unplugging several white plugs but nothing.

  • tdrofam Jul 17, 2009

    Thanks for the info ,but I've had the tv unplugged for several weeks and after reading the problems and what others had done decided to give it one more chance.If I knew were the seine board was I would try unplugging it. the tv is about 16 month's old and I hate to loose it.Any more suggestions,Thanks Thomas

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  • Master
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Hi,

since audio is working it means it is well connected to your TV

for your picture try to relocate,
means to unplug it to the original position

and plug it to other video input

say your DVD player is connected to video 1 move it to video2


and watch if the same problem occurs


for coaxial cable connections:

have the cable disconnected first and power up your unit and see if problem still occurs.



having done that and still not having picture, you might have a circuit board failure inside the unit.

it might not power up well if the fault is repaired and corrected.

possible causes might be:

a) power supply - not having enough to power up the horizontal deflection circuits

a leaky capacitor perhaps

b) horizontal deflection circuits- might have partially shorted flyback, a shorted horizontal output transistor or both

hope this helps, thanks for using Fixya!

Posted on Jul 18, 2009

  • Rommel Cana
    Rommel Cana Jul 27, 2009

    there might be fault on other boards too, try the logic board

  • Rommel Cana
    Rommel Cana Jul 27, 2009

    hi,

    if the unit is still in warranty period, give a ring on the dealer , or visit the manufacturer web site .


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  • Master
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Normally these boards do not go out easily. Are you getting the blinking yellow light? I would suggest to leave the TV unplugged at least 4 hours or overnight to be sure to clear out or "reset" the tv.

Posted on Jul 17, 2009

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  • Televison & ... Master
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THAT MAY OR MAY NOT BE TRUE, IF THE TUNER WENT OUT THEN YES, IF THE MAIN CIRCUIT BOARD HAS FAILED THEN NO YOU WILL NEED TO EITHER REPLACE THE TV OR REPAIR IT.

Posted on Jul 16, 2009

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cc46e8cd-c98d-439a-bc78-207613c68534.png 76bab8a5-e5dc-4d5d-9d56-589661460254.png

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b95521a.jpg
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